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Dayma P, Choudhary N, Ali D, Alarifi S, Dudhagara P, Luhana K, Yadav VK, Patel A, Patel R. Exploring the Potential of Halotolerant Actinomycetes from Rann of Kutch, India: A Study on the Synthesis, Characterization, and Biomedical Applications of Silver Nanoparticles. Pharmaceuticals (Basel) 2024; 17:743. [PMID: 38931410 DOI: 10.3390/ph17060743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 06/01/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024] Open
Abstract
A tremendous increase in the green synthesis of metallic nanoparticles has been noticed in the last decades, which is due to their unique properties at the nano dimension. The present research work deals with synthesis mediated by the actinomycete Streptomyces tendae of silver nanoparticles (AgNPs), isolated from Little and Greater Rann of Kutch, India. The confirmation of the formation of AgNPs by the actinomycetes was carried out by using a UV-Vis spectrophotometer where an absorbance peak was obtained at 420 nm. The X-ray diffraction pattern demonstrated five characteristic diffraction peaks indexed at the lattice plane (111), (200), (231), (222), and (220). Fourier transform infrared showed typical bands at 531 to 1635, 2111, and 3328 cm-1. Scanning electron microscopy shows that the spherical-shaped AgNPs particles have diameters in the range of 40 to 90 nm. The particle size analysis displayed the mean particle size of AgNPs in aqueous medium, which was about 55 nm (±27 nm), bearing a negative charge on their surfaces. The potential of the S. tendae-mediated synthesized AgNPs was evaluated for their antimicrobial, anti-methicillin-resistant Staphylococcus aureus (MRSA), anti-biofilm, and anti-oxidant activity. The maximum inhibitory effect was observed against Pseudomonas aeruginosa at (8 µg/mL), followed by Escherichia coli and Aspergillus niger at (32 µg/mL), and against Candida albicans (64 µg/mL), whereas Bacillus subtilis (128 µg/mL) and Staphylococcus aureus (256 µg/mL) were much less sensitive to AgNPs. The biosynthesized AgNPs displayed activity against MRSA, and the free radical scavenging activity was observed with an increase in the dosage of AgNPs from 25 to 200 µg/mL. AgNPs in combination with ampicillin displayed inhibition of the development of biofilm in Pseudomonas aeruginosa and Streptococcus pneumoniae at 98% and 83%, respectively. AgNPs were also successfully coated on the surface of cotton to prepare antimicrobial surgical cotton, which demonstrated inhibitory action against Bacillus subtilis (15 mm) and Escherichia coli (12 mm). The present research integrates microbiology, nanotechnology, and biomedical science to formulate environmentally friendly antimicrobial materials using halotolerant actinomycetes, evolving green nanotechnology in the biomedical field. Moreover, this study broadens the understanding of halotolerant actinomycetes and their potential and opens possibilities for formulating new antimicrobial products and therapies.
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Affiliation(s)
- Paras Dayma
- Department of Biosciences, Veer Narmad South Gujarat University, Surat 395007, Gujarat, India
| | - Nisha Choudhary
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan 384265, Gujarat, India
| | - Daoud Ali
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Saud Alarifi
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Pravin Dudhagara
- Department of Biosciences, Veer Narmad South Gujarat University, Surat 395007, Gujarat, India
| | - Kuldeep Luhana
- Department of Biotechnology, Hemchandracharya North Gujarat University, Patan 384265, Gujarat, India
| | - Virendra Kumar Yadav
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Ashish Patel
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Rajesh Patel
- Department of Biosciences, Veer Narmad South Gujarat University, Surat 395007, Gujarat, India
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Noushahi HA, Khan AH, Khan HA, Kiedrzyński M, Akbar A, Shahzad R, Koerniati S, Alrefaei AF, Shu S. Optimizing liquid fermentation for Wolfiporia cocos: gene expression and biosynthesis of pachymic acid and mycelial biomass. Lett Appl Microbiol 2024; 77:ovae054. [PMID: 38866707 DOI: 10.1093/lambio/ovae054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 05/29/2024] [Accepted: 06/11/2024] [Indexed: 06/14/2024]
Abstract
Wolfiporia cocos, a versatile fungus acclaimed for its nutritional and therapeutic benefits in Traditional Chinese Medicine, holds immense potential for pharmaceutical and industrial applications. In this study, we aimed to optimize liquid fermentation techniques and culture medium composition to maximize mycelial biomass (MB) yield, pachymic acid (PA) concentration, and overall PA production. Additionally, we investigated the molecular basis of our findings by quantifying the expression levels of genes associated with PA and MB biosynthesis using quantitative real-time polymerase chain reaction. Under the optimized fermentation conditions, significant results were achieved, with maximum MB reaching 6.68 g l-1, PA content peaking at 1.25 mg g-1, and a total PA yield of 4.76 g l-1. Notably, among the four examined genes, squalene monooxygenase, exhibited enhanced expression at 0.06 ratio under the optimized conditions. Furthermore, within the realm of carbohydrate-active enzymes, the glycoside hydrolases 16 family displayed elevated expression levels at 21 ratios, particularly during MB production. This study enhances understanding of genetic mechanism governing MB and PA production in W. cocos, highlighting the roles of squalene monooxygenase and glycoside hydrolases 16 carbohydrate-active enzymes.
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Affiliation(s)
- Hamza Armghan Noushahi
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Plant Breeding and Phenomic Centre, Faculty of Agricultural Sciences, University of Talca, Talca 3460000, Chile
| | - Aamir Hamid Khan
- Department of Biogeography, Paleoecology and Nature Conservation, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 1/3, 90-237 Lodz, Poland
| | - Hamza Ali Khan
- Plant Breeding and Phenomic Centre, Faculty of Agricultural Sciences, University of Talca, Talca 3460000, Chile
| | - Marcin Kiedrzyński
- Department of Biogeography, Paleoecology and Nature Conservation, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 1/3, 90-237 Lodz, Poland
| | - Adnan Akbar
- Department of Biogeography, Paleoecology and Nature Conservation, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 1/3, 90-237 Lodz, Poland
| | - Raheel Shahzad
- Research Center for Genetics Engineering, National Research and Innovation Agency (BRIN), KST-Cibinong, JI Raya Bogor KM46, Cibinong 16911, Indonesia
| | - Sri Koerniati
- Research Center for Genetics Engineering, National Research and Innovation Agency (BRIN), KST-Cibinong, JI Raya Bogor KM46, Cibinong 16911, Indonesia
| | - Abdulwahed Fahad Alrefaei
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Shaohua Shu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Ebrahimzadeh Kouchesfahani M, Bahrami A, Babaeipour V. Poly-γ-glutamic acid overproduction of Bacillus licheniformis ATCC 9945 a by developing a novel optimum culture medium and glutamate pulse feeding using different experimental design approaches. Biotechnol Appl Biochem 2024; 71:565-583. [PMID: 38246886 DOI: 10.1002/bab.2559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 12/31/2023] [Indexed: 01/23/2024]
Abstract
The commercial production of multifunctional, biocompatible, and biodegradable biopolymers such as poly-γ-glutamic acid via microbial fermentation requires the development of simple and cheap methods for mass production. This study optimized the poly-γ-glutamic acid production of Bacillus licheniformis ATCC 9945a in several steps. At first, the most critical components of the culture medium, including l-glutamic acid, citric acid, and glycerol, were selected by screening nine factors through the Plackett-Burman experimental design and then were optimized using the response surface method and the central composite design algorithm. Under optimal conditions, the production of poly-γ-glutamic acid increased by more than 4.2 times from 11.2 to 47.2 g/L. This is one of the highest production rates of this strain in submerged batch fermentation reported so far using the optimized medium compared to the conventional base medium. A novel and efficient sudden pulse feeding strategy (achieved by a novel one-factorial statistical technique) of l-glutamic acid to the optimized medium increased biopolymer production from 47.2 to 66.1 g/L, the highest value reported in published literature with this strain. This simple, reproducible, and cheap fermentation process can considerably enhance the commercial applications of the poly-γ-glutamic acid synthesized by B. licheniformis ATCC 9945a.
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Affiliation(s)
| | - Ali Bahrami
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran, Iran
| | - Valiollah Babaeipour
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran, Iran
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Khanchezar S, Babaeipour V, Mostafa AS. Overproduction of bacterial cellulose from Acetobacter xylinum BPR2001 using food industries wastes. Biotechnol Appl Biochem 2024; 71:584-595. [PMID: 38233730 DOI: 10.1002/bab.2560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 01/03/2024] [Indexed: 01/19/2024]
Abstract
In this study, a cost-effective complex culture media containing molasses and corn steep liquor (CSL) was developed for the high production of bacterial cellulose (BC) by investigating the effect of four effective factors on BC production at three levels using Taguchi and combined methods. The predicted and actual values of BC production in optimal conditions by Taguchi and combined methods were 8.41 and 14.52 g/L, respectively. These results showed that the combined method was more suitable for predicting the optimal conditions in the optimization of BC production, the cost of developed culture medium was around 94% cost of HS medium preparation, molasses was the most effective factor in both experimental design methods, and initial pH adjustment had little impact on BC production. Then, the effect of inoculation conditions containing three factors of inoculation age, ethanol addition time, and agitation rate on the increase of BC production at three levels was investigated using the response surface methodology with the Box-Behnken design algorithm. Under the optimal conditions including inoculum age of 3 days, ethanol addition time of 10 days, and stirring speed of 100 rpm, the predicted and experimental results of BC production were 21.61 and 20.21 g/L, respectively. This is among the highest ever reported for BC production, which was achieved with a more cost-effective culture medium containing molasses and CSL.
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Affiliation(s)
- Sirwan Khanchezar
- Department of Biotechnology, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
| | - Valiolah Babaeipour
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran, Iran
| | - Atiyeh Sadat Mostafa
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran, Iran
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Min HJ, Payne SJ, Stride EP. Modelling Drug Delivery to the Small Airways: Optimization Using Response Surface Methodology. Pharm Res 2024; 41:1139-1148. [PMID: 38755398 DOI: 10.1007/s11095-024-03706-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Accepted: 04/20/2024] [Indexed: 05/18/2024]
Abstract
AIM The aim of this in silico study was to investigate the effect of particle size, flow rate, and tidal volume on drug targeting to small airways in patients with mild COPD. METHOD Design of Experiments (DoE) was used with an in silico whole lung particle deposition model for bolus administration to investigate whether controlling inhalation can improve drug delivery to the small conducting airways. The range of particle aerodynamic diameters studied was 0.4 - 10 µm for flow rates between 100 - 2000 mL/s (i.e., low to very high), and tidal volumes between 40 - 1500 mL. RESULTS The model accurately predicted the relationship between independent variables and lung deposition, as confirmed by comparison with published experimental data. It was found that large particles (~ 5 µm) require very low flow rate (~ 100 mL/s) and very small tidal volume (~ 110 mL) to target small conducting airways, whereas fine particles (~ 2 µm) achieve drug targeting in the region at a relatively higher flow rate (~ 500 mL/s) and similar tidal volume (~ 110 mL). CONCLUSION The simulation results indicated that controlling tidal volume and flow rate can achieve targeted delivery to the small airways (i.e., > 50% of emitted dose was predicted to deposit in the small airways), and the optimal parameters depend on the particle size. It is hoped that this finding could provide a means of improving drug targeting to the small conducting airways and improve prognosis in COPD management.
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Affiliation(s)
- Hyunhong J Min
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK.
| | - Stephen J Payne
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK
- Institute of Applied Mechanics, National Taiwan University, Taipie, Taiwan
| | - Eleanor P Stride
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK
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Khunnonkwao P, Thitiprasert S, Jaiaue P, Khumrangsee K, Cheirsilp B, Thongchul N. The outlooks and key challenges in renewable biomass feedstock utilization for value-added platform chemical via bioprocesses. Heliyon 2024; 10:e30830. [PMID: 38770303 PMCID: PMC11103475 DOI: 10.1016/j.heliyon.2024.e30830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 05/04/2024] [Accepted: 05/06/2024] [Indexed: 05/22/2024] Open
Abstract
The conversion of renewable biomass feedstock into value-added products via bioprocessing platforms has become attractive because of environmental and health concerns. Process performance and cost competitiveness are major factors in the bioprocess design to produce desirable products from biomass feedstock. Proper pretreatment allows delignification and hemicellulose removal from the liquid fraction, allowing cellulose to be readily hydrolyzed to monomeric sugars. Several industrial products are produced via sugar fermentation using either naturally isolated or genetically modified microbes. Microbial platforms play an important role in the synthesis of several products, including drop-in chemicals, as-in products, and novel compounds. The key elements in developing a fermentation platform are medium formulation, sterilization, and active cells for inoculation. Downstream bioproduct recovery may seem like a straightforward chemical process, but is more complex, wherein cost competitiveness versus recovery performance becomes a challenge. This review summarizes the prospects for utilizing renewable biomass for bioprocessing.
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Affiliation(s)
- Panwana Khunnonkwao
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Sitanan Thitiprasert
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Phetcharat Jaiaue
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Program in Biotechnology, Faculty of Science, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Katsaya Khumrangsee
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
| | - Benjamas Cheirsilp
- Center of Excellence in Innovative Biotechnology for Sustainable Utilization of Bioresources, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Nuttha Thongchul
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
- Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Chulalongkorn University, Phayathai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand
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Basafa M, Hashemi A, Behravan A. Optimizing recombinant antibody fragment production: A comparison of artificial intelligence and statistical modeling. Biotechnol Appl Biochem 2024. [PMID: 38764326 DOI: 10.1002/bab.2600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 05/02/2024] [Indexed: 05/21/2024]
Abstract
Maximizing the recombinant protein yield necessitates optimizing the production medium. This can be done using a variety of methods, including the conventional "one-factor-at-a-time" approach and more recent statistical and mathematical methods such as artificial neural network (ANN), genetic algorithm, etc. Every approach has advantages and disadvantages of its own, yet even when a technique has flaws, it is nevertheless used to get the best results. Here, one categorical variable and four numerical parameters, including post-induction time, inducer concentration, post-induction temperature, and pre-induction cell density, were optimized using the 232 experimental assays of the central composite design. The direct and indirect effects of factors on the yield of anti-epithelial cell adhesion molecule extracellular domain fragment antibody were examined using statistical methods. The analysis of variance results indicate that the response surface methodology (RSM) model is effective in predicting the amount of produced single-chain fragment variable (p-value = 0.0001 and R2 = 0.905). For ANN modeling, the evaluation using normalized root mean square error (NRMSE) and R2 values shows a good fit (R2 = 0.942) and accurate predictions (NRMSE = 0.145). The analysis of error parameters and R2 of a dataset, which contained 30 data points randomly selected from the complete dataset, showed that the ANN model had a higher R2 value (0.968) compared to the RSM model (0.932). Furthermore, the ANN model demonstrated stronger predictive ability with a lower NRMSE (0.048 vs. 0.064). Induction at the cell density of 0.7 and an isopropyl β-D-1-thiogalactopyranoside concentration of 0.6 mM for 32 h at 30°C in BW25113 was the ideal culture condition leading to the protein yield of 259.51 mg/L. Under the optimum conditions, the output values predicted by the ANN model (259.83 mg/L) were more in line with the experimental data (259.51 mg/L) than the RSM (276.13 mg/L) expected value. This outcome demonstrated that the ANN model outperforms the RSM in terms of prediction accuracy.
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Affiliation(s)
- Majid Basafa
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Atieh Hashemi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Aidin Behravan
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Tian Z, Liu L, Wu L, Yang Z, Zhang Y, Du L, Zhang D. Enhancement of vitamin B 6 production driven by omics analysis combined with fermentation optimization. Microb Cell Fact 2024; 23:137. [PMID: 38750497 PMCID: PMC11095007 DOI: 10.1186/s12934-024-02405-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 04/24/2024] [Indexed: 05/19/2024] Open
Abstract
BACKGROUND Microbial engineering aims to enhance the ability of bacteria to produce valuable products, including vitamin B6 for various applications. Numerous microorganisms naturally produce vitamin B6, yet the metabolic pathways involved are rigorously controlled. This regulation by the accumulation of vitamin B6 poses a challenge in constructing an efficient cell factory. RESULTS In this study, we conducted transcriptome and metabolome analyses to investigate the effects of the accumulation of pyridoxine, which is the major commercial form of vitamin B6, on cellular processes in Escherichia coli. Our omics analysis revealed associations between pyridoxine and amino acids, as well as the tricarboxylic acid (TCA) cycle. Based on these findings, we identified potential targets for fermentation optimization, including succinate, amino acids, and the carbon-to-nitrogen (C/N) ratio. Through targeted modifications, we achieved pyridoxine titers of approximately 514 mg/L in shake flasks and 1.95 g/L in fed-batch fermentation. CONCLUSION Our results provide insights into pyridoxine biosynthesis within the cellular metabolic network for the first time. Our comprehensive analysis revealed that the fermentation process resulted in a remarkable final yield of 1.95 g/L pyridoxine, the highest reported yield to date. This work lays a foundation for the green industrial production of vitamin B6 in the future.
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Affiliation(s)
- Zhizhong Tian
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - Linxia Liu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
- Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - Lijuan Wu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - Zixuan Yang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - Yahui Zhang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - Liping Du
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China.
| | - Dawei Zhang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China.
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China.
- Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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Pérez-Fernández BA, Calzadilla L, Enrico Bena C, Del Giudice M, Bosia C, Boggiano T, Mulet R. Sodium acetate increases the productivity of HEK293 cells expressing the ECD-Her1 protein in batch cultures: experimental results and metabolic flux analysis. Front Bioeng Biotechnol 2024; 12:1335898. [PMID: 38659646 PMCID: PMC11039900 DOI: 10.3389/fbioe.2024.1335898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 03/27/2024] [Indexed: 04/26/2024] Open
Abstract
Human Embryonic Kidney cells (HEK293) are a popular host for recombinant protein expression and production in the biotechnological industry. This has driven within both, the scientific and the engineering communities, the search for strategies to increase their protein productivity. The present work is inserted into this search exploring the impact of adding sodium acetate (NaAc) into a batch culture of HEK293 cells. We monitored, as a function of time, the cell density, many external metabolites, and the supernatant concentration of the heterologous extra-cellular domain ECD-Her1 protein, a protein used to produce a candidate prostate cancer vaccine. We observed that by adding different concentrations of NaAc (0, 4, 6 and 8 mM), the production of ECD-Her1 protein increases consistently with increasing concentration, whereas the carrying capacity of the medium decreases. To understand these results we exploited a combination of experimental and computational techniques. Metabolic Flux Analysis (MFA) was used to infer intracellular metabolic fluxes from the concentration of external metabolites. Moreover, we measured independently the extracellular acidification rate and oxygen consumption rate of the cells. Both approaches support the idea that the addition of NaAc to the culture has a significant impact on the metabolism of the HEK293 cells and that, if properly tuned, enhances the productivity of the heterologous ECD-Her1 protein.
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Affiliation(s)
- Bárbara Ariane Pérez-Fernández
- Group of Complex Systems and Statistical Physics, Department of Applied Physics, Physics Faculty, University of Havana, Havana, Cuba
| | | | | | | | - Carla Bosia
- Italian Institute for Genomic Medicine, Candiolo, Italy
- Department of Applied Science and Technology, Politecnico di Torino, Torino, Italy
| | | | - Roberto Mulet
- Group of Complex Systems and Statistical Physics, Department of Theoretical Physics, Physics Faculty, University of Havana, Havana, Cuba
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Abdelgalil SA, Kaddah MMY, Abo-Zaid GA. Eggshell waste bioprocessing for sustainable acid phosphatase production and minimizing environmental hazards. J Biol Eng 2024; 18:26. [PMID: 38589951 PMCID: PMC11003023 DOI: 10.1186/s13036-024-00421-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 03/21/2024] [Indexed: 04/10/2024] Open
Abstract
BACKGROUND The Environmental Protection Agency has listed eggshell waste as the 15th most significant food industry pollution hazard. Using eggshell waste as a renewable energy source has been a hot topic recently. Therefore, finding a sustainable solution for the recycling and valorization of eggshell waste by investigating its potential to produce acid phosphatase (ACP) and organic acids by the newly-discovered B. sonorensis was the target of the current investigation. RESULTS Drawing on both molecular and morphological characterizations, the most potent ACP-producing B. sonorensis strain ACP2, was identified as a local bacterial strain obtained from the effluent of the paper and pulp industries. The use of consecutive statistical experimental approaches of Plackett-Burman Design (PBD) and Orthogonal Central Composite Design (OCCD), followed by pH-uncontrolled cultivation conditions in a 7 L bench-top bioreactor, revealed an innovative medium formulation that substantially improved ACP production, reaching 216 U L-1 with an ACP yield coefficient Yp/x of 18.2 and a specific growth rate (µ) of 0.1 h-1. The metals Ag+, Sn+, and Cr+ were the most efficiently released from eggshells during the solubilization process by B. sonorensis. The uncontrolled pH culture condition is the most suitable and favoured setting for improving ACP and organic acids production. Quantitative and qualitative analyses of the produced organic acids were carried out using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Lactic acid, citric acid, and hydroxybenzoic acid isomer were the most common organic acids produced throughout the cultivation process. The findings of TGA, DSC, SEM, EDS, FTIR, and XRD analysis emphasize the significant influence of organic acids and ACP activity on the solubilization of eggshell particles. CONCLUSIONS This study emphasized robust microbial engineering approaches for the large-scale production of a newly discovered acid phosphatase, accompanied by organic acids production from B. sonorensis. The biovalorization of the eggshell waste and the production of cost-effective ACP and organic acids were integrated into the current study, and this was done through the implementation of a unique and innovative medium formulation design for eggshell waste management, as well as scaling up ACP production on a bench-top scale.
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Affiliation(s)
- Soad Abubakr Abdelgalil
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City for Scientific Research and Technological Applications (SRTA‑City), Universities and Research Institutes Zone, Alexandria, New Borg El‑Arab City, 21934, Egypt.
| | - Mohamed Mohamed Yousri Kaddah
- Pharmaceutical and Fermentation Industries Development Center, City for Scientific Research and Technological Applications (SRTA‑City), Universities and Research Institutes Zone, Alexandria, New Borg El‑Arab City, 21934, Egypt
| | - Gaber Attia Abo-Zaid
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City for Scientific Research and Technological Applications (SRTA‑City), Universities and Research Institutes Zone, Alexandria, New Borg El‑Arab City, 21934, Egypt
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Watanabe K, Chiou TY, Konishi M. Optimization of medium components for protein production by Escherichia coli with a high-throughput pipeline that uses a deep neural network. J Biosci Bioeng 2024; 137:304-312. [PMID: 38296748 DOI: 10.1016/j.jbiosc.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/19/2023] [Accepted: 01/09/2024] [Indexed: 02/02/2024]
Abstract
To optimize rapidly the medium for green fluorescent protein expression by Escherichia coli with an introduced plasmid, pRSET/emGFP, a single-cycle optimization pipeline was applied. The pipeline included a deep neural network (DNN) and mathematical optimization algorithms with simultaneous optimization of 18 medium components. To evaluate the DNN data sampling method, two methods, orthogonal array (OA) and Latin hypercube sampling (LHS), were used to design 64 initial media for each sampling method. The OA- and LHS-based data sampling resulted in green fluorescent protein fluorescence intensities of 0.088 × 103-1.85 × 104 and 3.30 × 103-1.50 × 104, respectively. Fifty DNN models were built using the OA and LHS datasets. Hold-out validation was performed using 15 % test of OA and LHS data. Mean square errors of the DNN models were 0.015-0.64, indicating the estimation accuracies were sufficient. However, the sensitivities of components in the DNN models varied and were grouped into six major classes by the index of k-means clustering. A representative model was selected for each class. Mathematical optimization algorithms using Bayesian optimization and genetic algorithm were applied to the representative models, and representative optimized medium (OM) compositions were selected by k-means clustering from the proposed OMs. A total of 54 OMs were obtained from the OA and LHS datasets. In the validating cultivation, the best OMs of OA and LHS were 2.12-fold and 2.13-fold higher, respectively, than those of the learning data.
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Affiliation(s)
- Kazuki Watanabe
- Department of Biotechnology and Environmental Chemistry, Graduate School of Engineering, Kitami Institute of Technology, 165 Koen-cho Kitami, Hokkaido 090-8507, Japan
| | - Tai-Ying Chiou
- Department of Applied Chemistry, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090-8507, Japan
| | - Masaaki Konishi
- Department of Applied Chemistry, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090-8507, Japan.
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Zanzan M, Ezzaky Y, Achemchem F, Hamadi F, Valero A, Mamouni R. Fermentative optimization and characterization of exopolysaccharides from Enterococcus faecium F58 isolated from traditional fresh goat cheese. Food Sci Biotechnol 2024; 33:1195-1205. [PMID: 38440680 PMCID: PMC10909037 DOI: 10.1007/s10068-023-01424-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/06/2023] [Accepted: 08/23/2023] [Indexed: 03/06/2024] Open
Abstract
This study focused on optimizing the fermentation-based production of Exopolysaccharides (EPS) from Enterococcus faecium F58 initially isolated from traditional Moroccan Jben, a fresh goat cheese. Using the central composite design, yeast extract, MnSO4, and time affect EPS concentration. The highest experimental and predicted EPS production yields were 2.46 g/L ± 0.38 and 2.86 g/L, respectively. Optimal concentrations of yeast extract (4.46 g/L) and MnSO4 (0.011 g/L) were identified after 26 h at 30 °C. Characterization of EPS was conducted using SEM with EDX, XRD, and FTIR analyses. These tests revealed a specific morphology and an amorphous structure. Additionally, thermogravimetric analysis indicated adequate EPS stability up to 200 °C with anti-adhesion properties against different pathogens. This study offers valuable insights into the optimized production of EPS from Enterococcus faecium F58, which exhibits significant structural and functional properties for various applications in the food and biotechnology industries. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-023-01424-9.
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Affiliation(s)
- Mariem Zanzan
- LASIME Research Laboratory, Bioprocess and Environment Team, Agadir Superior School of Technology, Ibn Zohr University, BP 33/S, 80150 Agadir, Morocco
- Laboratory of Microbial Biotechnology and Vegetal Protection, Faculty of Sciences, University Ibn Zohr, BP 32/S, 80000 Agadir, Morocco
| | - Youssef Ezzaky
- LASIME Research Laboratory, Bioprocess and Environment Team, Agadir Superior School of Technology, Ibn Zohr University, BP 33/S, 80150 Agadir, Morocco
| | - Fouad Achemchem
- LASIME Research Laboratory, Bioprocess and Environment Team, Agadir Superior School of Technology, Ibn Zohr University, BP 33/S, 80150 Agadir, Morocco
| | - Fatima Hamadi
- Laboratory of Microbial Biotechnology and Vegetal Protection, Faculty of Sciences, University Ibn Zohr, BP 32/S, 80000 Agadir, Morocco
| | - Antonio Valero
- Department of Food Science and Technology, UIC Zoonosis y Enfermedades Emergentes (ENZOEM), CeiA3, Universidad de Córdoba, Campus Rabanales, 14014 Córdoba, Spain
| | - Rachid Mamouni
- Biotechnology, Materials & Environment Team, Faculty of Sciences, University Ibn Zohr, BP 32/S, 80000 Agadir, Morocco
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Putra IGEP, Ulfah M, Nurhayati N, Helianti I. Coproduction of alkaline protease and xylanase from genetically modified Indonesian local Bacillus halodurans CM1 using corncob as an inducing substrate. Saudi J Biol Sci 2024; 31:103947. [PMID: 38371876 PMCID: PMC10873748 DOI: 10.1016/j.sjbs.2024.103947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 01/29/2024] [Accepted: 02/02/2024] [Indexed: 02/20/2024] Open
Abstract
The production of corn generates a substantial amount of agro-industrial waste, with corncob accounting for a significant portion of this waste. In this study, we focused on utilizing corncob as a carbon source and inducer to simultaneously produce two valuable industrial enzymes, protease, and xylanase, using a recombinant strain of B. halodurans CM1. Interestingly, xylan-rich corncob not only enhanced the xylanase activity but also induced protease activity of the modified B. halodurans CM1 strain. The effect of corncob concentration on the coproduction of protease and xylanase was investigated. Corncob with 6 % concentration induced protease activity of 1020.7 U/mL and xylanase activity of 502.8 U/mL in a 7 L bioreactor under the condition of 1 vvm aeration, 250 rpm agitation, 37 °C temperature, initial pH 9.0, and 40 h incubation period. The protease produced was an alkalothermophilic enzyme whose highest activity was at pH 12 and 50 °C, and it belonged to a serine protease family. This alkalothermophilic protease's activity to some degree was reduced by Co2+, Mg2+, Fe2+, Zn2+, and K+, but enhanced by Ca2+ and Ni2+ (at 5 mM). The protease was stable even under the presence of a 15 % concentration of acetone, DMSO, ethanol, and isopropyl alcohol. The protease activity at 30 °C was not considerably changed by the presence of detergent, indicating excellent potential as a washing detergent additive. According to these findings, corncob has the potential to be a substrate for the coproduction of protease and xylanase, which have a wide range of industrial uses.
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Affiliation(s)
- I Gede Eka Perdana Putra
- Research Center for Applied Microbiology, National Research and Innovation Agency, Republic of Indonesia (BRIN). Jalan Raya Jakarta-Bogor Km. 46, Cibinong, Bogor, Jawa Barat 16911, Indonesia
| | - Maria Ulfah
- Research Center for Genetic Engineering, National Research and Innovation Agency, Republic of Indonesia (BRIN). Jalan Raya Jakarta-Bogor Km. 46, Cibinong, Bogor, Jawa Barat 16911, Indonesia
| | - Niknik Nurhayati
- Research Center for Genetic Engineering, National Research and Innovation Agency, Republic of Indonesia (BRIN). Jalan Raya Jakarta-Bogor Km. 46, Cibinong, Bogor, Jawa Barat 16911, Indonesia
| | - Is Helianti
- Research Center for Genetic Engineering, National Research and Innovation Agency, Republic of Indonesia (BRIN). Jalan Raya Jakarta-Bogor Km. 46, Cibinong, Bogor, Jawa Barat 16911, Indonesia
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Devi M, Ramakrishnan E, Deka S, Parasar DP. Bacteria as a source of biopigments and their potential applications. J Microbiol Methods 2024; 219:106907. [PMID: 38387652 DOI: 10.1016/j.mimet.2024.106907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 02/19/2024] [Accepted: 02/19/2024] [Indexed: 02/24/2024]
Abstract
From the prehistoric period, the utilization of pigments as colouring agents was an integral part of human life. Early people may have utilized paint for aesthetic motives, according to archaeologists. The pigments are either naturally derived or synthesized in the laboratory. Different studies reported that certain synthetic colouring compounds were toxic and had adverse health and environmental effects. Therefore, knowing the drawbacks of these synthetic colouring agents now scientists are attracted towards the harmless natural pigments. The main sources of natural pigments are plants, animals or microorganisms. Out of these natural pigments, microorganisms are the most important source for the production and application of bioactive secondary metabolites. Among all kinds of microorganisms, bacteria have specific benefits due to their short life cycle, low sensitivity to seasonal and climatic variations, ease of scaling, and ability to create pigments of various colours. Based on these physical characteristics, bacterial pigments appear to be a promising sector for novel biotechnological applications, ranging from functional food production to the development of new pharmaceuticals and biomedical therapies. This review summarizes the need for bacterial pigments, biosynthetic pathways of carotenoids and different applications of bacterial pigments.
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Affiliation(s)
- Moitrayee Devi
- Faculty of Paramedical Science (Microbiology), Assam down town University, Sankar Madhab Path, Gandhi Nagar, Panikhaiti, Guwahati, Assam 781026, India
| | - Elancheran Ramakrishnan
- Department of Chemistry, School of Engineering and Technology, Dhanalakshmi Srinivasan University, Tiruchirappalli, Tamil Nadu 621112, India
| | - Suresh Deka
- Faculty of Science, Assam down town University, Sankar Madhab Path, Gandhi Nagar, Panikhaiti, Guwahati, Assam 781026, India
| | - Deep Prakash Parasar
- Faculty of Science (Biotechnology), Assam down town University, Sankar Madhab Path, Gandhi Nagar, Panikhaiti, Guwahati, Assam 781026, India.
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15
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Zhang Y, Feng L, Hemu X, Tan NH, Wang Z. OSMAC Strategy: A promising way to explore microbial cyclic peptides. Eur J Med Chem 2024; 268:116175. [PMID: 38377824 DOI: 10.1016/j.ejmech.2024.116175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 01/12/2024] [Accepted: 01/22/2024] [Indexed: 02/22/2024]
Abstract
Microbial secondary metabolites are pivotal for the development of novel drugs. However, conventional culture techniques, have left a vast array of unexpressed biosynthetic gene clusters (BGCs) in microorganisms, hindering the discovery of metabolites with distinct structural features and diverse biological functions. To address this limitation, several innovative strategies have been emerged. The "One Strain Many Compounds" (OSMAC) strategy, which involves altering microbial culture conditions, has proven to be particularly effective in mining numerous novel secondary metabolites for the past few years. Among these, microbial cyclic peptides stand out. These peptides often comprise rare amino acids, unique chemical structures, and remarkable biological function. With the advancement of the OSMAC strategy, a plethora of new cyclic peptides have been identified from diverse microbial genera. This work reviews the progress in mining novel compounds using the OSMAC strategy and the applications of this strategy in discovering 284 microbial cyclic peptides from 63 endophytic strains, aiming to offer insights for the further explorations into novel active cyclic peptides.
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Affiliation(s)
- Yu Zhang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Li Feng
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Xinya Hemu
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Ning-Hua Tan
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
| | - Zhe Wang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
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16
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Karamchandani BM, Maurya PA, Awale M, Dalvi SG, Banat IM, Satpute SK. Optimization of fungal chitosan production from Cunninghamella echinulata using statistical designs. 3 Biotech 2024; 14:82. [PMID: 38375510 PMCID: PMC10874360 DOI: 10.1007/s13205-024-03919-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 01/01/2024] [Indexed: 02/21/2024] Open
Abstract
Fungal chitosan (FCH) is superior to crustacean chitosan (CH) sources and is of immense interest to the scientific community while having a high demand at the global market. Industrial scale fermentation technologies of FCH production are associated with considerable challenges that frequently restrict their economic production and feasibility. The production of high quality FCH using an underexplored fungal strain Cunninghamella echinulata NCIM 691 that is hoped to mitigate potential future large-scale production was investigated. The one-factor-at-a-time (OFAT) method was implemented to examine the effect of the medium components (i.e. carbon and nitrogen) on the FCH yield. Among these variables, the optimal condition for increased FCH yield was carbon (glucose) and nitrogen (yeast extract) source. A total of 11 factors affected FCH yield among which, the best factors were screened by Plackett-Burman design (PBD). The optimization process was carried out using the response surface methodology (RSM) via Box-Behnken design (BBD). The three-level Box- Behnken factorial design facilitated optimum values for 3 parameters-glucose (2% w/v), yeast extract (1.5% w/v) and magnesium sulphate (0.1% w/v) at 30˚C and pH of 4.5. The optimization resulted in a 2.2-fold higher FCH yield. The produced FCH was confirmed using XRD, 1H NMR, TGA and DSC techniques. The degree of deacetylation (DDA) of the extracted FCH was 88.3%. This optimization process provided a significant improvement of FCH yields and product quality for future potential scale-up processes. This research represents the first report on achieving high FCH yield using a reasonably unfamiliar fungus C. echinulata NCIM 691 through optimised submerged fermentation conditions. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-03919-6.
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Affiliation(s)
- Bhoomika M. Karamchandani
- Department of Microbiology, Savitribai Phule Pune University, Ganeshkhind, Pune, 411007 Maharashtra India
| | - Priya A. Maurya
- Department of Microbiology, Savitribai Phule Pune University, Ganeshkhind, Pune, 411007 Maharashtra India
| | - Manik Awale
- Department of Statistics, Savitribai Phule Pune University, Ganeshkhind, Pune, 411007 Maharashtra India
| | - Sunil G. Dalvi
- Tissue Culture Section, Vasantdada Sugar Institute, Pune, 412307 Maharashtra India
| | - Ibrahim M. Banat
- School of Biomedical Sciences, University of Ulster, Coleraine, Northern Ireland BT52 1SA UK
| | - Surekha K. Satpute
- Department of Microbiology, Savitribai Phule Pune University, Ganeshkhind, Pune, 411007 Maharashtra India
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17
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Ling JYX, Chan YJ, Chen JW, Chong DJS, Tan ALL, Arumugasamy SK, Lau PL. Machine learning methods for the modelling and optimisation of biogas production from anaerobic digestion: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:19085-19104. [PMID: 38376778 DOI: 10.1007/s11356-024-32435-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 02/07/2024] [Indexed: 02/21/2024]
Abstract
Biogas plant operators often face huge challenges in the monitoring, controlling and optimisation of the anaerobic digestion (AD) process, as it is very sensitive to surrounding changes, which often leads to process failure and adversely affects biogas production. Conventional implemented methods and mechanistic models are impractical and find it difficult to model the nonlinear and intricate interactions of the AD process. Thus, the development of machine learning (ML) algorithms has attracted considerable interest in the areas of process optimization, real-time monitoring, perturbation detection and parameter prediction. This paper provides a comprehensive and up-to-date overview of different machine learning algorithms, including artificial neural network (ANN), fuzzy logic (FL), adaptive network-based fuzzy inference system (ANFIS), support vector machine (SVM), genetic algorithm (GA) and particle swarm optimization (PSO) in terms of working mechanism, structure, advantages and disadvantages, as well as their prediction performances in modelling the biogas production. A few recent case studies of their applications and limitations are also critically reviewed and compared, providing useful information and recommendation in the selection and application of different ML algorithms. This review shows that the prediction efficiency of different ML algorithms is greatly impacted by variations in the reactor configurations, operating conditions, influent characteristics, selection of input parameters and network architectures. It is recommended to incorporate mixed liquor volatile suspended solids (MLVSS) concentration of the anaerobic digester (ranging from 16,500 to 46,700 mg/L) as one of the input parameters to improve the prediction efficiency of ML modelling. This review also shows that the combination of different ML algorithms (i.e. hybrid GA-ANN model) could yield better accuracy with higher R2 (0.9986) than conventional algorithms and could improve the optimization model of AD. Besides, future works could be focused on the incorporation of an integrated digital twin system coupled with ML techniques into the existing Supervisory Control and Data Acquisition (SCADA) system of any biogas plant to detect any operational abnormalities and prevent digester upsets.
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Affiliation(s)
- Jordan Yao Xing Ling
- Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Yi Jing Chan
- Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia.
| | - Jia Win Chen
- Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Daniel Jia Sheng Chong
- Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Angelina Lin Li Tan
- Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Senthil Kumar Arumugasamy
- Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Phei Li Lau
- Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia
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18
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Melchor-Moncada JJ, García-Barco A, Zuluaga-Vélez A, Veloza LA, Sepúlveda-Arias JC. Scale-Up of the Fermentation Process for the Production and Purification of Serratiopeptidase Using Silkworm Pupae as a Substrate. Methods Protoc 2024; 7:19. [PMID: 38525777 PMCID: PMC10961818 DOI: 10.3390/mps7020019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 02/16/2024] [Accepted: 02/23/2024] [Indexed: 03/26/2024] Open
Abstract
Serratiopeptidase, a bacterial metalloprotease known for its pain-relieving and anti-inflammatory properties, can be produced through fermentation with S. marcescens. This study aimed to identify key factors related to nutrient composition and physicochemical conditions for production in Erlenmeyer flasks and to scale up the mixture to a bioreactor to obtain the maximum proteolytic activity. A Plackett-Burman design was used to determine whether the presence of silkworm pupae (at 1.5%) was a significant parameter for serratiopeptidase production. Along with the variables pH, temperature, and time, they were optimized using a Taguchi experimental design, resulting in values of 7, 25 °C, and 36 h, respectively. Scaling up with a kLa of 25.45 ± 3.12 h-1 showed the highest serratiopeptidase production at 24 h. A factorial design was used for ultrafiltration, resulting in an LMH (liters per square meter per hour) of 960 L/m2h, a TMP (transmembrane pressure) of 15 psi, and a concentration factor of five, with a specific activity of 24,325.81 ± 1515.69 U/mg. Afterward, the retentate was purified using strong anion exchange chromatography and ultrafiltration, yielding a 19.94 ± 3.07% recovery and a purification factor of 1.59 ± 0.31. In conclusion, waste from the sericulture industry can be used for serratiopeptidase production.
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Affiliation(s)
- Jhon Jairo Melchor-Moncada
- Grupo Infección e Inmunidad, Departamento de Ciencias Básicas, Facultad de Ciencias de la Salud, Universidad Tecnológica de Pereira, Pereira 660003, Colombia; (J.J.M.-M.); (A.G.-B.); (A.Z.-V.)
| | - Alejandra García-Barco
- Grupo Infección e Inmunidad, Departamento de Ciencias Básicas, Facultad de Ciencias de la Salud, Universidad Tecnológica de Pereira, Pereira 660003, Colombia; (J.J.M.-M.); (A.G.-B.); (A.Z.-V.)
| | - Augusto Zuluaga-Vélez
- Grupo Infección e Inmunidad, Departamento de Ciencias Básicas, Facultad de Ciencias de la Salud, Universidad Tecnológica de Pereira, Pereira 660003, Colombia; (J.J.M.-M.); (A.G.-B.); (A.Z.-V.)
| | - Luz Angela Veloza
- Grupo Polifenoles, Facultad de Tecnología, Escuela de Tecnología Química, Universidad Tecnológica de Pereira, Pereira 660003, Colombia;
| | - Juan Carlos Sepúlveda-Arias
- Grupo Infección e Inmunidad, Departamento de Ciencias Básicas, Facultad de Ciencias de la Salud, Universidad Tecnológica de Pereira, Pereira 660003, Colombia; (J.J.M.-M.); (A.G.-B.); (A.Z.-V.)
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19
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Elbanna K, Alsulami FS, Neyaz LA, Abulreesh HH. Poly (γ) glutamic acid: a unique microbial biopolymer with diverse commercial applicability. Front Microbiol 2024; 15:1348411. [PMID: 38414762 PMCID: PMC10897055 DOI: 10.3389/fmicb.2024.1348411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 01/19/2024] [Indexed: 02/29/2024] Open
Abstract
Microbial biopolymers have emerged as promising solutions for environmental pollution-related human health issues. Poly-γ-glutamic acid (γ-PGA), a natural anionic polymeric compound, is composed of highly viscous homo-polyamide of D and L-glutamic acid units. The extracellular water solubility of PGA biopolymer facilitates its complete biodegradation and makes it safe for humans. The unique properties have enabled its applications in healthcare, pharmaceuticals, water treatment, foods, and other domains. It is applied as a thickener, taste-masking agent, stabilizer, texture modifier, moisturizer, bitterness-reducing agent, probiotics cryoprotectant, and protein crystallization agent in food industries. γ-PGA is employed as a biological adhesive, drug carrier, and non-viral vector for safe gene delivery in tissue engineering, pharmaceuticals, and medicine. It is also used as a moisturizer to improve the quality of hair care and skincare cosmetic products. In agriculture, it serves as an ideal stabilizer, environment-friendly fertilizer synergist, plant-growth promoter, metal biosorbent in soil washing, and animal feed additive to reduce body fat and enhance egg-shell strength.
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Affiliation(s)
- Khaled Elbanna
- Department of Biology, Faculty of Science, Umm Al-Qura University, Makkah, Saudi Arabia
- Research Laboratories Unit, Faculty of Science, Umm Al-Qura University, Makkah, Saudi Arabia
- Department of Agricultural Microbiology, Faculty of Agriculture, Fayoum University, Fayoum, Egypt
| | - Fatimah S Alsulami
- Department of Biology, Faculty of Science, Umm Al-Qura University, Makkah, Saudi Arabia
- Research Laboratories Unit, Faculty of Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Leena A Neyaz
- Department of Biology, Faculty of Science, Umm Al-Qura University, Makkah, Saudi Arabia
- Research Laboratories Unit, Faculty of Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Hussein H Abulreesh
- Department of Biology, Faculty of Science, Umm Al-Qura University, Makkah, Saudi Arabia
- Research Laboratories Unit, Faculty of Science, Umm Al-Qura University, Makkah, Saudi Arabia
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20
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Chakraborty M, Shivakumar S. Application of sequential design for enhanced L-asparaginase synthesis from Ganoderma australe GPC191. World J Microbiol Biotechnol 2024; 40:85. [PMID: 38296867 DOI: 10.1007/s11274-023-03881-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 12/26/2023] [Indexed: 02/02/2024]
Abstract
With an increasing demand for L-asparaginase in pharmaceutical and food sectors for its cytostatic and acrylamide-reducing qualities, there's a need to discover novel, highly productive enzyme sources with improved pharmacokinetic profiles. Keeping this in mind, the present study aimed at maximizing the potential of Ganoderma australe GPC191 to produce L-asparaginase by fermentation medium optimization using statistical validation. Of the 11 physicochemical parameters evaluated under submerged fermentation conditions through one-factor-at-a-time approach and Plackett-Burman design, only four parameters (inoculum load, L-asparagine, soybean meal, and initial pH) influenced L-asparaginase production, significantly (p < 0.001). The optimal levels and interaction effects of these on the overall production were further evaluated by the central composite rotatable design of response surface methodology. Post-optimization, 27.34 U/mL was predicted as the maximum activity at pH 7 with 5n inoculum load and 15 g/L each of L-asparagine and soybean meal. Experimental validation yielded an activity of 28.52 U/mL, indicating an overall 18.17-fold increase from the unoptimized stage. To our knowledge, this is the first report signifying the L-asparaginase production aptitude of G. australe with sequential statistical validation using agricultural waste, which can serve as a model to enhance its yields, offering a sustainable and cost-effective solution for industrial application.
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Affiliation(s)
- Meghna Chakraborty
- Department of Microbiology and Botany, School of Sciences, JAIN (Deemed-to-be University), Bangalore, Karnataka, 560027, India
| | - Srividya Shivakumar
- School of Allied Healthcare and Sciences (SAHS), JAIN (Deemed-to-be University), Bangalore, Karnataka, 560066, India.
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Li H, Chen J, Li X, Gan J, Liu H, Jian Z, Xu S, Zhang A, Li G, Chen K. Artificial neural network and genetic algorithm coupled fermentation kinetics to regulate L-lysine fermentation. BIORESOURCE TECHNOLOGY 2024; 393:130151. [PMID: 38049019 DOI: 10.1016/j.biortech.2023.130151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 12/06/2023]
Abstract
Fermentation plays a pivotal role in the industrialization of bioproducts, yet there is a substantial lag in the fermentation process regulation. Here, an artificial neural network (ANN) and genetic algorithm (GA) coupled with fermentation kinetics were employed to establish an innovative lysine fermentation control. Firstly, the strategy of coupling GA with ANN was established. Secondly, specific lysine formation rate (qp), specific substrate consumption rate (qs), and specific cell growth rate (μ) were predicted and optimized by ANN-GA. The optimal ANN model adopts a three-layer feed-forward back-propagation structure (4:10:1). The optimal fermentation control parameters are obtained through GA. Finally, when the carbon to nitrogen ratio, residual sugar concentration, ammonia nitrogen concentration, and dissolved oxygen were [2.5, 4.5], [6.5, 9.5] g·L-1, [1.0, 2.0] g·L-1 and [20, 30] %, respectively, the lysine concentration reaches its peak at 213.0 ± 5.10 g·L-1. The novel control strategy holds significant potential for optimizing the fermentation of other bioproducts.
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Affiliation(s)
- Hui Li
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Jiajun Chen
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Xingyan Li
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Jian Gan
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Huazong Liu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Zhou Jian
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Sheng Xu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Alei Zhang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Ganlu Li
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China.
| | - Kequan Chen
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China.
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Serbent MP, Magario I, Saux C. Immobilizing white-rot fungi laccase: Toward bio-derived supports as a circular economy approach in organochlorine removal. Biotechnol Bioeng 2024; 121:434-455. [PMID: 37990982 DOI: 10.1002/bit.28591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 09/23/2023] [Accepted: 10/28/2023] [Indexed: 11/23/2023]
Abstract
Despite their high persistence in the environment, organochlorines (OC) are widely used in the pharmaceutical industry, in plastics, and in the manufacture of pesticides, among other applications. These compounds and the byproducts of their decomposition deserve attention and efficient proposals for their treatment. Among sustainable alternatives, the use of ligninolytic enzymes (LEs) from fungi stands out, as these molecules can catalyze the transformation of a wide range of pollutants. Among LEs, laccases (Lac) are known for their efficiency as biocatalysts in the conversion of organic pollutants. Their application in biotechnological processes is possible, but the enzymes are often unstable and difficult to recover after use, driving up costs. Immobilization of enzymes on a matrix (support or solid carrier) allows recovery and stabilization of this catalytic capacity. Agricultural residual biomass is a passive environmental asset. Although underestimated and still treated as an undesirable component, residual biomass can be used as a low-cost adsorbent and as a support for the immobilization of enzymes. In this review, the adsorption capacity and immobilization of fungal Lac on supports made from residual biomass, including compounds such as biochar, for the removal of OC compounds are analyzed and compared with the use of synthetic supports. A qualitative and quantitative comparison of the reported results was made. In this context, the use of peanut shells is highlighted in view of the increasing peanut production worldwide. The linkage of methods with circular economy approaches that can be applied in practice is discussed.
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Affiliation(s)
- Maria Pilar Serbent
- Centro de Investigación y Tecnología Química (CITeQ), Facultad Regional Córdoba, Universidad Tecnológica Nacional (CONICET), Córdoba, Argentina
- Programa de Pós-Graduação em Ciências Ambientais (PPGCAMB), Universidade do Estado de Santa Catarina, Lages, Santa Catarina, Brasil
| | - Ivana Magario
- Instituto de Investigación y Desarrollo en Ingeniería de Procesos y Química Aplicada (IPQA), Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba (CONICET), Córdoba, Argentina
| | - Clara Saux
- Centro de Investigación y Tecnología Química (CITeQ), Facultad Regional Córdoba, Universidad Tecnológica Nacional (CONICET), Córdoba, Argentina
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Liu S, Zhang K, Yu Y, Lian X, Jiang L, Meng F, Wang Y, Zhu X, Duan Y. Influence of medium modifications (optimization) on high nematicidal activity of the fermentation broth of Clostridium beijerinckii. Front Bioeng Biotechnol 2024; 11:1283112. [PMID: 38239919 PMCID: PMC10795176 DOI: 10.3389/fbioe.2023.1283112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/28/2023] [Indexed: 01/22/2024] Open
Abstract
Introduction: The nematode species Meloidogyne incognita has been responsible for significant financial losses within the agricultural sector. Nematophagous bacteria, characterised by their extensive distribution and broad spectrum of hosts, exhibit remarkable efficacy as natural antagonists against nematodes. Sneb518 (Clostridium beijerinckii) fermentation broth displayed substantial biocontrol activity against M. incognita in previous research. Optimizing fermentation conditions is a fundamental technique for dramatically enhancing end product performance. There has been no such study conducted yet on enhancing the nematicidal activities of Sneb518 (Clostridium beijerinckii) fermentation using response surface methodology (RSM). Methods: The influence of strain Sneb518 fermentation media and conditions on nematicidal activity was examined using the three-factor technique and a Plackett-Burman design, and the interaction between various fermentation factors was examined using a Box-Behnken design. The present study employed response surface methodology (RSM) to examine and enhance the nematicidal activity of Sneb518 culture filtrates by identifying and optimising the influential components. Results: Glucose, peanut cake flour, and potassium chloride as carbon, nitrogen, and inorganic salts displayed considerably increased nematicidal potential in the present study. Furthermore, the corrected mortality of J2 ranged from 52.24% to 91.15% when utilizing the Box-Behnken design. These findings clearly support the application of RSM for medium optimization. Moreover, the outcomes of the validation experiment corresponded to the model predictions. Discussion: This research has enhanced the biocontrol ability of C. beijerinckii to control M. incognita and this research has led to the advancement of new biocontrol agents.
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Affiliation(s)
- Shuang Liu
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Kejun Zhang
- Tianjin Vocational College of Bioengineering, Tianjin, China
| | - Yun Yu
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Xinglong Lian
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Lanyuwen Jiang
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Fanqi Meng
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
| | - Yuanyuan Wang
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, China
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang, China
| | - Xiaofeng Zhu
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang, China
| | - Yuxi Duan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang, China
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Bensmail S, Boudjema K, Naimi-Fazouane F, Bensmail S, Djouahra-Fahem D, Ferhoum F, Bourfis N. Factors affecting acid protease production by Mucor circinelloides MG603064.1 through SmF process: characterization and fromage frais making. BIOTECHNOLOGIA 2023; 104:333-349. [PMID: 38213480 PMCID: PMC10777721 DOI: 10.5114/bta.2023.132770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 07/30/2023] [Accepted: 09/29/2023] [Indexed: 01/13/2024] Open
Abstract
The exploitation of food industry wastes and their conversion into value-added products present a promising and continuously growing field, given the diversity of elaborated wastes. The current work aimed to utilize sweet cheese whey as a growth medium for acid protease production by a local fungus strain. The biochemical and physicochemical properties of the cheese whey, such as pH, conductivity, chemical oxygen demand, biological oxygen demand (BOD5), total nitrogen and protein contents, and mineral salts, were assessed using various analytical methods. The effect of certain parameters on acid protease production by Mucor circinelloides MG603064.1 through the SmF process was investigated using the conventional design method "One factor at a time". Subsequent to characterization, the crude extract was used in a trial to create fromage frais, compared to the commercial rennin CHY-MAX® Powder Extra. Cheese whey characterization revealed its richness in total nitrogen (1.044 ± 0.044 g/l), protein content (6.52 ± 0.04 g/l), and principal mineral salts: calcium (1.637 ± 0.037 g/l), phosphorus (1.173 ± 0.023 g/l), and chloride (1.66 ± 0.09 g/l). The optimal values of the SmF process for acid protease production, such as the inoculum size, beef extract, and KH2PO4 supplements, the initial pH of cheese whey, and incubation temperature were, respectively, 11% (v/v), 0.4% (w/v), 0.5% (w/v), 5.5, and 30°C. Under these conditions, the lowest milk-clotting time of 290 s was achieved, representing an 18.41-fold increase compared to the initial step using the unoptimized medium. The enzyme showed maximum milk-clotting activity at pH 5, a temperature of 60°C, and in the presence of 0.025 M of CaCl2. The enzyme activity also significantly improved with sonication (35 kHz) for 10 min. The crude extract of M. circinelloides ensured the production of fresh cheese samples with characteristics roughly similar to those obtained by the control (CHY-MAX® rennin). The acid protease of M. circinelloides could successfully substitute the conventional rennin in the manufacture of fresh cheese.
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Affiliation(s)
- Souhila Bensmail
- Department of Biology, Faculty of Nature and Life Sciences and Earth Sciences, Akli Mohand Oulhadj University, Bouira, Algeria
- Research Laboratory of Food Technology, M’hamed Bougara University, Boumerdes, Algeria
| | - Khaled Boudjema
- Research Laboratory of Food Technology, M’hamed Bougara University, Boumerdes, Algeria
| | - Fethia Naimi-Fazouane
- Research Laboratory of Food Technology, M’hamed Bougara University, Boumerdes, Algeria
| | - Samira Bensmail
- Laboratory of Valorization and Conservation of Biological Resources, M’hamed Bougara University, Boumerdes, Algeria
| | - Djamila Djouahra-Fahem
- Department of Biology, Faculty of Nature and Life Sciences and Earth Sciences, Akli Mohand Oulhadj University, Bouira, Algeria
| | - Fatiha Ferhoum
- Department of Agricultural Sciences, Faculty of Nature and Life Sciences and Earth Sciences, Akli Mohand Oulhadj University, Bouira, Algeria
| | - Nassima Bourfis
- Department of Agricultural Sciences, Faculty of Nature and Life Sciences and Earth Sciences, Akli Mohand Oulhadj University, Bouira, Algeria
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Khalid A, Ali S, Rukhma, Jahangeer M, Sarwar A, Nelofer R, Aziz T, Alharbi M, Alasmari AF, Albekairi TH. Immobilization of Aspergillus oryzae tyrosine hydroxylase on ZnO nanocrystals for improved stability and catalytic efficiency towards L-dopa production. Sci Rep 2023; 13:22882. [PMID: 38129644 PMCID: PMC10739923 DOI: 10.1038/s41598-023-50198-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/16/2023] [Indexed: 12/23/2023] Open
Abstract
The current study focuses on the submerged fermentation of tyrosine hydroxylase (TH) from Aspergillus oryzae IIB-9 and its immobilization on zinc oxide nanocrystals (ZnO-NPs) for increased L-dopa production. The volume of Vogel's medium (75 ml), period of incubation (72 h), initial pH (5.5), and size of inoculum (1.5 ml) were optimal for maximum TH activity. The watch glass-dried (WG) and filter paper-dried (FP) ZnO-NPs were prepared and characterized using analytical techniques. The UV-Vis spectra revealed 295 and 285 nm absorption peaks for WG-ZnO-NPs and FP-ZnO-NPs dispersed in isopropanol. X-ray diffraction analysis confirmed the crystalline nature of ZnO-NPs. FTIR spectra band from 740 to 648.1/cm and 735.8/cm to 650.1/cm showed the stretching vibrations of WG-ZnO-NPs and FP-ZnO-NPs, respectively. The particle size of ZnO-NPs observed by scanning electron microscopy (SEM) images was between 130 and 170 nm. Furthermore, the stability of immobilized TH on ZnO-NPs was determined by varying the incubation period (10 min for WG-NPs and 15 min for FP-NPs) and temperature (45 °C and 30 °C for WG and FP-NPs, respectively). Incubating enzymes with various copper, iron, manganese, and zinc salts studied the catalytic efficiency of TH. Immobilization of TH on ZnO-NPs resulted in an 11.05-fold increase in TH activity, thus enhancing stability and catalytic efficiency.
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Affiliation(s)
- Ansa Khalid
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
| | - Sikander Ali
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan.
| | - Rukhma
- Institute of Industrial Biotechnology, Government College University, Lahore, Pakistan
- Food and Biotechnology Research Center, PCSIR Laboratories Complex Ferozpur Road, Lahore, Pakistan
| | - Muhammad Jahangeer
- Food and Biotechnology Research Center, PCSIR Laboratories Complex Ferozpur Road, Lahore, Pakistan
| | - Abid Sarwar
- Food and Biotechnology Research Center, PCSIR Laboratories Complex Ferozpur Road, Lahore, Pakistan
| | - Rubina Nelofer
- Food and Biotechnology Research Center, PCSIR Laboratories Complex Ferozpur Road, Lahore, Pakistan
| | - Tariq Aziz
- Laboratory of Animal Health, Food Hygiene, and Quality, Department of Agriculture, University of Ioannina, 471 32, Arta, Greece.
| | - Metab Alharbi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2455, 11451, Riyadh, Saudi Arabia
| | - Abdullah F Alasmari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2455, 11451, Riyadh, Saudi Arabia
| | - Thamer H Albekairi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2455, 11451, Riyadh, Saudi Arabia
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Semeraro P, Giotta L, Talà A, Tufariello M, D'Elia M, Milano F, Alifano P, Valli L. A simple strategy based on ATR-FTIR difference spectroscopy to monitor substrate intake and metabolite release by growing bacteria. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123031. [PMID: 37392540 DOI: 10.1016/j.saa.2023.123031] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 05/24/2023] [Accepted: 06/14/2023] [Indexed: 07/03/2023]
Abstract
Attenuated total reflectance Fourier transform infrared (ATR-FTIR) difference spectroscopy has been employed for a variety of applications spanning from reaction mechanisms analysis to interface phenomena assessment. This technique is based on the detection of spectral changes induced by the chemical modification of the original sample. In the present study, we highlight the potential of the ATR-FTIR difference approach in the field of microbial biochemistry and biotechnology, reporting on the identification of main soluble species consumed and released by growing bacteria during the biohydrogen production process. Specifically, the mid-infrared spectrum of a model culture broth, composed of glucose, malt extract and yeast extract, was used as background to acquire the FTIR difference spectrum of the same broth as modified by Enterobacter aerogenes metabolism. The analysis of difference signals revealed that only glucose is degraded during hydrogen evolution in anaerobic conditions, while ethanol and 2,3-butanediol are the main soluble metabolites released with H2. This fast and easy analytical approach can therefore represent a sustainable strategy to screen different bacterial strains and to select raw and waste materials to be employed in the field of biofuel production.
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Affiliation(s)
- Paola Semeraro
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali, Università del Salento, Lecce, Italy; Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Unità di Lecce, Lecce, Italy
| | - Livia Giotta
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali, Università del Salento, Lecce, Italy; Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Unità di Lecce, Lecce, Italy.
| | - Adelfia Talà
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali, Università del Salento, Lecce, Italy
| | - Maria Tufariello
- Istituto di Scienze delle Produzioni Alimentari (ISPA), Consiglio Nazionale delle Ricerche (CNR), UOS Lecce, Lecce, Italy
| | - Marcella D'Elia
- Dipartimento di Matematica e Fisica "Ennio De Giorgi", Università del Salento, Lecce, Italy
| | - Francesco Milano
- Istituto di Scienze delle Produzioni Alimentari (ISPA), Consiglio Nazionale delle Ricerche (CNR), UOS Lecce, Lecce, Italy
| | - Pietro Alifano
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali, Università del Salento, Lecce, Italy
| | - Ludovico Valli
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali, Università del Salento, Lecce, Italy; Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Unità di Lecce, Lecce, Italy
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27
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Choi GH, Fugaban JII, Dioso CM, Bucheli JEV, Holzapfel WH, Todorov SD. Antimicrobial Peptides (Bacteriocins) Produced by Lactococcus lactis and Pediococcus pentosaceus Strains with Activity Against Clinical and Food-Borne Pathogens. Probiotics Antimicrob Proteins 2023:10.1007/s12602-023-10188-x. [PMID: 38038837 DOI: 10.1007/s12602-023-10188-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2023] [Indexed: 12/02/2023]
Abstract
Bacteriocins are ribosomal-synthesized peptides with antimicrobial activity, produced by different groups of bacteria, including lactic acid bacteria (LAB). Most of the produced by LAB bacteriocins can be described with rather broad spectra of inhibition and they offer suggested applications in food preservation and pharmaceutical sector. Different LAB were isolated from fermented food products and fruits, obtained from the region of Pohang, Korea, and identified based on physiological, biochemical, and molecular methods. The promising isolates, Pediococcus pentosaceus 732, Lactococcus lactis 808, and Lactococcus lactis subsp. lactis 431, were identified based on biochemical, physiological, and biomolecular approaches, including 16S rRNA partial sequencing, and were evaluated for production of bacteriocin, including stability in presence of enzymes, chemicals, pH, and temperatures. Adherence properties for the expressed bacteriocins by P. pentosaceus 732, Lc. lactis 808, and Lc. lactis subsp. lactis 431 were evaluated at presence of selected chemicals, pH, and temperatures. The presence of bacteriocin genes in the strains was investigated and analyzed. The bacterial effect of bacteriocin produced by studied strains on Listeria spp. and Staphylococcus spp. has been shown for actively growing and stationary cells. Similar growth and bacteriocin production were observed when studied strains were cultured in MRS at 30 °C or 37 °C. The presence of nisin operon with some point mutations on the genomic DNA was recorded based on the performed PCR reactions targeting different genes associated with nisin expression for both lactococcal strains. Pediocin PA-1 operon was evaluated in a similar manner for P. pentosaceus 732.
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Affiliation(s)
- Gee Hyeun Choi
- ProBacLab, Department of Advanced Convergence, Handong Global University, 37554, Pohang, Gyeongbuk, Republic of Korea
| | - Joanna Ivy Irorita Fugaban
- ProBacLab, Department of Advanced Convergence, Handong Global University, 37554, Pohang, Gyeongbuk, Republic of Korea
- National Food Institute, Technical University of Denmark, Kemitorvet, DK-2800, Kgs. Lyngby, Denmark
| | - Clarizza May Dioso
- HEM Laboratory, Department of Advanced Convergence, Handong Global University, 37554, Pohang, Gyeongbuk, Republic of Korea
- Department of Molecular Biotechnology, Environmental Technology and Food Technology, Ghent University Global Campus, 119, Songdomunhawa-Ro, Yeonsu-Gu, Incheon, 21985, South Korea
| | - Jorge Enrique Vazquez Bucheli
- ProBacLab, Department of Advanced Convergence, Handong Global University, 37554, Pohang, Gyeongbuk, Republic of Korea
- HEM Laboratory, Department of Advanced Convergence, Handong Global University, 37554, Pohang, Gyeongbuk, Republic of Korea
| | - Wilhelm Heinrich Holzapfel
- HEM Laboratory, Department of Advanced Convergence, Handong Global University, 37554, Pohang, Gyeongbuk, Republic of Korea
| | - Svetoslav Dimitrov Todorov
- ProBacLab, Department of Advanced Convergence, Handong Global University, 37554, Pohang, Gyeongbuk, Republic of Korea.
- ProBacLab, Laboratório de Microbiologia de Alimentos, Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
- CISAS-Center for Research and Development in Agrifood Systems and Sustainability, Instituto Politécnico de Viana Do Castelo, 4900-347, Viana Do Castelo, Portugal.
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Zhong Y, Zheng W, Shi X, Guo Y, Wang Q, Lv P, Chen J. Pilot-Scale Fermentation of Pseudoalteromonas sp. Strain FDHY-MZ2: An Effective Strategy for Increasing Algicidal Activity. BIOLOGY 2023; 12:1447. [PMID: 37998046 PMCID: PMC10669318 DOI: 10.3390/biology12111447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023]
Abstract
The role of microorganisms in effectively terminating harmful algal blooms (HABs) is crucial for maintaining environmental stability. Recent studies have placed increased emphasis on bio-agents capable of inhibiting HABs. The bacterium Pseudoalteromonas sp. strain FDHY-MZ2 has exhibited impressive algicidal abilities against Karenia mikimotoi, a notorious global HAB-forming species. To augment this capability, cultures were progressively scaled from shake flask conditions to small-scale (5 L) and pilot-scale (50 L) fermentation. By employing a specifically tailored culture medium (2216E basal medium with 1.5% soluble starch and 0.5% peptone), under precise conditions (66 h, 20 °C, 450 rpm, 30 L/min ventilation, 3% seeding, and constant starch flow), a notable increase in algicidal bacterial biomass was observed; the bacterial dosage required to entirely wipe out K. mikimotoi within a day decreased from 1% to 0.025%. Compared to an unoptimized shake flask group, the optimized fermentation culture caused significant reductions in algal chlorophyll and protein levels (21.85% and 78.3%, respectively). Co-culturing induced increases in algal malondialdehyde and H2O2 by 5.98 and 5.38 times, respectively, leading to further disruption of algal photosynthesis. This study underscores the unexplored potential of systematically utilized microbial agents in mitigating HABs, providing a pathway for their wider application.
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Affiliation(s)
- Yuying Zhong
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
- College of Advanced Manufacturing, Fuzhou University, Jinjiang 362200, China
| | - Wenhuang Zheng
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
| | - Xinguo Shi
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
| | - Yisong Guo
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
| | - Qianqian Wang
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
- College of Advanced Manufacturing, Fuzhou University, Jinjiang 362200, China
| | - Pin Lv
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
- College of Advanced Manufacturing, Fuzhou University, Jinjiang 362200, China
| | - Jianfeng Chen
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
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Qin J, Kurt E, LBassi T, Sa L, Xie D. Biotechnological production of omega-3 fatty acids: current status and future perspectives. Front Microbiol 2023; 14:1280296. [PMID: 38029217 PMCID: PMC10662050 DOI: 10.3389/fmicb.2023.1280296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 10/25/2023] [Indexed: 12/01/2023] Open
Abstract
Omega-3 fatty acids, including alpha-linolenic acids (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), have shown major health benefits, but the human body's inability to synthesize them has led to the necessity of dietary intake of the products. The omega-3 fatty acid market has grown significantly, with a global market from an estimated USD 2.10 billion in 2020 to a predicted nearly USD 3.61 billion in 2028. However, obtaining a sufficient supply of high-quality and stable omega-3 fatty acids can be challenging. Currently, fish oil serves as the primary source of omega-3 fatty acids in the market, but it has several drawbacks, including high cost, inconsistent product quality, and major uncertainties in its sustainability and ecological impact. Other significant sources of omega-3 fatty acids include plants and microalgae fermentation, but they face similar challenges in reducing manufacturing costs and improving product quality and sustainability. With the advances in synthetic biology, biotechnological production of omega-3 fatty acids via engineered microbial cell factories still offers the best solution to provide a more stable, sustainable, and affordable source of omega-3 fatty acids by overcoming the major issues associated with conventional sources. This review summarizes the current status, key challenges, and future perspectives for the biotechnological production of major omega-3 fatty acids.
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Affiliation(s)
| | | | | | | | - Dongming Xie
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, MA, United States
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Mazucato VDS, Vieira PC. Exploring the chemical diversity of phytopathogenic fungi infecting edible fruits. Nat Prod Res 2023; 37:3947-3955. [PMID: 36597649 DOI: 10.1080/14786419.2022.2163482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 12/07/2022] [Accepted: 12/19/2022] [Indexed: 01/05/2023]
Abstract
Two fungi, Fusarium guttiforme and Colletotrichum horii, were cultured under different conditions to obtain fourteen compounds. The axenic cultures of F. guttiforme and C. horii in potato dextrose broth (PDB) medium yielded fusaric acid (1), 9,10-dehydrofusaric acid (2), and tyrosol, whereas their co-cultivation produced fusarinol (5), a fusaric acid complex with magnesium (3), 9,10-dehydrofusaric acid complex with magnesium (4), and 5-butyl-5-(hydroxymethyl) dihydrofuranone (9). Upon changing the medium from PDB to Czapek, different compounds (uracil, p-hydroxy acetophenone, and cyclo(L-Leu-L-Pro) were obtained. Fusaric acid (1) was biotransformed into fusarinol (5) by C. horii, suggesting a detoxification process, and three other compounds were obtained: 7-hydroxyfusarinol (7), 9,10-dehydrofusarinol (6), and fusarinyl acetate (8). Epigenetic modulation of suberohydroxamic acid against F. guttiforme afforded gibepyrone B (10). These compounds were subjected to a papain inhibition enzymatic assay; the highest inhibitory activity was displayed by the two magnesium complexes, at 56 and 54% inhibition, respectively.
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Affiliation(s)
- Vitor de S Mazucato
- Departament of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Paulo C Vieira
- Departament of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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Zhu CY, Zhao XY, Lyu ZY, Gao WL, Zhao QW, Chen XA, Li YQ. Daptomycin production enhancement by ARTP mutagenesis and fermentation optimization in Streptomyces roseosporus. J Appl Microbiol 2023; 134:lxad230. [PMID: 37873659 DOI: 10.1093/jambio/lxad230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 09/23/2023] [Accepted: 10/19/2023] [Indexed: 10/25/2023]
Abstract
AIMS We evaluated whether the randomness of mutation breeding can be regulated through a double-reporter system. We hope that by establishing a new precursor feeding strategy, the production capacity of industrial microorganisms after pilot scale-up can be further improved. METHODS AND RESULTS In this study, the industrial strain Streptomyces roseosporus L2796 was used as the starter strain for daptomycin production, and a double-reporter system with the kanamycin resistance gene Neo and the chromogenic gene gusA was constructed to screen for high-yield strain L2201 through atmospheric and room temperature plasma (ARTP). Furthermore, the composition of the culture medium and the parameters of precursor replenishment were optimized, resulting in a significant enhancement of the daptomycin yield of the mutant strain L2201(752.67 mg/l). CONCLUSIONS This study successfully screened a high-yield strain of daptomycin through a double-reporter system combined with ARTP mutation. The expression level of two reporter genes can evaluate the strength of dptEp promoter, which can stimulate the expression level of dptE in the biosynthesis of daptomycin, thus producing more daptomycin. The developed multi-stage feeding rate strategy provides a novel way to increase daptomycin in industrial fermentation.
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Affiliation(s)
- Chen-Yang Zhu
- First Affiliated Hospital and Institute of Pharmaceutical Biotechnology, Zhejiang University School of Medicine, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Xin-Yi Zhao
- First Affiliated Hospital and Institute of Pharmaceutical Biotechnology, Zhejiang University School of Medicine, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Zhong-Yuan Lyu
- First Affiliated Hospital and Institute of Pharmaceutical Biotechnology, Zhejiang University School of Medicine, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Wen-Li Gao
- First Affiliated Hospital and Institute of Pharmaceutical Biotechnology, Zhejiang University School of Medicine, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Qing-Wei Zhao
- First Affiliated Hospital and Institute of Pharmaceutical Biotechnology, Zhejiang University School of Medicine, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Xin-Ai Chen
- First Affiliated Hospital and Institute of Pharmaceutical Biotechnology, Zhejiang University School of Medicine, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Yong-Quan Li
- First Affiliated Hospital and Institute of Pharmaceutical Biotechnology, Zhejiang University School of Medicine, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
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Cheng T, Ge T, Zhao L, Hou Y, Xia J, Zhao L. Improved production of andrimid in Erwinia persicina BST187 strain by fermentation optimization. BMC Microbiol 2023; 23:268. [PMID: 37749510 PMCID: PMC10519088 DOI: 10.1186/s12866-023-02946-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 07/14/2023] [Indexed: 09/27/2023] Open
Abstract
BACKGROUND Andrimid is reported to be a novel kind of polyketide-nonribosomal peptide hybrid product (PK-NRPs) that inhibits fatty acid biosynthesis in bacteria. Considering its great potential in biomedicine and biofarming, intensive studies have been conducted to increase the production of andrimid to overcome the excessive costs of chemosynthesis. In screening for species with broad-spectrum antibacterial activity, we detected andrimid in the fermentation products of Erwinia persicina BST187. To increase andrimid production, the BST187 fermentation medium formulation and fermentation conditions were optimized by using systematic design of experiments (One-Factor-At-A-Time, Plackett-Burman design, Response Surface Methodology). RESULTS The results indicate that the actual andrimid production reached 140.3 ± 1.28 mg/L under the optimized conditions (trisodium citrate dihydrate-30 g/L, beef extract-17.1 g/L, MgCl2·6H2O-100 mM, inoculation amount-1%, initial pH-7.0, fermentation time-36 h, temperature-19.7℃), which is 20-fold greater than the initial condition without optimization (7.00 ± 0.40 mg/L), consistent with the improved antibacterial effect of the fermentation supernatant. CONCLUSIONS The present study provides valuable information for improving andrimid production via optimization of the fermentation process, which will be of great value in the future industrialization of andrimid production.
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Affiliation(s)
- Tingfeng Cheng
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Tongling Ge
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Lunqiang Zhao
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China
- College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yuyong Hou
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Jianye Xia
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China.
- National Center of Technology Innovation for Synthetic Biology, Tianjin, China.
| | - Lei Zhao
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China.
- National Center of Technology Innovation for Synthetic Biology, Tianjin, China.
- College of Biological Sciences, China Agricultural University, Beijing, China.
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Kizilay HK, Küçükçetin A, Demir M. Optimization of carotenoid production by Umbelopsis ramanniana. Biotechnol Prog 2023; 39:e3369. [PMID: 37343233 DOI: 10.1002/btpr.3369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/09/2023] [Accepted: 05/14/2023] [Indexed: 06/23/2023]
Abstract
Umbelopsis ramanniana was investigated to increase carotenoid production. Nine different carbon sources and six different nitrogen sources were evaluated for the maximum carotenoid production. The most effective nitrogen and carbon sources were KNO3 and lactose, respectively. Then, the optimization of medium components for enhancement of carotenoid production by Umbelopsis ramanniana was achieved using Plackett-Burman design. Box-Behnken response surface methodology was applied to further optimize carotenoid and biomass production. Carbon to nitrogen ratio, lactose concentration, and shaking speed were studied as variables in Box-Behnken design. The optimum conditions for carotenoid and biomass production were determined as 32.42 g/L of lactose concentration, 20:1 of carbon to nitrogen ratio, and shaking speed of 130 rpm. The maximum carotenoid and biomass production under optimized conditions were 1141 μg/L (β-carotene-Eq) and 13.14 g/L, respectively. When compared to the control fermentation, carotenoid, and biomass production were increased by about 2 and 1.3 folds, respectively.
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Affiliation(s)
- Hatice Kübra Kizilay
- Faculty of Engineering, Department of Food Engineering, Akdeniz University, Antalya, Turkey
| | - Ahmet Küçükçetin
- Faculty of Engineering, Department of Food Engineering, Akdeniz University, Antalya, Turkey
| | - Muammer Demir
- Faculty of Engineering, Department of Food Engineering, Akdeniz University, Antalya, Turkey
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Puan SL, Erriah P, Baharudin MMAA, Yahaya NM, Kamil WNIWA, Ali MSM, Ahmad SA, Oslan SN, Lim S, Sabri S. Antimicrobial peptides from Bacillus spp. and strategies to enhance their yield. Appl Microbiol Biotechnol 2023; 107:5569-5593. [PMID: 37450018 DOI: 10.1007/s00253-023-12651-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 07/18/2023]
Abstract
Antibiotic resistance is a growing concern that is affecting public health globally. The search for alternative antimicrobial agents has become increasingly important. Antimicrobial peptides (AMPs) produced by Bacillus spp. have emerged as a promising alternative to antibiotics, due to their broad-spectrum antimicrobial activity against resistant pathogens. In this review, we provide an overview of Bacillus-derived AMPs, including their classification into ribosomal (bacteriocins) and non-ribosomal peptides (lipopeptides and polyketides). Additionally, we delve into the molecular mechanisms of AMP production and describe the key biosynthetic gene clusters involved. Despite their potential, the low yield of AMPs produced under normal laboratory conditions remains a challenge to large-scale production. This review thus concludes with a comprehensive summary of recent studies aimed at enhancing the productivity of Bacillus-derived AMPs. In addition to medium optimization and genetic manipulation, various molecular strategies have been explored to increase the production of recombinant antimicrobial peptides (AMPs). These include the selection of appropriate expression systems, the engineering of expression promoters, and metabolic engineering. Bacillus-derived AMPs offer great potential as alternative antimicrobial agents, and this review provides valuable insights on the strategies to enhance their production yield, which may have significant implications for combating antibiotic resistance. KEY POINTS: • Bacillus-derived AMP is a potential alternative therapy for resistant pathogens • Bacillus produces two main classes of AMPs: ribosomal and non-ribosomal peptides • AMP yield can be enhanced using culture optimization and molecular approaches.
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Affiliation(s)
- Sheau Ling Puan
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Pirasannah Erriah
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Mohamad Malik Al-Adil Baharudin
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Normi Mohd Yahaya
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Wan Nur Ismah Wan Ahmad Kamil
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Mohd Shukuri Mohamad Ali
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Siti Aqlima Ahmad
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Siti Nurbaya Oslan
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia
| | - Sooa Lim
- Department of Pharmaceutical Engineering, Hoseo University, 31499, Asan-Si, Chungnam, Republic of Korea
| | - Suriana Sabri
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia.
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400, Serdang, Selangor, Malaysia.
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Ugwuoji ET, Nwagu TNT, Ezeogu LI. Detergent-stable amylase production by Paenibacillus lactis strain OPSA3 isolated from soil; optimization by response surface methodology. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2023; 39:e00808. [PMID: 37528864 PMCID: PMC10388169 DOI: 10.1016/j.btre.2023.e00808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/13/2023] [Accepted: 07/16/2023] [Indexed: 08/03/2023]
Abstract
This study aimed to isolate thermostable, alkaliphilic, and detergent-tolerant amylase-producing bacteria. Pure isolates from environmental samples were screened on a starch-based medium (pH 11), and selected isolates were identified using cultural and molecular techniques. Product optimization studies were conducted, and secreted amylase was partially purified using 40% (w/v) saturation ammonium sulfate at 4 °C. The wash performance of concentrated amylase was analyzed. A novel isolate, Paenibacillus lactis OPSA3, was selected for further studies. The isolate produced amylase optimally when grown on banana peels and soybean extracts, which are agro-wastes. Optimization by Response surface Methodology resulted in a 2.1-fold increase in alkaliphilic amylase production. A 2.46-fold purification was achieved, with an enzyme activity yield of 79.53% and specific activity of 26.19 Umg-1. Wash performance analysis using the amylase supplemented with boiled commercial detergent (kiln®) showed good cleaning efficiency. The amylase has the potential for application as a component of green detergent.
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Affiliation(s)
- Emmanuel Tobechukwu Ugwuoji
- Department of Applied Microbiology and Brewing, Faculty of Biosciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria
- Department of Microbiology, Faculty of Biological Sciences, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Tochukwu Nwamaka T. Nwagu
- Department of Microbiology, Faculty of Biological Sciences, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Lewis Iheanacho Ezeogu
- Department of Microbiology, Faculty of Biological Sciences, University of Nigeria, Nsukka, Enugu State, Nigeria
- UNESCO International Centre for Biotechnology, Nsukka, Nigeria
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Torreggiani A, Demarinis C, Pinto D, Papale A, Difonzo G, Caponio F, Pontonio E, Verni M, Rizzello CG. Up-Cycling Grape Pomace through Sourdough Fermentation: Characterization of Phenolic Compounds, Antioxidant Activity, and Anti-Inflammatory Potential. Antioxidants (Basel) 2023; 12:1521. [PMID: 37627516 PMCID: PMC10451973 DOI: 10.3390/antiox12081521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/27/2023] Open
Abstract
Despite its appealing composition, because it is rich in fibers and polyphenols, grape pomace, the major by-product of the wine industry, is still discarded or used for feed. This study aimed at exploiting grape pomace functional potential through fermentation with lactic acid bacteria (LAB). A systematic approach, including the progressively optimization of the grape pomace substrate, was used, evaluating pomace percentage, pH, and supplementation of nitrogen and carbon sources. When grape pomace was used at 10%, especially without pH correction, LAB cell viability decreased up to 2 log cycles. Hence, the percentage was lowered to 5 or 2.5% and supplementations with carbon and nitrogen sources, which are crucial for LAB metabolism, were considered aiming at obtaining a proper fermentation of the substrate. The optimization of the substrate enabled the comparison of strains performances and allowed the selection of the best performing strain (Lactiplantibacillus plantarum T0A10). A sourdough, containing 5% of grape pomace and fermented with the selected strain, showed high antioxidant activity on DPPH and ABTS radicals and anti-inflammatory potential on Caco2 cells. The anthocyanins profile of the grape pomace sourdough was also characterized, showing qualitative and quantitative differences before and after fermentation. Overall, the grape pomace sourdough showed promising applications as a functional ingredient in bread making.
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Affiliation(s)
- Andrea Torreggiani
- Department of Environmental Biology, “Sapienza” University of Rome, 00185 Rome, Italy; (A.T.); (C.G.R.)
| | - Chiara Demarinis
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, 70126 Bari, Italy; (C.D.); (G.D.); (F.C.); (E.P.)
| | - Daniela Pinto
- Human Microbiome Advanced Project, 20129 Milan, Italy; (D.P.); (A.P.)
| | - Angela Papale
- Human Microbiome Advanced Project, 20129 Milan, Italy; (D.P.); (A.P.)
| | - Graziana Difonzo
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, 70126 Bari, Italy; (C.D.); (G.D.); (F.C.); (E.P.)
| | - Francesco Caponio
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, 70126 Bari, Italy; (C.D.); (G.D.); (F.C.); (E.P.)
| | - Erica Pontonio
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, 70126 Bari, Italy; (C.D.); (G.D.); (F.C.); (E.P.)
| | - Michela Verni
- Department of Environmental Biology, “Sapienza” University of Rome, 00185 Rome, Italy; (A.T.); (C.G.R.)
| | - Carlo Giuseppe Rizzello
- Department of Environmental Biology, “Sapienza” University of Rome, 00185 Rome, Italy; (A.T.); (C.G.R.)
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Goldmanns J, Röhling GA, Lipa MK, Scholand T, Deitert A, May T, Haas EP, Boy M, Herold A, Büchs J. Development of a chemically defined medium for Paenibacillus polymyxa by parallel online monitoring of the respiration activity in microtiter plates. BMC Biotechnol 2023; 23:25. [PMID: 37507713 PMCID: PMC10385886 DOI: 10.1186/s12896-023-00793-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND One critical parameter in microbial cultivations is the composition of the cultivation medium. Nowadays, the application of chemically defined media increases, due to a more defined and reproducible fermentation performance than in complex media. In order, to improve cost-effectiveness of fermentation processes using chemically defined media, the media should not contain nutrients in large excess. Additionally, to obtain high product yields, the nutrient concentrations should not be limiting. Therefore, efficient medium optimization techniques are required which adapt medium compositions to the specific nutrient requirements of microorganisms. RESULTS Since most Paenibacillus cultivation protocols so far described in literature are based on complex ingredients, in this study, a chemically defined medium for an industrially relevant Paenibacillus polymyxa strain was developed. A recently reported method, which combines a systematic experimental procedure in combination with online monitoring of the respiration activity, was applied and extended to identify growth limitations for Paenibacillus polymyxa. All cultivations were performed in microtiter plates. By systematically increasing the concentrations of different nutrient groups, nicotinic acid was identified as a growth-limiting component. Additionally, an insufficient buffer capacity was observed. After optimizing the growth in the chemically defined medium, the medium components were systematically reduced to contain only nutrients relevant for growth. Vitamins were reduced to nicotinic acid and biotin, and amino acids to methionine, histidine, proline, arginine, and glutamate. Nucleobases/-sides could be completely left out of the medium. Finally, the cultivation in the reduced medium was reproduced in a laboratory fermenter. CONCLUSION In this study, a reliable and time-efficient high-throughput methodology was extended to investigate limitations in chemically defined media. The interpretation of online measured respiration activities agreed well with the growth performance of samples measured in parallel via offline analyses. Furthermore, the cultivation in microtiter plates was validated in a laboratory fermenter. The results underline the benefits of online monitoring of the respiration activity already in the early stages of process development, to avoid limitations of medium components, oxygen limitation and pH inhibition during the scale-up.
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Affiliation(s)
- Jennifer Goldmanns
- RWTH Aachen University, AVT - Biochemical Engineering, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Georg Andreas Röhling
- RWTH Aachen University, AVT - Biochemical Engineering, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Marie Kristine Lipa
- RWTH Aachen University, AVT - Biochemical Engineering, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Theresa Scholand
- RWTH Aachen University, AVT - Biochemical Engineering, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Alexander Deitert
- RWTH Aachen University, AVT - Biochemical Engineering, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Tobias May
- BASF SE, Carl-Bosch-Straße 38, Ludwigshafen am Rhein, 67056, Germany
| | | | - Matthias Boy
- BASF SE, Carl-Bosch-Straße 38, Ludwigshafen am Rhein, 67056, Germany
| | - Andrea Herold
- BASF SE, Carl-Bosch-Straße 38, Ludwigshafen am Rhein, 67056, Germany
| | - Jochen Büchs
- RWTH Aachen University, AVT - Biochemical Engineering, Forckenbeckstraße 51, 52074, Aachen, Germany.
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Parashiva J, Nuthan BR, Rakshith D, Satish S. Endophytic Fungi as a Promising Source of Anticancer L-Asparaginase: A Review. Curr Microbiol 2023; 80:282. [PMID: 37450223 DOI: 10.1007/s00284-023-03392-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 06/29/2023] [Indexed: 07/18/2023]
Abstract
L-asparaginase is a tetrameric enzyme from the amidohydrolases family, that catalyzes the breakdown of L-asparagine into L-aspartic acid and ammonia. Since its discovery as an anticancer drug, it is used as one of the prime chemotherapeutic agents to treat acute lymphoblastic leukemia. Apart from its use in the biopharmaceutical industry, it is also used to reduce the formation of a carcinogenic substance called acrylamide in fried, baked, and roasted foods. L-asparaginase is derived from many organisms including plants, bacteria, fungi, and actinomycetes. Currently, L-asparaginase preparations from Escherichia coli and Erwinia chrysanthemi are used in the clinical treatment of acute lymphoblastic leukemia. However, they are associated with low yield and immunogenicity problems. At this juncture, endophytic fungi from medicinal plants have gained much attention as they have several advantages over the available bacterial preparations. Many medicinal plants have been screened for L-asparaginase producing endophytic fungi and several studies have reported potent L-asparaginase producing strains. This review provides insights into fungal endophytes from medicinal plants and their significance as probable alternatives for bacterial L-asparaginase.
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Affiliation(s)
- Javaraiah Parashiva
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 006, India
| | | | - Devaraju Rakshith
- Department of Microbiology, Yuvaraja's College, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 005, India
| | - Sreedharamurthy Satish
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 006, India.
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Parashiva J, Nuthan BR, Bharatha M, Praveen R, Tejashwini P, Satish S. Response surface methodology based optimized production, purification, and characterization of L-asparaginase from Fusarium foetens. World J Microbiol Biotechnol 2023; 39:252. [PMID: 37442849 DOI: 10.1007/s11274-023-03684-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023]
Abstract
L-asparaginase is used as one of the prime chemotherapeutic agents to treat acute lymphoblastic leukemia. L-asparaginase obtained from bacteria exhibits hypersensitive reactions including various side effects. The present work aimed to optimize growth parameters for maximum production of L-asparaginase by Fusarium foetens through response surface methodology, its purification, and characterization. The optimization of L-asparaginase production by Fusarium foetens was initially done through a one-factor-at-a-time method. L-asparaginase production was further optimized using a central composite design based response surface methodology. The maximum L-asparaginase activity of 12.83 IU/ml was obtained under the following growth conditions; temperature-27.5 °C, pH-8, inoculum concentration-1.5 × 106 spores/ml, and incubation period-7 days. In comparison with the unoptimized growth conditions (4.58 IU/ml), the optimization led to a 2.65-fold increase in the L-asparaginase activity. The L-asparaginase from Fusarium foetens was purified 15.60-fold, with a yield of 39.89% using DEAE-cellulose column chromatography. After purification, the L-asparaginase activity was determined to be 127.26 IU/ml and the specific activity was found to be 231.38 IU/mg. The molecular mass was estimated to be approximately 37 kDa by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The purified enzyme showed optimum activity at pH 5, and a temperature of 40 °C. The enzyme showed 100% specificity towards L-asparagine and no activity towards L-glutamine. Its activity was enhanced by Mn2+, Fe2+, and Mg2, while it was inhibited by β-mercaptoethanol and EDTA. The Km and Vmax of the purified L-asparaginase were found to be 23.82 mM and 210.3 IU/ml respectively. The results suggest that Fusarium foetens could be a potent candidate for the bioprocessing of L-asparaginase at a large scale.
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Affiliation(s)
- Javaraiah Parashiva
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 006, India
| | | | - Madeva Bharatha
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 005, India
| | - Raju Praveen
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 005, India
| | - Purushotham Tejashwini
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 006, India
| | - Sreedharamurthy Satish
- Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysuru, Karnataka, 570 006, India.
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Arpana M, Rathore SS, Rao AS, Nair A, More SS, Fasim A. Statistical bioprocess optimization for enhanced production of a thermo alkalophilic polygalacturonase (PGase) from Pseudomonas sp. 13156349 using solid substrate fermentation (SSF). Heliyon 2023; 9:e16493. [PMID: 37251455 PMCID: PMC10220361 DOI: 10.1016/j.heliyon.2023.e16493] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/16/2023] [Accepted: 05/18/2023] [Indexed: 05/31/2023] Open
Abstract
In this study, a polygalacturonase (PGase) producing bacterial strain was isolated and identified as Pseudomonas sp. 13159349 from fruit market soils, and TLC analysis confirmed its pectinolytic activity. Additionally, SSF, Plackett-Burman design (PB), and response surface methodology (RSM) were used to optimize the production of this thermostable and alkalophilic PGase. Wheat bran demonstrated the highest activity (60.13 ± 3.39 U/gm) among the various agricultural wastes used as solid substrates. To further enhance the enzyme production, statistical optimization of media components was investigated using the PB design. Among the 11 variables tested, pH (p < 0.0001), inoculum size (p < 0.0001), incubation time (p < 0.0001), and temperature (p < 0.0041) were found to have a positive effect on the production. The interaction and concentration of the selected factors were examined by RSM, which demonstrated the optimal conditions for maximum production (315.65 U/gm) of the enzyme using wheat bran as the solid substrate were pH 10.5, 61-66 h of incubation, and 6-7.5% inoculum size. The model was highly significant, with a p-value of <0.0001, an F-value of 95.33, and a low CV of 2.31. The RSM model was validated by a laboratory-scale experiment showing 30600 ± 400.32 U/100 gm PGase activity. Thus, SSF and the statistical design of media components resulted in a significant 5.2-fold increase in PGase output solely by using agro waste and optimizing the physical parameters, making this a highly cost-effective bioprocess.
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Affiliation(s)
- Mary Arpana
- School of Basic and Applied Sciences, Dayananda Sagar University, Bangalore, 560078, Karnataka, India
| | - Seema S. Rathore
- School of Pharmaceutical Sciences, Dayananda Sagar University, Bangalore, 560078, Karnataka, India
| | - Archana S. Rao
- School of Basic and Applied Sciences, Dayananda Sagar University, Bangalore, 560078, Karnataka, India
| | - Ajay Nair
- School of Basic and Applied Sciences, Dayananda Sagar University, Bangalore, 560078, Karnataka, India
| | - Sunil S. More
- School of Basic and Applied Sciences, Dayananda Sagar University, Bangalore, 560078, Karnataka, India
| | - Aneesa Fasim
- School of Basic and Applied Sciences, Dayananda Sagar University, Bangalore, 560078, Karnataka, India
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Hashizume T, Ozawa Y, Ying BW. Employing active learning in the optimization of culture medium for mammalian cells. NPJ Syst Biol Appl 2023; 9:20. [PMID: 37253825 DOI: 10.1038/s41540-023-00284-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 05/18/2023] [Indexed: 06/01/2023] Open
Abstract
Medium optimization is a crucial step during cell culture for biopharmaceutics and regenerative medicine; however, this step remains challenging, as both media and cells are highly complex systems. Here, we addressed this issue by employing active learning. Specifically, we introduced machine learning to cell culture experiments to optimize culture medium. The cell line HeLa-S3 and the gradient-boosting decision tree algorithm were used to find optimized media as pilot studies. To acquire the training data, cell culture was performed in a large variety of medium combinations. The cellular NAD(P)H abundance, represented as A450, was used to indicate the goodness of culture media. In active learning, regular and time-saving modes were developed using culture data at 168 h and 96 h, respectively. Both modes successfully fine-tuned 29 components to generate a medium for improved cell culture. Intriguingly, the two modes provided different predictions for the concentrations of vitamins and amino acids, and a significant decrease was commonly predicted for fetal bovine serum (FBS) compared to the commercial medium. In addition, active learning-assisted medium optimization significantly increased the cellular concentration of NAD(P)H, an active chemical with a constant abundance in living cells. Our study demonstrated the efficiency and practicality of active learning for medium optimization and provided valuable information for employing machine learning technology in cell biology experiments.
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Affiliation(s)
- Takamasa Hashizume
- School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8572, Ibaraki, Japan
| | - Yuki Ozawa
- School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8572, Ibaraki, Japan
| | - Bei-Wen Ying
- School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8572, Ibaraki, Japan.
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Zhou T, Reji R, Kairon RS, Chiam KH. A review of algorithmic approaches for cell culture media optimization. Front Bioeng Biotechnol 2023; 11:1195294. [PMID: 37251567 PMCID: PMC10213948 DOI: 10.3389/fbioe.2023.1195294] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/03/2023] [Indexed: 05/31/2023] Open
Abstract
Cell culture media composition and culture conditions play a crucial role in product yield, quality and cost of production. Culture media optimization is the technique of improving media composition and culture conditions to achieve desired product outcomes. To achieve this, there have been many algorithmic methods proposed and used for culture media optimization in the literature. To help readers evaluate and decide on a method that best suits their specific application, we carried out a systematic review of the different methods from an algorithmic perspective that classifies, explains and compares the available methods. We also examine the trends and new developments in the area. This review provides recommendations to researchers regarding the suitable media optimization algorithm for their applications and we hope to also promote the development of new cell culture media optimization methods that are better suited to existing and upcoming challenges in this biotechnology field, which will be essential for more efficient production of various cell culture products.
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Affiliation(s)
- Tianxun Zhou
- Bioinformatics Institute, Cellular Image Informatics Division, A*STAR, Singapore, Singapore
| | - Rinta Reji
- Bioinformatics Institute, Cellular Image Informatics Division, A*STAR, Singapore, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Ryanjit Singh Kairon
- Bioinformatics Institute, Cellular Image Informatics Division, A*STAR, Singapore, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Keng Hwee Chiam
- Bioinformatics Institute, Cellular Image Informatics Division, A*STAR, Singapore, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
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Yashwant CP, Rajendran V, Krishnamoorthy S, Nagarathinam B, Rawson A, Anandharaj A, Sivanandham V. Antibiotic resistance profiling and valorization of food waste streams to starter culture biomass and exopolysaccharides through fed-batch fermentations. Food Sci Biotechnol 2023; 32:863-874. [PMID: 37041804 PMCID: PMC10082887 DOI: 10.1007/s10068-022-01222-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 11/25/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022] Open
Abstract
The present study evaluated antibiotic resistance (ABR) in bacteria isolated from different food wastes viz., meat slaughterhouses, dairy and restaurants. About 120 strains isolated from the food waste were subjected to ABR screening. More than 50% of all the strains were resistant to Vancomycin, Neomycin and Methicilin, which belong to third-generation antibiotics. Two lactic acid bacteria (LAB) free of ABR were chosen to be used as starter cultures in media formulated from food waste. Food waste combination (FWC-4) was found to be on par with the nutrient broth in biomass production. The non-ABR LAB strains showed excellent probiotic properties, and in the fed-batch fermentation process, adding a nitrogen source (soya protein) enhanced the microbial biomass (3.7 g/l). Additionally, exopolysaccharide production was found to be 2.3 g/l. This study highlights the ABR incidence in food waste medium and its economic advantage for starter culture biomass production. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s10068-022-01222-9.
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Affiliation(s)
- Chavan Priyanka Yashwant
- National Institute of Food Technology, Entrepreneurship and Management, Thanjavur (NIFTEM-T), Thanjavur, 613005 Tamil Nadu India
| | - Vijay Rajendran
- National Institute of Food Technology, Entrepreneurship and Management, Thanjavur (NIFTEM-T), Thanjavur, 613005 Tamil Nadu India
| | - Srinivasan Krishnamoorthy
- National Institute of Food Technology, Entrepreneurship and Management, Thanjavur (NIFTEM-T), Thanjavur, 613005 Tamil Nadu India
| | - Baskaran Nagarathinam
- National Institute of Food Technology, Entrepreneurship and Management, Thanjavur (NIFTEM-T), Thanjavur, 613005 Tamil Nadu India
| | - Ashish Rawson
- National Institute of Food Technology, Entrepreneurship and Management, Thanjavur (NIFTEM-T), Thanjavur, 613005 Tamil Nadu India
| | - Arunkumar Anandharaj
- National Institute of Food Technology, Entrepreneurship and Management, Thanjavur (NIFTEM-T), Thanjavur, 613005 Tamil Nadu India
| | - Vignesh Sivanandham
- National Institute of Food Technology, Entrepreneurship and Management, Thanjavur (NIFTEM-T), Thanjavur, 613005 Tamil Nadu India
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Wan S, Liu X, Sun W, Lv B, Li C. Current advances for omics-guided process optimization of microbial manufacturing. BIORESOUR BIOPROCESS 2023; 10:30. [PMID: 38647562 PMCID: PMC10992112 DOI: 10.1186/s40643-023-00647-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 03/25/2023] [Indexed: 04/25/2024] Open
Abstract
Currently, microbial manufacturing is widely used in various fields, such as food, medicine and energy, for its advantages of greenness and sustainable development. Process optimization is the committed step enabling the commercialization of microbial manufacturing products. However, the present optimization processes mainly rely on experience or trial-and-error method ignoring the intrinsic connection between cellular physiological requirement and production performance, so in many cases the productivity of microbial manufacturing could not been fully exploited at economically feasible cost. Recently, the rapid development of omics technologies facilitates the comprehensive analysis of microbial metabolism and fermentation performance from multi-levels of molecules, cells and microenvironment. The use of omics technologies makes the process optimization more explicit, boosting microbial manufacturing performance and bringing significant economic benefits and social value. In this paper, the traditional and omics technologies-guided process optimization of microbial manufacturing are systematically reviewed, and the future trend of process optimization is prospected.
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Affiliation(s)
- Shengtong Wan
- Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Xin Liu
- Department of Chemical Engineering, Tsinghua University, Beijing, China
- Key Lab for Industrial Biocatalysis, Ministry of Education, Tsinghua University, Beijing, China
- Center for Synthetic and Systems Biology, Tsinghua University, Beijing, China
| | - Wentao Sun
- Department of Chemical Engineering, Tsinghua University, Beijing, China.
- Key Lab for Industrial Biocatalysis, Ministry of Education, Tsinghua University, Beijing, China.
- Center for Synthetic and Systems Biology, Tsinghua University, Beijing, China.
| | - Bo Lv
- Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.
| | - Chun Li
- Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.
- Department of Chemical Engineering, Tsinghua University, Beijing, China.
- Key Lab for Industrial Biocatalysis, Ministry of Education, Tsinghua University, Beijing, China.
- Center for Synthetic and Systems Biology, Tsinghua University, Beijing, China.
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45
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Ma SY, Amoah OJ, Nguyen HT, Sohng JK. Glucosylation of Isoeugenol and Monoterpenes in Corynebacterium glutamicum by YdhE from Bacillus lichenformis. Molecules 2023; 28:molecules28093789. [PMID: 37175199 PMCID: PMC10180135 DOI: 10.3390/molecules28093789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Corynebacterium glutamicum has been regarded as a food-grade microorganism. In recent years, the research to improve the activities of beneficial therapeutics and pharmaceutical substances has resulted in the engineering of the therapeutically favorable cell factory system of C. glutamicum. In this study, we successfully glucosylated isoeugenol and other monoterpene derivatives in C. glutamicum using a promiscuous YdhE, which is a glycosyltransferase from Bacillus lichenformis. For efficient glucosylation, cultivation conditions such as the production time, substrate concentration, carbon source, and culture medium were optimized. Our system successfully converted about 93% of the isoeugenol to glucosylated compounds in the culture. The glucoside compounds were then purified, analyzed, and identified as isoeugenol-1-O-β-d-glucoside and isoeugenol-1-O-β-d-(2″-acetyl)-glucoside.
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Affiliation(s)
- Su Yeong Ma
- Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sun Moon-ro 221, Tangjeong-myeon, Asan-si 31460, Republic of Korea
| | - Obed Jackson Amoah
- Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sun Moon-ro 221, Tangjeong-myeon, Asan-si 31460, Republic of Korea
| | - Hue Thi Nguyen
- Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sun Moon-ro 221, Tangjeong-myeon, Asan-si 31460, Republic of Korea
| | - Jae Kyung Sohng
- Department of Life Science and Biochemical Engineering, Sun Moon University, 70 Sun Moon-ro 221, Tangjeong-myeon, Asan-si 31460, Republic of Korea
- Department of Pharmaceutical Engineering and Biotechnology, Sun Moon University, 70 Sun Moon-ro 221, Tangjeong-myeon, Asan-si 31460, Republic of Korea
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46
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Sawant AM, Navale VD, Vamkudoth KR. Isolation and Molecular Characterization of Indigenous Penicillium chrysogenum/ rubens Strain Portfolio for Penicillin V Production. Microorganisms 2023; 11:1132. [PMID: 37317105 DOI: 10.3390/microorganisms11051132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/29/2023] [Accepted: 04/10/2023] [Indexed: 06/16/2023] Open
Abstract
Beta (β)-lactam antibiotic is an industrially important molecule produced by Penicillium chrysogenum/rubens. Penicillin is a building block for 6-aminopenicillanic acid (6-APA), an important active pharmaceutical intermediate (API) used for semi-synthetic antibiotics biosynthesis. In this investigation, we isolated and identified Penicillium chrysogenum, P. rubens, P. brocae, P. citrinum, Aspergillus fumigatus, A. sydowii, Talaromyces tratensis, Scopulariopsis brevicaulis, P. oxalicum, and P. dipodomyicola using the internal transcribed spacer (ITS) region and the β-tubulin (BenA) gene for precise species identification from Indian origin. Furthermore, the BenA gene distinguished between complex species of P. chrysogenum and P. rubens to a certain extent which partially failed by the ITS region. In addition, these species were distinguished by metabolic markers profiled by liquid chromatography-high resolution mass spectrometry (LC-HRMS). Secalonic acid, Meleagrin, and Roquefortine C were absent in P. rubens. The crude extract evaluated for PenV production by antibacterial activities by well diffusion method against Staphylococcus aureus NCIM-2079. A high-performance liquid chromatography (HPLC) method was developed for simultaneous detection of 6-APA, phenoxymethyl penicillin (PenV), and phenoxyacetic acid (POA). The pivotal objective was the development of an indigenous strain portfolio for PenV production. Here, a library of 80 strains of P. chrysogenum/rubens was screened for PenV production. Results showed 28 strains capable of producing PenV in a range from 10 to 120 mg/L when 80 strains were screened for its production. In addition, fermentation parameters, precursor concentration, incubation period, inoculum size, pH, and temperature were monitored for the improved PenV production using promising P. rubens strain BIONCL P45. In conclusion, P. chrysogenum/rubens strains can be explored for the industrial-scale PenV production.
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Affiliation(s)
- Amol M Sawant
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vishwambar D Navale
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Koteswara Rao Vamkudoth
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Kumar R, Barbhuiya RI, Bohra V, Wong JWC, Singh A, Kaur G. Sustainable rhamnolipids production in the next decade - Advancing with Burkholderia thailandensis as a potent biocatalytic strain. Microbiol Res 2023; 272:127386. [PMID: 37094547 DOI: 10.1016/j.micres.2023.127386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 03/27/2023] [Accepted: 04/10/2023] [Indexed: 04/26/2023]
Abstract
Rhamnolipids are one of the most promising eco-friendly green glycolipids for bio-replacements of commercially available fossil fuel-based surfactants. However, the current industrial biotechnology practices cannot meet the required standards due to the low production yields, expensive biomass feedstocks, complicated processing, and opportunistic pathogenic nature of the conventional rhamnolipid producer strains. To overcome these problems, it has become important to realize non-pathogenic producer substitutes and high-yielding strategies supporting biomass-based production. We hereby review the inherent characteristics of Burkholderia thailandensis E264 which favor its competence towards such sustainable rhamnolipid biosynthesis. The underlying biosynthetic networks of this species have unveiled unique substrate specificity, carbon flux control and rhamnolipid congener profile. Acknowledging such desirable traits, the present review provides critical insights towards metabolism, regulation, upscaling, and applications of B. thailandensis rhamnolipids. Identification of their unique and naturally inducible physiology has proved to be beneficial for achieving previously unmet redox balance and metabolic flux requirements in rhamnolipids production. These developments in part are targeted by the strategic optimization of B. thailandensis valorizing low-cost substrates ranging from agro-industrial byproducts to next generation (waste) fractions. Accordingly, safer bioconversions can propel the industrial rhamnolipids in advanced biorefinery domains to promote circular economy, reduce carbon footprint and increased applicability as both social and environment friendly bioproducts.
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Affiliation(s)
- Rajat Kumar
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong
| | | | - Varsha Bohra
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong
| | - Jonathan W C Wong
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong; Institute of Bioresources and Agriculture and Sino-Forest Applied Research Centre for Pearl River Delta Environment, Hong Kong Baptist University, Kowloon Tong, Hong Kong
| | - Ashutosh Singh
- School of Engineering, University of Guelph, Guelph, ON N1G2W1, Canada
| | - Guneet Kaur
- School of Engineering, University of Guelph, Guelph, ON N1G2W1, Canada.
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Kamat S, Kumari M, Sajna KV, Singh SK, Kumar A, Jayabaskaran C. Improved Chrysin Production by a Combination of Fermentation Factors and Elicitation from Chaetomium globosum. Microorganisms 2023; 11:microorganisms11040999. [PMID: 37110422 PMCID: PMC10146793 DOI: 10.3390/microorganisms11040999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/26/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023] Open
Abstract
Flavonoids encompass a heterogeneous group of secondary metabolites with exceptional health benefits. Chrysin, a natural dihydroxyflavone, possesses numerous bioactive properties, such as anticancer, antioxidative, antidiabetic, anti-inflammatory, etc. However, using traditional sources of chrysin involves extracting honey from plants, which is non-scalable, unsustainable, and depends on several factors, including geography, climatic conditions, and the season, which limits its production at a larger scale. Recently, microbial production of desirable metabolites has garnered attention due to the cost-effectiveness, easy scale-up, sustainability, and low emission of waste. We previously reported for the first time the chrysin-producing marine endophytic fungus Chaetomium globosum, associated with a marine green alga. To extend our understanding of chrysin biosynthesis in C. globosum, in the present study, we have assessed the presence of flavonoid pathway intermediates in C. globosum extracts using LC-MS/MS. The presence of several key metabolites, such as dihydrokaempferol, chalcone, galangin, baicalein, chrysin, p-Coumaroyl-CoA, and p-Cinnamoyl-CoA, indicates the role of flavonoid biosynthesis machinery in the marine fungus. Further, we have aimed to enhance the production of chrysin with three different strategies: (1) optimizing the fermentation parameters, namely, growth medium, incubation time, pH, and temperature; (2) feeding key flavonoid pathway intermediates, i.e., phenylalanine and cinnamic acid; (3) elicitation with biotic elicitors, such as polysaccharide, yeast extract, and abiotic elicitors that include UV radiation, salinity, and metal stress. The combined effect of the optimized parameters resulted in a 97-fold increase in the chrysin yield, resulting in a fungal cell factory. This work reports the first approach for enhanced production of chrysin and can serve as a template for flavonoid production enhancement using marine endophytic fungi.
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Affiliation(s)
- Siya Kamat
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Madhuree Kumari
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Kuttuvan Valappil Sajna
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
- Celignis Biomass Analysis Laboratory, V94 7Y42 Limerick, Ireland
| | - Sandeep Kumar Singh
- Division of Microbiology, Indian Agricultural Research Institute, Pusa, New Delhi 110012, India
| | - Ajay Kumar
- Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
| | - C Jayabaskaran
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
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49
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Zou S, Lu J, Zhang B, Li X, Jiang Z, Xue Y, Zheng Y. A combination fermentation strategy for simultaneously increasing cellular NADP(H) level, biomass, and enzymatic activity of glufosinate dehydrogenase in Escherichia coli. Bioprocess Biosyst Eng 2023; 46:867-878. [PMID: 37022468 DOI: 10.1007/s00449-023-02871-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 03/26/2023] [Indexed: 04/07/2023]
Abstract
Oxidoreductase is one of the most important biocatalysts for the synthesis of various chiral compounds. However, their whole-cell activity is frequently affected by an insufficient supply of expensive nicotinamide cofactors. This study aimed to overcome such shortcomings by developing a combination fermentation strategy for simultaneously increasing intracellular NADP(H) level, biomass, and glufosinate dehydrogenase activity in E. coli. The results showed that the feeding mode of NAD(H) synthesis precursor and lactose inducer had essential effects on the accumulation level of intracellular NADPH. Adding 40 mg L-1 of L-aspartic acid to the medium increased the intracellular NADP(H) concentration by 36.3%. Under the pH-stat feeding mode and adding 0.4 g L-1 h-1 lactose, the NADP(H) concentration, biomass, and GluDH activity in the 5-L fermenter reached 445.7 μmol L-1, 21.7 gDCW L-1, and 8569.3 U L-1, respectively. As far as we know, this is the highest reported activity of GluDH in the fermentation broth. Finally, the 5000-L fermenter was successfully scaled up to use this fermentation approach. The combination fermentation strategy might serve as a useful approach for the high-activity fermentation of other NADPH-dependent oxidoreductases.
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Affiliation(s)
- Shuping Zou
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jiawei Lu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Bing Zhang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Xia Li
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Zhentao Jiang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yaping Xue
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China.
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Yuguo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, China
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Galante N, Palavecino Prpich N, Campos C, Cayré ME, Castro M. Alternative culture medium design for biomass production of autochthonous meat starter Latilactobacillus sakei sp. sakei ACU-2. Sci Rep 2023; 13:5205. [PMID: 36997546 PMCID: PMC10063532 DOI: 10.1038/s41598-023-29502-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 02/06/2023] [Indexed: 04/03/2023] Open
Abstract
The autochthonous strain Latilactobacillus sakei sp. sakei ACU-2 was selected as a meat starter culture for dry sausage production. Transferring this strain from laboratory scale to industry requires an increase in biomass production, while lowering process costs. In this study, a combination of techniques was applied in order to optimize the culture medium composition to enhance biomass production of L. sakei ACU-2. One variable at a time experiments, Plackett-Burman design, and mixture design were performed to fulfill the strain nutritional requirements. Eventually, the optimized formulation contained 19.46 g/L yeast extract; 8.28 g/L whey protein concentrate; 2.26 g/L soy peptone; 30 g/L cerelose; 1 g/L Tween 80; 5 g/L sodium acetate; 0.2 g/L magnesium sulfate and 0.05 g/L manganese sulfate. When L. sakei ACU-2 was cultivated in a bioreactor using the alternative medium, an enhancement of 75.5% of biomass production was achieved, in comparison to its growth in the commercial de Man, Rogosa, and Sharpe medium. Furthermore, a reduction of 62-86% of the cost was also attained. These results support a promising large-scale application of the designed medium for high biomass yields of the starter culture at minor costs.
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Affiliation(s)
- Nadia Galante
- Laboratorio de Microbiología de Alimentos, Instituto de Investigaciones en Procesos Tecnológicos Avanzados (INIPTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional del Chaco Austral (UNCAus), Comandante Fernández 755, (3700), Sáenz Peña, Chaco, Argentina
| | - Noelia Palavecino Prpich
- Laboratorio de Microbiología de Alimentos, Instituto de Investigaciones en Procesos Tecnológicos Avanzados (INIPTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional del Chaco Austral (UNCAus), Comandante Fernández 755, (3700), Sáenz Peña, Chaco, Argentina.
| | - Carmen Campos
- Departamento de Industrias, Instituto de Tecnología de Alimentos y Procesos Químicos (ITAPROQ), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Int. Güiraldes s/n, (1428), Ciudad Autónoma de Buenos Aires, Argentina
| | - María Elisa Cayré
- Laboratorio de Microbiología de Alimentos, Instituto de Investigaciones en Procesos Tecnológicos Avanzados (INIPTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional del Chaco Austral (UNCAus), Comandante Fernández 755, (3700), Sáenz Peña, Chaco, Argentina
| | - Marcela Castro
- Laboratorio de Microbiología de Alimentos, Instituto de Investigaciones en Procesos Tecnológicos Avanzados (INIPTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional del Chaco Austral (UNCAus), Comandante Fernández 755, (3700), Sáenz Peña, Chaco, Argentina
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