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El-Sayed SE, Abdelaziz NA, Ali AA, Alshahrani MY, Aboshanab KM, El-Housseiny GS. Identification, Characterization, and Production Optimization of 6-Methoxy-1H-Indole-2-Carboxylic Acid Antifungal Metabolite Produced by Bacillus toyonensis Isolate OQ071612. Microorganisms 2023; 11:2835. [PMID: 38137979 PMCID: PMC10745709 DOI: 10.3390/microorganisms11122835] [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: 09/06/2023] [Revised: 10/19/2023] [Accepted: 11/20/2023] [Indexed: 12/24/2023] Open
Abstract
Fungal infections currently pose a real threat to human lives. In the current study, soil bacterial isolates were screened for the production of antifungal compounds to combat human fungal pathogens. Notably, the bacterial F1 isolate exhibited antimycotic action towards the Candida albicans ATCC 10231 and Aspergillus niger clinical isolates. By employing phenotypic and molecular techniques, we identified the F1 isolate as the Bacillus toyonensis isolate OQ071612. The purified extract showed stability within a pH range of 6-7 and at temperatures of up to 50 °C. It demonstrated potential antifungal activity in the presence of various surfactants, detergents, and enzymes. The purified extract was identified as 6-methoxy-1H-Indole-2-carboxylic acid using advanced spectroscopic techniques. To optimize the antifungal metabolite production, we utilized response surface methodology (RSM) with a face-centered central composite design, considering nutritional and environmental variables. The optimal conditions were as follows: starch (5 g/L), peptone (5 g/L), agitation rate of 150 rpm, pH 6, and 40 °C temperature. A confirmatory experiment validated the accuracy of the optimization process, resulting in an approximately 3.49-fold increase in production. This is the first documented report on the production and characterization of 6-methoxy-1H-Indole-2-carboxylic acid (MICA) antifungal metabolite from Bacillus toyonensis.
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Affiliation(s)
- Sayed E. El-Sayed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ahram Canadian University, Giza 12566, Egypt; (S.E.E.-S.); (N.A.A.)
| | - Neveen A. Abdelaziz
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ahram Canadian University, Giza 12566, Egypt; (S.E.E.-S.); (N.A.A.)
| | - Amer Al Ali
- Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, University of Bisha, 255, Al Nakhil, Bisha 67714, Saudi Arabia;
| | - Mohammad Y. Alshahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61413, Saudi Arabia;
| | - Khaled M. Aboshanab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt;
| | - Ghadir S. El-Housseiny
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt;
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Abd-Allah IM, El-Housseiny GS, Al-Agamy MH, Radwan HH, Aboshanab KM, Hassouna NA. Statistical optimization of a podoviral anti-MRSA phage CCASU-L10 generated from an under sampled repository: Chicken rinse. Front Cell Infect Microbiol 2023; 13:1149848. [PMID: 37065190 PMCID: PMC10102507 DOI: 10.3389/fcimb.2023.1149848] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 03/07/2023] [Indexed: 04/03/2023] Open
Abstract
IntroductionThe insurgence of antimicrobial resistance is an imminent health danger globally. A wide range of challenging diseases are attributed to methicillin-resistant Staphylococcus aureus (MRSA) as it is weaponized with a unique array of virulence factors, and most importantly, the resistance it develops to most of the antibiotics used clinically. On that account, the present study targeted the optimization of the production of a bacteriophage active against MRSA, and evaluating some of its characters.Methods and resultsThe bacteriophage originated from a quite peculiar environmental source, raw chicken rinse and was suggested to belong to Podoviridae, order Caudovirales. It withstood a variety of extreme conditions and yield optimization was accomplished via the D-optimal design by response surface methodology (RSM). A reduced quadratic model was generated, and the ideal production conditions recommended were pH 8, glycerol 0.9% v/v, peptone 0.08% w/v, and 107 CFU/ml as the host inoculum size. These conditions led to a two-log fold increase in the phage titer (1.17x10¹² PFU/ml), as compared to the regular conditions.DiscussionTo conclude, statistical optimization successfully enhanced the output of the podoviral phage titer by two-log fold and therefore, can be regarded as a potential scale-up strategy. The produced phage was able to tolerate extreme environmental condition making it suitable for topical pharmaceutical preparations. Further preclinical and clinical studies are required to ensure its suitability for use in human.
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Affiliation(s)
- Israa M. Abd-Allah
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity Street, Abbassia, Cairo, Egypt
| | - Ghadir S. El-Housseiny
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity Street, Abbassia, Cairo, Egypt
- *Correspondence: Ghadir S. El-Housseiny, ; Khaled M. Aboshanab,
| | - Mohamed H. Al-Agamy
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
- Department of Microbiology and Immunology, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Hesham H. Radwan
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Khaled M. Aboshanab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity Street, Abbassia, Cairo, Egypt
- *Correspondence: Ghadir S. El-Housseiny, ; Khaled M. Aboshanab,
| | - Nadia A. Hassouna
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity Street, Abbassia, Cairo, Egypt
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Dabaghi S, Ataei SA, Taheri A. Production of rhamnolipid biosurfactants in solid-state fermentation: process optimization and characterization studies. BMC Biotechnol 2023; 23:2. [PMID: 36694155 PMCID: PMC9872355 DOI: 10.1186/s12896-022-00772-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/30/2022] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Rhamnolipids are a group of the extracellular microbial surface-active molecules produced by certain Pseudomonas species with various environmental and industrial applications. The goal of the present research was to identify and optimize key process parameters for Pseudomonas aeruginosa PTCC 1074s synthesis of rhamnolipids utilizing soybean meal in solid state fermentation. A fractional factorial design was used to screen the key nutritional and environmental parameters to achieve the high rhamnolipid production. Response surface methodology was used to optimize the levels of four significant factors. RESULTS The characterization of biosurfactant by TLC, FT-IR and H-NMR showed the rhamnolipids presence. In the optimum conditions (temperature 34.5 °C, humidity 80%, inoculum size 1.4 mL, and glycerol 5%), the experimental value of rhamnolipid production was 19.68 g/kg dry substrate. The obtained rhamnolipid biosurfactant decreased water's surface tension from 71.8 ± 0.4 to 32.2 ± 0.2 mN/m with a critical micelle concentration of nearly 70 mg/L. Additionally, analysis of the emulsification activity revealed that the generated biosurfactant was stable throughout a broad pH, temperature, and NaCl concentration range. CONCLUSIONS The current study confirmed the considerable potential of agro-industrial residues in the production of rhamnolipid and enhanced the production yield by screening and optimizing the significant process parameters.
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Affiliation(s)
- Shima Dabaghi
- grid.412503.10000 0000 9826 9569Department of Chemical Engineerig, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Seyed Ahmad Ataei
- grid.412503.10000 0000 9826 9569Department of Chemical Engineerig, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Ali Taheri
- grid.459445.d0000 0004 0481 4546Fisheries Department, Faculty of Marine Sciences, Chabahar Maritime University, Chabahar, Iran
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Selection and Optimization of Medium Components for the Efficient Production of L-Asparaginase by Leucosporidium scottii L115—A Psychrotolerant Yeast. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8080398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study reports the production of L-asparaginase (ASNase), an enzyme mainly used for the treatment of acute lymphoblastic leukemia, by Leucosporidiumscottii L115, a psychrotolerant yeast isolated from the Antarctic ecosystem. Focus was given to select the most appropriate medium components able to maximize the enzyme production by this yeast, as a first step for the development of a new process to produce ASNase. By combining knowledge in bioprocesses, statistical analysis and modeling, the medium composition that most favored enzyme production was established, which consisted of using a mixture of sucrose (28.34 g L−1) and glycerol (15.61 g L−1) as carbon sources, supplemented with proline (6.15 g L−1) and the following salts (g L−1): KCl, 0.52; MgSO4·7H2O, 0.52; CuNO3·3H2O, 0.001; ZnSO4·7H2O, 0.001; and FeSO4·7H2O, 0.001. By using this medium, enzyme production of 2850 U L−1 (productivity of 23.75 U L−1 h−1) was obtained, which represented a 28-fold increase in enzyme production per gram of cells (178 U gdcw−1) when compared to the control (non-optimized medium), and a 50-fold increase when compared to a reference medium used for ASNase production.
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Abd-Allah IM, El-Housseiny GS, Alshahrani MY, El-Masry SS, Aboshanab KM, Hassouna NA. An Anti-MRSA Phage From Raw Fish Rinse: Stability Evaluation and Production Optimization. Front Cell Infect Microbiol 2022; 12:904531. [PMID: 35656033 PMCID: PMC9152141 DOI: 10.3389/fcimb.2022.904531] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 04/13/2022] [Indexed: 11/26/2022] Open
Abstract
Accumulating evidence has denoted the danger of resistance in tenacious organisms like methicillin-resistant Staphylococcus aureus (MRSA). MRSA, a supple bacterium that adopts a variety of antibiotic resistance mechanisms, is the cause of multiple life-threatening conditions. Approaching a post-antibiotic era, bacteria-specific natural predators, bacteriophages, are now given the chance to prove eligible for joining the antibacterial weaponry. Considering the foregoing, this study aimed at isolating bacteriophages with promising anti-MRSA lytic activity, followed by characterization and optimization of the production of the bacteriophage with the broadest host range. Five phages were isolated from different environmental sources including the rinse of raw chicken egg, raw milk, and, remarkably, the raw meat rinses of chicken and fish. Examined for lytic activity against a set of 23 MRSA isolates collected from various clinical specimens, all five phages showed relatively broad host ranges with the bacteriophage originally isolated from raw fish rinse showing lytic activity against all the isolates tested. This phage is suggested to be a member of Siphoviridae family, order Caudovirales, as revealed by electron microscopy. It also exhibited good thermal stability and viability at different pH grades. Moreover, it showed reasonable stability against UV light and all viricidal organic solvents tested. Optimization using D-optimal design by response surface methodology was carried out to enhance the phage yield. The optimum conditions suggested by the generated model were a pH value of 7, a carbon source of 0.5% w/v sucrose, and a nitrogen source of 0.1% w/v peptone, at a temperature of 28°C and a bacterial inoculum size of 107 CFU/ml, resulting in a 2 log-fold increase in the produced bacteriophage titer. Overall, the above findings indicate the lytic ability inflicted by this virus on MRSA. Apparently, its stability under some of the extreme conditions tested implies its potential to be a candidate for pharmaceutical formulation as an anti-MRSA therapeutic tool. We hope that bacteriophages could tip the balance in favor of the human front in their battle against multidrug-resistant pathogens.
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Affiliation(s)
- Israa M. Abd-Allah
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Ghadir S. El-Housseiny
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Mohammad Y. Alshahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Samar S. El-Masry
- Department of Agricultural Microbiology, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
| | - Khaled M. Aboshanab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Nadia A. Hassouna
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
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Wang F, Song Y, Vidyarthi SK, Zhang R. Physicochemical properties, and volatile compounds of blackened jujube vinegar as prepared by optimized fermentation process. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2022. [DOI: 10.1080/10942912.2022.2032735] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Fangzhou Wang
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Tai An, China
| | - Yaru Song
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Tai An, China
| | - Sriram K. Vidyarthi
- Department of Biological and Agricultural Engineering, University of California, Davis, CA, USA
- Research and Development, The Morning Star Company, Woodland, CA, USA
| | - Rentang Zhang
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Tai An, China
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Moussa Z, Darwish DB, Alrdahe SS, Saber WIA. Innovative Artificial-Intelligence- Based Approach for the Biodegradation of Feather Keratin by Bacillus paramycoides, and Cytotoxicity of the Resulting Amino Acids. Front Microbiol 2021; 12:731262. [PMID: 34745034 PMCID: PMC8569898 DOI: 10.3389/fmicb.2021.731262] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 09/27/2021] [Indexed: 11/13/2022] Open
Abstract
The current study reported a new keratinolytic bacterium, which was characterized as Bacillus paramycoides and identified by 16S rRNA, and the sequence was then deposited in the GenBank (MW876249). The bacterium was able to degrade the insoluble chicken feather keratin (CFK) into amino acids (AA) through the keratinase system. The statistical optimization of the biodegradation process into AA was performed based on the Plackett–Burman design and rotatable central composite design (RCCD) on a simple solid-state fermentation medium. The optimum conditions were temperature, 37°C, 0.547 mg KH2PO4, 1.438 mg NH4Cl, and 11.61 days of incubation. Innovatively, the degradation of the CFK process was modeled using the artificial neural network (ANN), which was better than RCCD in modeling the biodegradation process. Differentiation of the AA by high-performance liquid chromatography (HPLC) revealed the presence of 14 AA including essential and non-essential ones; proline and aspartic acids were the most dominant. The toxicity test of AA on the HepG2 cell line did not show any negative effect either on the cell line or on the morphological alteration. B. paramycoides ZW-5 is a new eco-friendly tool for CFK degradation that could be optimized by ANN. However, additional nutritional trials are encouraged on animal models.
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Affiliation(s)
- Zeiad Moussa
- Microbial Activity Unit, Microbiology Department, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt
| | - Doaa B Darwish
- Botany Department, Faculty of Science, Mansoura University, Mansoura, Egypt.,Department of Biology, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - Salma S Alrdahe
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - WesamEldin I A Saber
- Microbial Activity Unit, Microbiology Department, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt
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Kasemiire A, Avohou HT, De Bleye C, Sacre PY, Dumont E, Hubert P, Ziemons E. Design of experiments and design space approaches in the pharmaceutical bioprocess optimization. Eur J Pharm Biopharm 2021; 166:144-154. [PMID: 34147574 DOI: 10.1016/j.ejpb.2021.06.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 01/04/2023]
Abstract
The optimization of pharmaceutical bioprocesses suffers from several challenges like complexity, upscaling costs, regulatory approval, leading to the risk of delivering substandard drugs to patients. Bioprocess is very complex and requires the evaluation of multiple components that need to be monitored and controlled in order to attain the desired state when the process ends. Statistical design of experiments (DoE) is a powerful tool for optimizing bioprocesses because it plays a critical role in the quality by design strategy as it is useful in exploring the experimental domain and providing statistics of interest that enable scientists to understand the impact of critical process parameters on the critical quality attributes. This review summarizes selected publications in which DoE methodology was used to optimize bioprocess. The main objective of the critical review was to clearly demonstrate potential benefits of using the DoE and design space methodologies in bioprocess optimization.
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Affiliation(s)
- Alice Kasemiire
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium.
| | - Hermane T Avohou
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
| | - Charlotte De Bleye
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
| | - Pierre-Yves Sacre
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
| | - Elodie Dumont
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
| | - Philippe Hubert
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
| | - Eric Ziemons
- University of Liege (ULiege), CIRM, ViBra-Sante Hub, Department of Pharmacy, Pharmaceutical Analytical Chemistry, Avenue Hippocrate 15, 4000 Liege, Belgium
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Venkatasubbaiah R, Jha PK, Sanjay KR. Centella asiatica crop residue fabricated silver nanoparticles as potent antioxidant agents in photo-catalytic degradation of hazardous dyes. CHEM ENG COMMUN 2021. [DOI: 10.1080/00986445.2021.1931146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Rashmi Venkatasubbaiah
- Department of Biotechnology, Sri Jayachamarajendra College of Engineering, JSS Science and Technology University, Mysuru, Karnataka, India
| | - Prakash Kumar Jha
- Department of Biotechnology, Sri Jayachamarajendra College of Engineering, JSS Science and Technology University, Mysuru, Karnataka, India
| | - Konasur Rajesh Sanjay
- Department of Biotechnology, Sri Jayachamarajendra College of Engineering, JSS Science and Technology University, Mysuru, Karnataka, India
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Wang Q, Peng C, Shi L, Liu Z, Zhou D, Meng H, Zhao H, Li F, Zhang M. A Technical System for the Large-Scale Application of Metabolites From Paecilomyces variotii SJ1 in Agriculture. Front Bioeng Biotechnol 2021; 9:671879. [PMID: 34055763 PMCID: PMC8149806 DOI: 10.3389/fbioe.2021.671879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/08/2021] [Indexed: 01/31/2023] Open
Abstract
Compared with endophytes, metabolites from endophytes (MEs) have great potential in agriculture. However, a technique for industrializing the production of MEs is still scarce. Moreover, the establishment of effective methods for evaluating the quality of MEs is hampered by the fact that some compounds with beneficial effects on crops have not been clearly identified. Herein, a system was established for the production, quality control and application of MEs by using the extract from Paecilomyces variotii SJ1 (ZNC). First, the extraction conditions of ZNC were optimized through response surface methodology, after which each batch (500 L) met the consumption requirements of crops in 7,467 hectares. Then, chromatographic fingerprinting and enzyme-linked immunosorbent assay were applied to evaluate the similarity and specificity of unknown effective components in ZNC, ensuring a similarity of more than 90% and a quantitative accuracy of greater than 99.9% for the products from different batches. Finally, the bioactivity of industrially produced ZNC was evaluated in the field, and it significantly increased the potato yields by 4.4–10.8%. Overall, we have established a practical technical system for the large-scale application of ZNC in agriculture.
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Affiliation(s)
- Qingbin Wang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, National Engineering and Technology Research Center for Slow and Controlled Release Fertilizers, Shandong Agricultural University, Tai'an, China.,Shandong Pengbo Biotechnology Co., Ltd., Tai'an, China
| | - Chune Peng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Liran Shi
- Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, National Glycoengineering Research Center, Shandong University, Qingdao, China
| | - Zhiguang Liu
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, National Engineering and Technology Research Center for Slow and Controlled Release Fertilizers, Shandong Agricultural University, Tai'an, China
| | - Dafa Zhou
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Hui Meng
- Shandong Pengbo Biotechnology Co., Ltd., Tai'an, China
| | - Hongling Zhao
- Shandong Pengbo Biotechnology Co., Ltd., Tai'an, China
| | - Fuchuan Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Min Zhang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, National Engineering and Technology Research Center for Slow and Controlled Release Fertilizers, Shandong Agricultural University, Tai'an, China
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Optimization of Sr-90 precipitation in nitric acid using design of experiments for radioactive waste characterization method. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07680-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Mahmoud GAE, Bashandy SR. Nitrogen, Amino Acids, and Carbon as Control Factors of Riboflavin Production by Novosphingobium panipatense-SR3 (MT002778). Curr Microbiol 2021; 78:1577-1589. [PMID: 33675404 DOI: 10.1007/s00284-021-02376-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 02/05/2021] [Indexed: 10/22/2022]
Abstract
By increasing the environmental pollution, crop losses, and side effects of chemically synthesized vitamins; new vitamin sources should be included. Through this study, we introduce novel riboflavin bacterial producer Novosphingobium panipatense-SR3 (MT002778) and tested various nutritional factors with interactions effects on the production abilities. Yeast extract, maltose, and glycine were the best nitrogen, carbon, and amino acid sources for enhancing the production, respectively. The interaction between the previous factors with three concentrations of each (+, 0, -) studied statistically using Box-Behnken statistical quadric design 13- run. The perfect interaction increases the production to 497.12 mg/l (predicted 489.45 mg/l) using 30 g/l maltose, 10 g/l yeast extract, and 1 g/l glycine. The F and P- values of the tested model of riboflavin and OD600 indicating significant results with probability ≤ 0.05. Also, the evaluating statistical parameter coefficient (R2) was 0.994 of riboflavin and 0.992 of OD600 with adjusted R2 value 0.976, and 0.967, respectively, which indicated that the whole variations were explained highly by the statistical model. The novel producer proved its high riboflavin production ability especially under the optimized conditions comparing with previous producers and represents a new high-speed riboflavin producer that could utilize in the industrial process.
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Affiliation(s)
| | - Shymaa Ryhan Bashandy
- Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt.
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Octadecyl 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propanoate, an antifungal metabolite of Alcaligenes faecalis strain MT332429 optimized through response surface methodology. Appl Microbiol Biotechnol 2020; 104:10755-10768. [PMID: 33090249 DOI: 10.1007/s00253-020-10962-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/06/2020] [Accepted: 10/12/2020] [Indexed: 10/23/2022]
Abstract
In the current study, a soil bacterial isolate F2 expressed a significant antagonistic activity against Candida albicans ATCC 10231 and Aspergillus niger clinical isolate confirmed through cross streak, dual culture, and agar well diffusion methods. The isolate F2 was identified using phenotypic and molecular approaches as Alcaligenes (A.) faecalis MT332429. The identification and structural characterization of the antifungal compound was performed using advanced spectroscopic techniques including UV absorbance, 1H and 13C NMR and 2D NMR (COSY, HSQC, and HMBC) and was identified as octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate. Response surface methodology (RSM) using a central composite design was employed to optimize the nutritional and cultural variables affecting the antifungal metabolite yield. The optimum conditions were found to be temperature 30 °C, agitation 150 rpm, glucose 1 g/l, peptone 2 g/l, and pH 8. A confirmatory experiment was performed to assess the accuracy of the optimization procedure, where an increase in the antifungal metabolite production by about 2.48-fold was obtained. To the best of our knowledge, this is the first report of octadecyl 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propanoate recovered from the culture broth of A. faecalis MT332429 with a promising antifungal activity along with its optimized production through RSM. KEY POINTS: • A novel soil bacterial isolate, F2, identified as Alcaligenes faecalis MT332429, showed significant antagonistic activity against Candida albicans ATCC 10231 and Aspergillus niger clinical isolate. • This stable fungicidal extracellular metabolite was identified as octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propanoate. • Optimization using central composite design resulted in 2.48-fold increase in production reaching 213.82 μg/ml.
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Statistical Optimization of Parameters for Enhanced Bioactive Metabolites Produced by Streptomyces hygroscopicus AVS7. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2020. [DOI: 10.1007/s13369-020-05116-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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El-Sayed SE, El-Housseiny GS, Abdelaziz NA, El-Ansary MR, Aboshanab KM. Optimized Production of the Allylamine Antifungal "Terbinafine" by Lysinibacillus Isolate MK212927 Using Response Surface Methodology. Infect Drug Resist 2020; 13:3613-3626. [PMID: 33116681 PMCID: PMC7571585 DOI: 10.2147/idr.s267590] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Accepted: 09/15/2020] [Indexed: 01/17/2023] Open
Abstract
Purpose We aimed to optimize the factors affecting the production of the allylamine antifungal, terbinafine, by Lysinibacillus isolate MK212927, a natural producer of this broad-spectrum fungicidal compound. Methods We employed a central composite design to optimize the five most important variables influencing the production of terbinafine which were carbon source, nitrogen source, temperature, pH and agitation. Results The optimum conditions were found to be starch 5 g/L, ammonium chloride 5 g/L, temperature 32°C, agitation 150 rpm and pH 7. The actual response (inhibition zone diameter) was highly comparable to the value predicted by the model, indicating a valid model. Using the standard calibration curve of terbinafine, the optimized conditions resulted in an increase in the antifungal metabolite production (terbinafine) by about 1.6-fold (1814.662 µg/mL compared to 1165.550 µg/mL under standardized conditions). Conclusion This is the first report, to the best of our knowledge, on optimized production of terbinafine by Lysinibacillus species. Hence, these findings may be useful as baseline data for scaling up the production of terbinafine from a natural microbial source.
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Affiliation(s)
- Sayed E El-Sayed
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ahram Canadian University, Giza, Egypt
| | - Ghadir S El-Housseiny
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt
| | - Neveen A Abdelaziz
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ahram Canadian University, Giza, Egypt
| | - Mona R El-Ansary
- Department of Biochemistry, Modern University for Technology and Information (MTI), Cairo, Egypt
| | - Khaled M Aboshanab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt
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Efficient production of cyclic adenosine monophosphate from adenosine triphosphate by the N-terminal half of adenylate cyclase from Escherichia coli. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2020.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Almalki MA. In-Vitro Screening and Biosynthesis of Secondary Metabolites from a New Streptomyces sp. SA1 from a Marine Environment. Curr Pharm Biotechnol 2020; 21:1333-1341. [PMID: 32568017 DOI: 10.2174/1389201021666200622120850] [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: 06/28/2019] [Revised: 11/01/2019] [Accepted: 04/12/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Streptomyces sp. produces various antibiotic agents and the number of lead molecules from the genus Streptomyces increased rapidly in recent years. Drug resistance against various commercially available antibiotics is one of the important problems throughout the world. Streptomyces spp. produce various antimicrobials with potent activity against drug-resistant bacteria. METHODS Streptomyces sp. SA1 was isolated from the marine environment for the biosynthesis of antibiotics. The important variables influencing secondary metabolite biosynthesis were optimized to increase the biosynthesis of antimicrobial agents using the traditional method and statistical approach. RESULTS Streptomyces sp. SA1 produced novel antibiotics and the process variables were optimized by the traditional method (One-variable-at-a-time approach). Maltose showed maximum antimicrobial activity (220 U/mL). Analysis of the nitrogen, the effect of nitrogen sources revealed that beef extract incorporated culture medium showed rich antibacterial activity (188/mL). Among the ionic sources, KCl significantly influenced antibiotic production. Maltose, beef extract and KCl were considered as the most influencing medium components. Antimicrobial agent biosynthesis was achieved with maltose 1.22 g/L, beef extract 0.93 g/L and KCl 0.27 g/L in response surface methodology. CONCLUSION Actinomycetes, especially Streptomyces, play an important role as a source for bioactive compounds that are used to treat infections, and many other diseases. The isolated Streptomyces sp. was a good producer of antibacterial agent, which required various nutritional supplements in the culture medium. The optimized medium components investigated in this study will be useful for future studies with the mass production of secondary metabolites.
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Affiliation(s)
- Mohammed A Almalki
- Department of Biological Sciences, College of Science, King Faisal University, Hofuf, Saudi Arabia
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18
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Giri R, Sharma RK. Fungal pretreatment of lignocellulosic biomass for the production of plant hormone by Pichia fermentans under submerged conditions. BIORESOUR BIOPROCESS 2020. [DOI: 10.1186/s40643-020-00319-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
AbstractThe study was designed to evaluate the production of auxin by eukaryotic unicellular organism Pichia fermentans. Different media formulations were used for the production of indole-3-acetic acid (IAA) under broth and submerged conditions. Wheat straw-based production medium was formulated and optimized using statistical approach. The IAA production was significantly enhanced by nine folds, when the wheat straw was pretreated with Phanerochaete chrysosporium (150 µg/ml) as compared to untreated wheat straw (16.44 µg/ml). Partial purification of IAA was carried out by silica gel column chromatography and further confirmed by high-performance liquid chromatography. Exogenous application of crude and partially purified IAA positively influenced the Vigna radiata seedling growth. The number of lateral roots in the growing seedlings was significantly higher as compared to the control seeds. Thus, the present findings point towards an efficient production of plant hormone by yeast and white rot fungus using abundantly available wheat straw, which may lead to the development of cost-effective production of such metabolites and their further use in agricultural field to reduce the negative impact of chemical fertilizers.
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El-Naggar NEA, El-Shweihy NM. Bioprocess development for L-asparaginase production by Streptomyces rochei, purification and in-vitro efficacy against various human carcinoma cell lines. Sci Rep 2020; 10:7942. [PMID: 32409719 PMCID: PMC7224186 DOI: 10.1038/s41598-020-64052-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/09/2020] [Indexed: 12/17/2022] Open
Abstract
In the near future, the demand for L-asparaginase is expected to rise several times due to an increase in its clinical and industrial applications in various industrial sectors, such as food processing. Streptomyces sp. strain NEAE-K is potent L-asparaginase producer, isolated and identified as new subsp. Streptomyces rochei subsp. chromatogenes NEAE-K and the sequence data has been deposited under accession number KJ200343 at the GenBank database. Sixteen different independent factors were examined for their effects on L-asparaginase production by Streptomyces rochei subsp. chromatogenes NEAE-K under solid state fermentation conditions using Plackett-Burman design. pH, dextrose and yeast extract were the most significant factors affecting L-asparaginase production. Thus, using central composite design, the optimum levels of these variables were determined. L-asparaginase purification was carried out by ammonium sulfate followed by DEAE-Sepharose CL-6B ion exchange column with a final purification fold of 16.18. The monomeric molecular weight of the purified L-asparaginase was 64 kD as determined by SDS-PAGE method. The in vitro effects of L-asparaginase were evaluated on five human tumor cell lines and found to have a strong anti-proliferative effects. The results showed that the strongest cytotoxic effect of L-asparaginase was exerted on the HeLa and HepG-2 cell lines (IC50 = 2.16 ± 0.2 and 2.54 ± 0.3 U/mL; respectively). In addition, the selectivity index of L-asparaginase against HeLa and HepG-2 cell lines was 3.94 and 3.35; respectively.
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Affiliation(s)
- Noura El-Ahmady El-Naggar
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, Alexandria, Egypt.
| | - Nancy M El-Shweihy
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, Alexandria, Egypt
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20
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Abd Razak NF, Shamsuddin M. Catalytic reduction of 4-nitrophenol over biostabilized gold nanoparticles supported onto thioctic acid functionalized silica-coated magnetite nanoparticles and optimization using response surface methodology. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1720724] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Nur Fadzilah Abd Razak
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
| | - Mustaffa Shamsuddin
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
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21
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El-Naggar NEA, Moawad H, El-Shweihy NM, El-Ewasy SM, Elsehemy IA, Abdelwahed NAM. Process development for scale-up production of a therapeutic L-asparaginase by Streptomyces brollosae NEAE-115 from shake flasks to bioreactor. Sci Rep 2019; 9:13571. [PMID: 31537817 PMCID: PMC6753079 DOI: 10.1038/s41598-019-49709-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 08/30/2019] [Indexed: 11/25/2022] Open
Abstract
L-asparaginase is a promising enzyme that has a wide range of significant applications including cancer therapy and starchy food industries. The statistical design of Plackett-Burman and face centered central composite design were employed to optimize L-asparaginase production by Streptomyces brollosae NEAE-115. As a result, a medium of the following formula is the optimum for producing L-asparaginase in the culture filtrate of Streptomyces brollosae NEAE-115: Dextrose 2 g, starch 20 g, L-asparagine 10 g, KNO3 1 g, K2HPO4 1 g, MgSO4.7H2O 0.5 g, NaCl 0.1 g, pH 7, fermentation period 7 days, temperature 30 °C, inoculum size 4%, v/v, agitation speed 150 rpm and inoculum age 48 h. The kinetics of cell growth, carbohydrates consumption and L- asparaginase production were studied in 7-L stirred tank bioreactor under different cultivation conditions. A significant increase in both cell growth and carbohydrate consumption was observed as the stirring speed increased from 200 to 600 rpm under uncontrolled pH. The highest L- asparaginase activity of 108.46 U/mL was obtained after 96 h at 400 rpm. On the other hand, the specific enzyme production (Yp/x) under uncontrolled pH reached its maximal value of about 20.3 U/mg cells. Further improvement of enzyme production was attained by controlling pH at 7 using the selected stirring speed of 400 rpm. Enzyme production of 162.11 U/mL obtained from the controlled pH cultures exceeded this value gained from uncontrolled pH (108.46 U/mL) by about 50%.
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Affiliation(s)
- Noura El-Ahmady El-Naggar
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technological Applications, Alexandria, Egypt.
| | - Hassan Moawad
- Department of Agricultural Microbiology at National Research Center, Cairo, Egypt
| | - Nancy M El-Shweihy
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technological Applications, Alexandria, Egypt
| | - Sara M El-Ewasy
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technological Applications, Alexandria, Egypt
| | - Islam A Elsehemy
- Chemistry of Natural and Microbial Products Dept., Pharmaceutical Industry Division, National Research Centre, 33 El Buhouth St.(Former El Tahrir St.), 12622-Dokki, Giza, Egypt
| | - Nayera A M Abdelwahed
- Chemistry of Natural and Microbial Products Dept., Pharmaceutical Industry Division, National Research Centre, 33 El Buhouth St.(Former El Tahrir St.), 12622-Dokki, Giza, Egypt
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22
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Ning J, Yue S. Optimization of preparation conditions of eucalyptus essential oil microcapsules by response surface methodology. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.14188] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jingxian Ning
- College of Food Science South China Agricultural University Guangzhou China
| | - Shuli Yue
- College of Food Science South China Agricultural University Guangzhou China
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Mathematical modeling for bioprocess optimization of a protein drug, uricase, production by Aspergillus welwitschiae strain 1-4. Sci Rep 2019; 9:12971. [PMID: 31506445 PMCID: PMC6736946 DOI: 10.1038/s41598-019-49201-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 08/21/2019] [Indexed: 11/08/2022] Open
Abstract
Microbial uricase is effective protein drug used to treat hyperuricemia and its complications, including chronic gout, also in prophylaxis and treatment of tumor lysis and organ transplants hyperuricemia. Uricase is commonly used as diagnostic reagent in clinical analysis for quantification of uric acid in blood and other biological fluids. Also, it can be used as an additive in formulations of hair coloring agents. A newly isolated strain, Aspergillus sp. 1–4, was able to produce extracellular uricase on a medium containing uric acid as inducer. Phylogenetic analysis based on ITS region sequence analysis and phenotypic characteristics showed that Aspergillus sp. strain 1–4 is closely related to Aspergillus welwitschiae and its nucleotide sequence was deposited in the GenBank database and assigned sequence accession number MG323529. Statistical screening using Plackett-Burman design with 20 runs was applied to screen fifteen factors for their significance on uricase production by Aspergillus welwitschiae. Results of statistical analysis indicated that incubation time has the most significant positive effect on uricase production followed by yeast extract and inoculum size with the highest effect values of 13.48, 5.26 and 4.75; respectively. The interaction effects and optimal levels of these factors were evaluated using central composite design. The maximum uricase production was achieved at incubation time (5 days), yeast extract (2 g/L) and inoculum size (4 mL/50 mL medium) are the optimum levels for maximum uricase production (60.03 U/mL). After optimization, uricase production increased by 3.02-folds as compared with that obtained from the unoptimized medium (19.87 U/mL).
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Bose AL, Goswami D. Biocatalytic production of ricinoleic acid from castor oil: augmentation by ionic liquid. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2019.1635465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Abir Lal Bose
- Department of Chemical Engineering, University College of Science and Technology, University of Calcutta, Kolkata, West Bengal, India
| | - Debajyoti Goswami
- Department of Chemical Engineering, University College of Science and Technology, University of Calcutta, Kolkata, West Bengal, India
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25
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Manikandan M, Gowdaman V, Duraimurugan K, Prabagaran SR. Taxonomic characterization and antimicrobial compound production from Streptomyces chumphonensis BDK01 isolated from marine sediment. 3 Biotech 2019; 9:167. [PMID: 30997304 PMCID: PMC6449414 DOI: 10.1007/s13205-019-1687-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 03/19/2019] [Indexed: 10/27/2022] Open
Abstract
Streptomyces sp. isolated from marine sediment collected from Palk Strait, Bay of Bengal was investigated for its antagonistic potential. The isolate exhibited antimicrobial activity against selected bacterial strains of clinical importance such as Staphylococcus aureus MTCC 3160, Bacillus pumilus NCIM 2327, S. aureus (methicillin resistant), Escherichia coli MTCC 1698, E. coli (ESBL), Shigella flexneri MTCC 1457, Proteus vulgaris and Enterobacter cloacae. Phenotypic and molecular characterization ascertained the isolate BDK01 as Streptomyces chumphonensis. Media optimization with one variable-at-a-time strategy was attempted to identify the ideal concentrations of starch (5-15 g/l), casein (0.01-0.05 g/l), NaCl 1.0-3.0 g/l, pH (4.0-9.0 g/l), temperature (25-45 °C) and inoculum level (0.5-5 ml) towards achieving maximum antimicrobial compound production. Statistical optimization of production media was carried by establishing an 11 variables 17 run experiment through PB model which evinced starch, calcium carbonate, pH and inoculum concentration that highly influenced bioactive compound production. Spectral data of active ethyl acetate extract revealed the presence of various bioactive compounds such as Salicyl alcohol, N-phenyl benzamide. 6-Octadecenoic acid, (Z), 1,3,5-Cycloheptatriene. Antiproliferation activity of active fraction against MCF-7 Cell line exhibited IC50 value of 9.5 µg/ml. Overall, it is observed that the marine actinomycete S. chumphonensis BDK01 could be employable as promising strain for novel antimicrobial and cytotoxic metabolites.
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Affiliation(s)
- Madheslu Manikandan
- Department of Biotechnology, Sri Krishna Arts and Science College, Coimbatore, 641 008 India
| | | | - Kasiviswanathan Duraimurugan
- School of Community Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, 711 103 India
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Li B, Yan ZY, Liu XN, Zhou J, Wu XY, Wei P, Jia HH, Yong XY. Increased fermentative adenosine production by gene-targeted Bacillus subtilis mutation. J Biotechnol 2019; 298:1-4. [PMID: 30974118 DOI: 10.1016/j.jbiotec.2019.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 03/14/2019] [Accepted: 04/06/2019] [Indexed: 11/17/2022]
Abstract
Adenosine, which is produced mainly by microbial fermentation, plays an important role in the therapy of cardiovascular disease and has been widely used as an antiarrhythmic agent. In this study, guanosine 5'-monophosphate (GMP) synthetase gene (guaA) was inactivated by gene-target manipulation to increase the metabolic flux from inosine 5'-monophosphate (IMP) to adenosine in B. subtilis A509. The resulted mutant M3-3 showed an increased adenosine production from 7.40 to 10.45 g/L, which was further enhanced to a maximum of 14.39 g/L by central composite design. As the synthesis of succinyladenosine monophosphate (sAMP) from IMP catalysed by adenylosuccinate synthetase (encoded by purA gene) is the rate-limiting step in adenosine synthesis, the up-regulated transcription level of purA was the potential underlying mechanism for the increased adenosine production. This work demonstrated a practical strategy for breeding B. subtilis strains for industrial nucleoside production.
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Affiliation(s)
- Biao Li
- College of Biotechnology and Pharmaceutical Engineering, Bioenergy Research Institute, Nanjing Tech University, Nanjing, 211816, China
| | - Zhi-Ying Yan
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, 610041, China
| | - Xiao-Na Liu
- College of Biotechnology and Pharmaceutical Engineering, Bioenergy Research Institute, Nanjing Tech University, Nanjing, 211816, China
| | - Jun Zhou
- College of Biotechnology and Pharmaceutical Engineering, Bioenergy Research Institute, Nanjing Tech University, Nanjing, 211816, China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing, 211816, China; Jiangsu Synergetic Innovation Center for Advanced Bio-Manufacture, Nanjing, 211816, China
| | - Xia-Yuan Wu
- College of Biotechnology and Pharmaceutical Engineering, Bioenergy Research Institute, Nanjing Tech University, Nanjing, 211816, China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing, 211816, China; Jiangsu Synergetic Innovation Center for Advanced Bio-Manufacture, Nanjing, 211816, China
| | - Ping Wei
- College of Biotechnology and Pharmaceutical Engineering, Bioenergy Research Institute, Nanjing Tech University, Nanjing, 211816, China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing, 211816, China; Jiangsu Synergetic Innovation Center for Advanced Bio-Manufacture, Nanjing, 211816, China
| | - Hong-Hua Jia
- College of Biotechnology and Pharmaceutical Engineering, Bioenergy Research Institute, Nanjing Tech University, Nanjing, 211816, China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing, 211816, China; Jiangsu Synergetic Innovation Center for Advanced Bio-Manufacture, Nanjing, 211816, China
| | - Xiao-Yu Yong
- College of Biotechnology and Pharmaceutical Engineering, Bioenergy Research Institute, Nanjing Tech University, Nanjing, 211816, China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing, 211816, China; Jiangsu Synergetic Innovation Center for Advanced Bio-Manufacture, Nanjing, 211816, China.
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Souagui S, Djoudi W, Boudries H, Béchet M, Leclère V, Kecha M. Modeling and Statistical Optimization of Culture Conditions for Improvement of Antifungal Compounds Production by Streptomyces albidoflavus S19 Strain of Wastewater Origin. ANTI-INFECTIVE AGENTS 2019; 17:39-49. [PMID: 31328084 PMCID: PMC6596383 DOI: 10.2174/2211352516666180813102424] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/20/2018] [Accepted: 08/08/2018] [Indexed: 01/13/2023]
Abstract
BACKGROUND The actinomycetes strains isolated from unexplored ecosystems are a promising alternative for the biosynthesis of novel antimicrobial compounds. Depending on the interesting antifungal activity of the studied strain S19, the statistical method seems to be an effective tool for optimizing the production of anticandidal molecules. INTRODUCTION This study was conducted in order to optimize the culture parameters (medium nutrients concentrations and initial pH value) affecting the production of antifungal metabolites from S. albidoflavus strain S19 (obtained from wastewater collected in Bejaia region, Algeria) using Response Surface Metho-dology (RSM). The best conditions for anti-Candida albicans compounds biosynthesis were determined. METHODS AND RESULTS The antimicrobial producer strain S. albidoflavus S19 was identified on the basis of morphological, chemicals characters and physiological characteristics along with 16S rRNA gene se-quencing analysis.Response Surface Methodology by Central Composite Design (CCD) was employed to improve the anti-C. albicans agents production through the optimization of medium parameters. The highest antifungal ac-tivity was obtained by using a mixture of 2g l-1 starch, 4g l-1 yeast extract, 2g l-1 peptone at pH 11. CONCLUSION The strain S19 isolated from wastewater showed a significant anti-C. albicans activity and this study revealed the effectiveness of RSM and CCD for increasing bioactive compounds production, rising the diameter of inhibition zones from 13 to 34 mm.
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Affiliation(s)
- S. Souagui
- Address correspondence to this author at the Laboratoire de Microbiologie Appliquée, Département de Microbiologie, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, 06000, Bejaia, Algérie; E-mail:
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Development and characterization of cross-linked enzyme aggregates of thermotolerant alkaline protease from Bacillus licheniformis. Int J Biol Macromol 2018; 113:944-951. [DOI: 10.1016/j.ijbiomac.2018.03.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 02/22/2018] [Accepted: 03/02/2018] [Indexed: 01/30/2023]
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Zafar SB, Asif T, Qader SAU, Aman A. Enhanced biosynthesis of dextransucrase: A multivariate approach to produce a glucosyltransferase for biocatalysis of sucrose into dextran. Int J Biol Macromol 2018; 115:776-785. [PMID: 29680501 DOI: 10.1016/j.ijbiomac.2018.04.089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 04/16/2018] [Accepted: 04/17/2018] [Indexed: 11/27/2022]
Abstract
The current study reported the statistically designed experimental method to enhance the biocatalytic efficacy of dextransucrase from Weissella confusa. Various environmental and nutritional parameters were optimized using multiple responses under submerged fermentation environment. Statistical models were constructed to screen the influence of nine factors on the biocatalysis of dextransucrase. Among them, fermentation time, pH, sucrose and peptone exhibited significant probability (P < 0.05) and are considered as substantial constituents in accordance with Plackett-Burman design. Central composite design was further implemented to optimize the levels of selected variables for maximum enzyme yield. The predicted optimum conditions were pH of 7.5 under fermentation time of 8 h with 30.0 g l-1 sucrose and 1.0 g l-1 peptone. The overall enzyme yield increased from 11.4 DSU ml-1 to 52.75 DSU ml-1 with 4.62-fold upsurge after the implementation of the statistical models. Furthermore, SEM analysis showed the biocatalytic conversion of sucrose into highly porous dextran when utilizing dextransucrase. The biopolymer produced under the current optimized model could be utilized as an emulsifying, gelling, stabilizing and thickening agent in food industry.
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Affiliation(s)
- Syeda Bushra Zafar
- The Karachi Institute of Biotechnology and Genetic Engineering (KIBGE), University of Karachi, Karachi 75270, Pakistan
| | - Tayyaba Asif
- The Karachi Institute of Biotechnology and Genetic Engineering (KIBGE), University of Karachi, Karachi 75270, Pakistan
| | - Shah Ali Ul Qader
- Department of Biochemistry, University of Karachi, Karachi 75270, Pakistan.
| | - Afsheen Aman
- The Karachi Institute of Biotechnology and Genetic Engineering (KIBGE), University of Karachi, Karachi 75270, Pakistan
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Ju Y, Son KH, Jin C, Hwang BS, Park DJ, Kim CJ. Statistical optimization of culture medium for improved production of antimicrobial compound by Streptomyces rimosus AG-P1441. Food Sci Biotechnol 2018; 27:581-590. [PMID: 30263783 PMCID: PMC6049630 DOI: 10.1007/s10068-017-0257-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 10/29/2017] [Accepted: 11/09/2017] [Indexed: 11/25/2022] Open
Abstract
The nutritional requirements for antimicrobial activity of Streptomyces rimosus AG-P1441 were optimized using statistically-based experimental designs at a flask level. Based on a one-factor-at-a-time (OFAT) approach, glucose, corn starch and soybean meal were identified as the carbon and nitrogen sources having a significant effect on antimicrobial productivity. As a result of investigating the effect of glucose concentration, the highest antimicrobial activity was observed at 3% concentration. Response surface methodology (RSM) was then applied to optimize the growth medium components (corn starch, soybean meal, MgCl2 and glutamate). Antimicrobial productivity increased sharply when the medium consisted of 3% glucose, 3.5% corn starch, 2.5% soybean meal, 1.2 mM MgCl2 and 5.9 mM glutamate. The fermentation using optimized culture medium in a 5-L bioreactor allowed a significant increase in antimicrobial activity, evaluated by the paper disc assay, revealed a 29 mm inhibition zone diameter against Phytophthora capsici.
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Affiliation(s)
- Yoonjung Ju
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141 Korea
| | - Kwang-Hee Son
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141 Korea
| | - Chunzhi Jin
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141 Korea
- University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113 Korea
| | - Byung Soon Hwang
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141 Korea
| | - Dong-Jin Park
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141 Korea
| | - Chang-Jin Kim
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141 Korea
- University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113 Korea
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Extracellular cholesterol oxidase production by Streptomyces aegyptia, in vitro anticancer activities against rhabdomyosarcoma, breast cancer cell-lines and in vivo apoptosis. Sci Rep 2018; 8:2706. [PMID: 29426900 PMCID: PMC5807524 DOI: 10.1038/s41598-018-20786-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 01/24/2018] [Indexed: 11/08/2022] Open
Abstract
In recent years, microbial cholesterol oxidases have gained great attention due to its widespread use in medical applications for serum cholesterol determination. Streptomyces aegyptia strain NEAE-102 exhibited high level of extracellular cholesterol oxidase production using a minimum medium containing cholesterol as the sole source of carbon. Fifteen variables were screened using Plackett–Burman design for the enhanced cholesterol oxidase production. The most significant variables affecting enzyme production were further optimized by using the face-centered central composite design. The statistical optimization resulted in an overall 4.97-fold increase (15.631 UmL−1) in cholesterol oxidase production in the optimized medium as compared with the unoptimized medium before applying Plackett Burman design (3.1 UmL−1). The purified cholesterol oxidase was evaluated for its in vitro anticancer activities against five human cancer cell lines. The selectivity index values on rhabdomyosarcoma and breast cancer cell lines were 3.26 and 2.56; respectively. The in vivo anticancer activity of cholesterol oxidase was evaluated against Ehrlich solid tumor model. Compared with control mice, tumors growth was significantly inhibited in the mice injected with cholesterol oxidase alone, doxorubicin alone and cholesterol oxidase/doxorubicin combination by 60.97%, 72.99% and 97.04%; respectively. These results demonstrated that cholesterol oxidase can be used as a promising natural anticancer drug.
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Comparative transcriptomic and proteomic analysis of Arthrobacter sp. CGMCC 3584 responding to dissolved oxygen for cAMP production. Sci Rep 2018; 8:1246. [PMID: 29352122 PMCID: PMC5775200 DOI: 10.1038/s41598-017-18889-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 12/18/2017] [Indexed: 01/09/2023] Open
Abstract
Arthrobacter sp. CGMCC 3584 is able to produce high yields of extracellular cyclic adenosine monophosphate (cAMP), which plays a vital role in the field of treatment of disease and animal food, during aerobic fermentation. However, the molecular basis of cAMP production in Arthrobacter species is rarely explored. Here, for the first time, we report the comparative transcriptomic and proteomic study of Arthrobacter cells to elucidate the higher productivity of cAMP under high oxygen supply. We finally obtained 14.1% and 19.3% of the Arthrobacter genome genes which were up-regulated and down-regulated notably, respectively, with high oxygen supply, and identified 54 differently expressed proteins. Our results revealed that high oxygen supply had two major effects on metabolism: inhibition of glycolysis, pyruvate metabolism, nitrogen metabolism, and amino acid metabolism (histidine, branched-chain amino acids and glutamate metabolism); enhancement of the tricarboxylic acid cycle and purine metabolism. We also found that regulation of adenylate cyclase and phosphodiesterase was not significant under high oxygen supply, suggesting efficient cAMP export might be important in cAMP production. These findings may contribute to further understanding of capacities of Arthrobacter species and would be highly useful in genetic regulation for desirable production.
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You SP, Wang XN, Qi W, Su RX, He ZM. Optimisation of culture conditions and development of a novel fed-batch strategy for high production of β-galactosidase by Kluyveromyces lactis. Int J Food Sci Technol 2017. [DOI: 10.1111/ijfs.13464] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sheng-ping You
- Chemical Engineering Research Center; School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
| | - Xiao-nan Wang
- Chemical Engineering Research Center; School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
| | - Wei Qi
- Chemical Engineering Research Center; School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- State Key Laboratory of Chemical Engineering; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology; Tianjin University; Tianjin 300072 China
| | - Rong-xin Su
- Chemical Engineering Research Center; School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- State Key Laboratory of Chemical Engineering; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology; Tianjin University; Tianjin 300072 China
| | - Zhi-min He
- Chemical Engineering Research Center; School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- State Key Laboratory of Chemical Engineering; Tianjin University; Tianjin 300072 China
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Ali El-Nag NEA, A. Hamouda R. Antimicrobial Potentialities of Streptomyces lienomycini NEAE-31 Against Human Pathogen Multidrug-resistant Pseudomonas aeruginosa. INT J PHARMACOL 2016. [DOI: 10.3923/ijp.2016.769.788] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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El-Naggar NEA, El-Shweihy NM, El-Ewasy SM. Identification and statistical optimization of fermentation conditions for a newly isolated extracellular cholesterol oxidase-producing Streptomyces cavourensis strain NEAE-42. BMC Microbiol 2016; 16:217. [PMID: 27646045 PMCID: PMC5029000 DOI: 10.1186/s12866-016-0830-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 09/06/2016] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Due to broad range of clinical and industrial applications of cholesterol oxidase, isolation and screening of bacterial strains producing extracellular form of cholesterol oxidase is of great importance. RESULTS One hundred and thirty actinomycete isolates were screened for their cholesterol oxidase activity. Among them, a potential culture, strain NEAE-42 is displayed the highest extracellular cholesterol oxidase activity. It was selected and identified as Streptomyces cavourensis strain NEAE-42. The optimization of different process parameters for cholesterol oxidase production by Streptomyces cavourensis strain NEAE-42 using Plackett-Burman experimental design and response surface methodology was carried out. Fifteen variables were screened using Plackett-Burman experimental design. Cholesterol, initial pH and (NH4)2SO4 were the most significant positive independent variables affecting cholesterol oxidase production. Central composite design was chosen to elucidate the optimal concentrations of the selected process variables on cholesterol oxidase production. It was found that, cholesterol oxidase production by Streptomyces cavourensis strain NEAE-42 after optimization process was 20.521U/mL which is higher than result obtained from the basal medium before screening process using Plackett-Burman (3.31 U/mL) with a fold of increase 6.19. CONCLUSIONS The cholesterol oxidase level production obtained in this study (20.521U/mL) by the statistical method is higher than many of the reported values.
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Affiliation(s)
- Noura El-Ahmady El-Naggar
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, New Borg El-Arab City, Alexandria, 21934 Egypt
| | - Nancy M. El-Shweihy
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, New Borg El-Arab City, Alexandria, 21934 Egypt
| | - Sara M. El-Ewasy
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, New Borg El-Arab City, Alexandria, 21934 Egypt
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Optimization of fermentation conditions for enhancing extracellular production of L-asparaginase, an anti-leukemic agent, by newly isolated Streptomyces brollosae NEAE-115 using solid state fermentation. ANN MICROBIOL 2016. [DOI: 10.1007/s13213-016-1231-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Saha N, Gupta SD. Biogenic Synthesis and Structural Characterization of Polyshaped Gold Nanoparticles Using Leaf Extract of Swertia chirata Along with Process Optimization by Response Surface Methodology (RSM). J CLUST SCI 2016. [DOI: 10.1007/s10876-016-1009-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Liu Q, Huang X, Yang D, Si T, Pan S, Yang F. Yield improvement of exopolysaccharides by screening of the Lactobacillus acidophilus ATCC and optimization of the fermentation and extraction conditions. EXCLI JOURNAL 2016; 15:119-33. [PMID: 27103893 PMCID: PMC4834753 DOI: 10.17179/excli2015-356] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 02/01/2016] [Indexed: 11/18/2022]
Abstract
Exopolysacharides (EPS) produced by Lactobacillus acidophilus play an important role in food processing with its well-recognized antioxidant activity. In this study, a L. acidophilus mutant strain with high-yielding EPS (2.92±0.05 g/L) was screened by chemical mutation (0.2 % diethyl sulfate). Plackett-Burman (PB) design and response surface methodology (RSM) were applied to optimize the EPS fermentation parameters and central composite design (CCD) was used to optimize the EPS extraction parameters. A strain with high-yielding EPS was screened. It was revealed that three parameters (Tween 80, dipotassium hydrogen phosphate and trisodium citrate) had significant influence (P < 0.05) on the EPS yield. The optimal culture conditions for EPS production were: Tween 80 0.6 mL, dipotassium hydrogen phosphate 3.6 g and trisodium citrate 4.1 g (with culture volume of 1 L). In these conditions, the maximum EPS yield was 3.96±0.08 g/L. The optimal extraction conditions analyzed by CCD were: alcohol concentration 70 %, the ratio of material to liquid (M/L ratio) 1:3.6 and the extraction time 31 h. In these conditions, the maximum EPS extraction yield was 1.48±0.23 g/L. It was confirmed by the verification experiments that the EPS yield from L. acidophilus mutant strains reached 5.12±0.73 g/L under the optimized fermentation and extraction conditions, which was 3.8 times higher than that of the control (1.05±0.06 g/L). The results indicated that the strain screening with high-yielding EPS was successful and the optimized fermentation and extraction conditions significantly enhanced EPS yield. It was efficient and industrially promising.
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Affiliation(s)
- Qi Liu
- Department of Biological Engineering, Hubei University Zhixing College, Wuhan 430011, China
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xingjian Huang
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Wuhan, 430070, China
- Colloge of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Dengxiang Yang
- Department of Biological Engineering, Hubei University Zhixing College, Wuhan 430011, China
| | - Tianlei Si
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Siyi Pan
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Wuhan, 430070, China
| | - Fang Yang
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China
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El-Hersh MS, Saber WIA, El-Fadaly HA, Mahmoud MK. Lysine and Glutamic Acids as the End Products of Multi-response of Optimized Fermented Medium by Mucor mucedo KP736529. Pak J Biol Sci 2016; 19:279-288. [PMID: 29023029 DOI: 10.3923/pjbs.2016.279.288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Amino acids are important for living organisms, they acting as crucial for metabolic activities and energy generation, wherein the deficiency in these amino acids cause various physiological defects. OBJECTIVE The aim of this study is to investigate the effect of some nutritional factors on the amino acids production by Mucor mucedo KP736529 during fermentation intervals. METHODOLOGY Mucor mucedo KP736529 was selected according to proteolytic activity. Corn steep liquor and olive cake were used in the fermented medium during Placket-Burman and central composite design to maximize the production of lysine and glutamic acids. RESULTS During the screening by Plackett-Burman design, olive cake and Corn Steep Liquor (CSL) had potential importance for the higher production of amino acids. The individual fractionation of total amino acids showed both lysine and glutamic as the major amino acids associated with the fermentation process. Moreover, the Central Composite Design (CCD) has been adopted to explain the interaction between olive cake and CSL on the production of lysine and glutamic acids. The model recorded significant F-value, with high values of R 2, adjusted R 2 and predicted R 2 for both lysine and glutamic, indicating the validity of the data. Solving equation for maximum production of lysine recorded theoretical levels of olive cake and CSL, being 2.58 and 1.83 g L -1, respectively, with predicting value of lysine at 1.470 μg mL -1, whereas the predicting value of glutamic acid reached 0.805 mg mL -1 at levels of 2.49 and 1.93 g L -1 from olive cake and CSL, respectively. The desirability function (D) showed the actual responses being 1.473±0.009 and 0.801±0.004 μg mL -1 for lysine and glutamic acids, respectively. CONCLUSION The model showed adequate validity to be applied in a large-scale production of both lysine and glutamic acids.
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Affiliation(s)
- Mohammed S El-Hersh
- Microbial Activity Unit, Department of Microbiology, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt
| | - WesamEldin I A Saber
- Microbial Activity Unit, Department of Microbiology, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt
| | - Husain A El-Fadaly
- Department of Microbiology, Faculty of Agriculture, Damietta University, Damietta, Egypt
| | - Mohammed K Mahmoud
- Microbial Activity Unit, Department of Microbiology, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt
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El-Naggar NEA. Isolation, Screening and Identification of Actinobacteria with Uricase Activity: Statistical Optimization of Fermentation Conditions for Improved Production of Uricase by Streptomyces rochei NEAE-25. INT J PHARMACOL 2015. [DOI: 10.3923/ijp.2015.644.658] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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41
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Patil SS, Jena HM. Statistical Optimization of Phenol Degradation by Bacillus pumilus OS1 Using Plackett–Burman Design and Response Surface Methodology. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2015. [DOI: 10.1007/s13369-015-1765-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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42
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Optimization of antifungal production by an alkaliphilic and halotolerant actinomycete, Streptomyces sp. SY-BS5, using response surface methodology. J Mycol Med 2015; 25:108-15. [PMID: 25703134 DOI: 10.1016/j.mycmed.2014.12.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 12/20/2014] [Accepted: 12/31/2014] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Optimization of medium components and physicochemical parameters for antifungal production by an alkaliphilic and salt-tolerant actinomycete designated Streptomyces sp. SY-BS5; isolated from an arid region in south of Algeria. MATERIALS AND METHODS The strain showed broad-spectrum activity against pathogenic and toxinogenic fungi. Identification of the actinomycete strain was realized on the basis of 16S rRNA gene sequencing. Antifungal production was optimized following one-factor-at-a-time (OFAT) and response surface methodology (RSM) approaches. The most suitable medium for growth and antifungal production was found using one-factor-at-a-time methodology. The individual and interaction effects of three nutritional variables, carbon source (glucose), nitrogen source (yeast extract) and sodium chloride (NaCl) were optimized by Box-Behnken design. Finally, culture conditions for the antifungal production, pH and temperature were studied and determined. RESULTS Analysis of the 16S rRNA gene sequence (1454 nucleotides) assigned this strain to Streptomyces genus with 99% similarity with Streptomyces cyaneofuscatus JCM4364(T), the most closely related. The results of the optimization study show that concentrations 3.476g/L of glucose, 3.876g/L of yeast extract and 41.140g/L of NaCl are responsible for the enhancement of antifungal production by Streptomyces sp. SY-BS5. The preferable culture conditions for antifungal production were pH 10, temperature 30°C for 09 days. CONCLUSION This study proved that RSM is usual and powerful tool for the optimization of antifungal production from actinomycetes.
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Trawczyńska I, Wójcik M. Optimization of permeabilization process of yeast cells for catalase activity using response surface methodology. BIOTECHNOL BIOTEC EQ 2015; 29:72-77. [PMID: 26019618 PMCID: PMC4434045 DOI: 10.1080/13102818.2014.934986] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 01/20/2014] [Indexed: 11/25/2022] Open
Abstract
Biotransformation processes accompanied by whole yeast cells as biocatalyst are a promising area of food industry. Among the chemical sanitizers currently used in food technology, hydrogen peroxide is a very effective microbicidal and bleaching agent. In this paper, permeabilization has been applied to Saccharomyces cerevisiae yeast cells aiming at increased intracellular catalase activity for decomposed H2O2. Ethanol, which is non-toxic, biodegradable and easily available, has been used as permeabilization factor. Response surface methodology (RSM) has been applied in determining the influence of different parameters on permeabilization process. The aim of the study was to find such values of the process parameters that would yield maximum activity of catalase during decomposition of hydrogen peroxide. The optimum operating conditions for permeabilization process obtained by RSM were as follows: 53% (v/v) of ethanol concentration, temperature of 14.8 °C and treatment time of 40 min. After permeabilization, the activity of catalase increased ca. 40 times and its maximum value equalled to 4711 U/g.
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Affiliation(s)
- Ilona Trawczyńska
- Department of Chemical and Biochemical Engineering, Faculty of Chemical Technology and Engineering, University of Technology and Life Sciences , Bydgoszcz , Poland
| | - Marek Wójcik
- Department of Chemical and Biochemical Engineering, Faculty of Chemical Technology and Engineering, University of Technology and Life Sciences , Bydgoszcz , Poland
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Siddique S, Nelofer R, Syed Q, Adnan A, Qureshi FA. Optimization for the enhanced production of avermectin B1b from Streptomyces avermitilis DSM 41445 using artificial neural network. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s13765-014-4194-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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45
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Jiapeng T, Yiting L, Li Z. Optimization of fermentation conditions and purification of cordycepin from Cordyceps militaris. Prep Biochem Biotechnol 2014; 44:90-106. [PMID: 24117155 DOI: 10.1080/10826068.2013.833111] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The fermentation medium and conditions for the production of cordycepin were optimized in static culture using single-factor experiments, Placket-Burman design, a central composite design, and response surface methodology. Among seven variables including temperature, pH, and the concentrations of glucose, tryptone, yeast extract, KH₂PO₄, and MgSO₄ · 7H₂O, temperature and the concentrations of yeast extract and tryptone were found to be the important factors that significantly affected cordycepin production. The optimized medium consisted of yeast extract 9.00 g/L and tryptone 17.10 g/L, while the optimized culture conditions consisted of seed age 3 days, with an inoculum size of 10% and incubation temperature of 27.1°C. A maximum cordycepin yield of 7.35 g/L was achieved in a 5-L fermenter under the optimized conditions. Next, cordycepin was partially purified and determined. The resulting product showed 90.54% high-performance liquid chromatography (HPLC)-ultraviolet (UV) purity. Therefore, cordycepin was applied to a cell viability assay on SH-SY5Y cells and RM-1 cells. Cordycepin can inhibit the proliferation of RM-1 cells with IC₅₀ of 133 µmol/L, but it has no inhibitory effect on SH-SY5Y cells. Supplemental materials are available for this article.
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Affiliation(s)
- Tang Jiapeng
- a Department of Biochemistry and Pharmacy , Institute of Nautical Medicine, Nantong University , Nantong , P. R. China
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Application of statistical experimental design for optimization of silver nanoparticles biosynthesis by a nanofactory Streptomyces viridochromogenes. J Microbiol 2014; 52:53-63. [PMID: 24390838 DOI: 10.1007/s12275-014-3410-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 09/02/2013] [Accepted: 09/03/2013] [Indexed: 10/25/2022]
Abstract
Central composite design was chosen to determine the combined effects of four process variables (AgNO3 concentration, incubation period, pH level and inoculum size) on the extracellular biosynthesis of silver nanoparticles (AgNPs) by Streptomyces viridochromogenes. Statistical analysis of the results showed that incubation period, initial pH level and inoculum size had significant effects (P<0.05) on the biosynthesis of silver nanoparticles at their individual level. The maximum biosynthesis of silver nanoparticles was achieved at a concentration of 0.5% (v/v) of 1 mM AgNO3, incubation period of 96 h, initial pH of 9 and inoculum size of 2% (v/v). After optimization, the biosynthesis of silver nanoparticles was improved by approximately 5-fold as compared to that of the unoptimized conditions. The synthetic process of silver nanoparticle generation using the reduction of aqueous Ag+ ion by the culture supernatants of S. viridochromogenes was quite fast, and silver nanoparticles were formed immediately by the addition of AgNO3 solution (1 mM) to the cell-free supernatant. Initial characterization of silver nanoparticles was performed by visual observation of color change from yellow to intense brown color. UV-visible spectrophotometry for measuring surface plasmon resonance showed a single absorption peak at 400 nm, which confirmed the presence of silver nanoparticles. Fourier Transform Infrared Spectroscopy analysis provided evidence for proteins as possible reducing and capping agents for stabilizing the nanoparticles. Transmission Electron Microscopy revealed the extracellular formation of spherical silver nanoparticles in the size range of 2.15-7.27 nm. Compared to the cell-free supernatant, the biosynthesized AgNPs revealed superior antimicrobial activity against Gram-negative, Gram-positive bacterial strains and Candida albicans.
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El-Ahmady N, A. El-Bind A, Salah Nour N. Production of Antimicrobial Agent Inhibitory to some Human Pathogenic Multidrug-Resistant
Bacteria and Candida albicans by Streptomyces sp. NEAE-1. INT J PHARMACOL 2013. [DOI: 10.3923/ijp.2013.335.347] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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El-Naggar NEA, El-Bindary AA, Nour NS. Statistical Optimization of Process Variables for Antimicrobial Metabolites Production by Streptomyces anulatus NEAE-94 Against some Multidrug-resistant Strains. INT J PHARMACOL 2013. [DOI: 10.3923/ijp.2013.322.334] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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49
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Statistical optimization of a multivariate fermentation process for enhancing antibiotic activity of Streptomyces sp. CS392. Arch Pharm Res 2013; 36:973-80. [DOI: 10.1007/s12272-013-0140-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Accepted: 04/23/2013] [Indexed: 10/26/2022]
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50
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Production of cyclic adenosine-3′,5′-monophosphate by whole cell catalysis using recombinant Escherichia coli overexpressing adenylate cyclase. KOREAN J CHEM ENG 2013. [DOI: 10.1007/s11814-012-0202-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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