1
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Sahu N, Mahanty B, Haldar D. Challenges and opportunities in bioprocessing of gellan gum: A review. Int J Biol Macromol 2024; 276:133912. [PMID: 39025193 DOI: 10.1016/j.ijbiomac.2024.133912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/26/2024] [Accepted: 07/14/2024] [Indexed: 07/20/2024]
Abstract
Gellan gum (GG) - the microbial exopolysaccharide is increasingly being adopted into drug development, tissue engineering, and food and pharmaceutical products. In spite of the commercial importance and expanding application horizon of GG, little attention has been directed toward the exploration of novel microbial cultures, development of advanced screening protocols, strain engineering, and robust upstream or downstream processes. This comprehensive review not only attempts to summarize the existing knowledge pool on GG bioprocess but also critically assesses their inherent challenges. The process optimization design augmented with advanced machine learning modeling tools, widely adopted in other microbial bioprocesses, should be extended to GG. The unification of mechanistic insight into data-driven modeling would help to formulate optimal feeding and process control strategies.
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Affiliation(s)
- Nageswar Sahu
- Division of Biotechnology, School of Agricultural Sciences, Karunya Institute of Technology and Sciences, Coimbatore 641114, Tamil Nadu, India.
| | - Biswanath Mahanty
- Division of Biotechnology, School of Agricultural Sciences, Karunya Institute of Technology and Sciences, Coimbatore 641114, Tamil Nadu, India.
| | - Dibyajyoti Haldar
- Division of Biotechnology, School of Agricultural Sciences, Karunya Institute of Technology and Sciences, Coimbatore 641114, Tamil Nadu, India.
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2
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Dev MJ, Mahajan GB, Warke RG, Warke GM, Patil TA, Satardekar MR, Dalvi RC, Singhal RS. Mutagenesis enhances gellan gum production by a novel Sphingomonas spp.: upstream optimization, kinetic modeling, and structural and physico-functional evaluation. Int Microbiol 2024; 27:459-476. [PMID: 37495894 DOI: 10.1007/s10123-023-00399-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 06/11/2023] [Accepted: 07/07/2023] [Indexed: 07/28/2023]
Abstract
Gellan gum (GG) has gained tremendous attention owing to its diversified applications. However, its high production and hence market cost are still a bottleneck in its widespread utilization. In the present study, high GG producing mutant of Sphingomonas spp. was developed by random mutagenesis using ethyl methylsulphonate (EMS) for industrial fermentation and identified as Sphingomonas trueperi after 16S rRNA and matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF-MS) analysis. The fermentation conditions such as pH, temperature, and inoculum ratio were optimized by one factor at a time (OFAT) followed by screening of medium components by the Plackett-Burman statistical design. The most critical nutrients were further optimized by response surface methodology for maximizing GG production. The effect of dissolved oxygen tension in bioreactor on cell growth, substrate consumption, GG production, and batch productivity was elucidated. The highest GG titer (23 ± 2.4 g/L) was attained in optimized medium at 10% inoculum (6.45 ± 0.5 log cfu/mL) under controlled fermentation conditions of pH (7), temperature (30 °C), agitation (300-600 rpm), and aeration (0.5-2.0 SLPM) at 22 ± 2% dissolved oxygen tension in a 10-L bioreactor. Kinetic modeling of optimized batch process revealed that logistic growth model could best explain biomass accumulation, while GG formation and substrate consumption were best explained by Luedeking-Piret and exponential decay model, respectively. Structural and physico-functional features of GG produced by mutant Sphingomonas spp. were characterized by HPLC, FTIR, NMR, DSC, TGA, GPC, SEM, and rheological analysis. The higher productivity (0.51 g/L/h) under optimized fermentation conditions suggests potential consideration of mutant and process for commercial utilization.
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Affiliation(s)
- Manoj J Dev
- Food Engineering and Technology Department, Institute of Chemical Technology, Mumbai, 400019, India
- Department of Microbiology, HiMedia Laboratories Pvt. Ltd, Mumbai, India
| | - Girish B Mahajan
- Department of Microbiology, HiMedia Laboratories Pvt. Ltd, Mumbai, India
| | - Rahul G Warke
- Department of Microbiology, HiMedia Laboratories Pvt. Ltd, Mumbai, India
| | - Gangadhar M Warke
- Department of Microbiology, HiMedia Laboratories Pvt. Ltd, Mumbai, India
| | - Tanuja A Patil
- Department of Microbiology, HiMedia Laboratories Pvt. Ltd, Mumbai, India
| | - Milan R Satardekar
- Department of Microbiology, HiMedia Laboratories Pvt. Ltd, Mumbai, India
| | - Rachana C Dalvi
- Department of Microbiology, HiMedia Laboratories Pvt. Ltd, Mumbai, India
| | - Rekha S Singhal
- Food Engineering and Technology Department, Institute of Chemical Technology, Mumbai, 400019, India.
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3
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Dev MJ, Warke RG, Warke GM, Mahajan GB, Patil TA, Singhal RS. Advances in fermentative production, purification, characterization and applications of gellan gum. BIORESOURCE TECHNOLOGY 2022; 359:127498. [PMID: 35724911 DOI: 10.1016/j.biortech.2022.127498] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/11/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Multiple microbial exopolysaccharides have been reported in recent decade with their structural and functional features. Gellan gum (GG) is among these emerging biopolymers with versatile properties. Low production yield, high downstream cost, and abundant market demand have made GG a high cost material. Hence, an understanding on the various possibilities to develop cost-effective gellan gum bioprocess is desirable. This review focuses on details of upstream and downstream process of GG from an industrial perspective. It emphasizes on GG producing Sphingomonas spp., updates on biosynthesis, strain and media engineering, kinetic modeling, bioreactor design and scale-up considerations. Details of the downstream operations with possible modifications to make it cost-effective and environmentally sustainable have been discussed. The updated regulatory criteria for GG as a food ingredient and analytical tools required to validate the same have been briefly discussed. Derivatives of GG and their applications in various industrial segments have also been highlighted.
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Affiliation(s)
- Manoj J Dev
- Food Engineering and Technology Department, Institute of Chemical Technology, Mumbai, India
| | - Rahul G Warke
- Microbiology Division, Hi-Media Laboratories Pvt. Ltd., Mumbai, India
| | - Gangadhar M Warke
- Microbiology Division, Hi-Media Laboratories Pvt. Ltd., Mumbai, India
| | - Girish B Mahajan
- Microbiology Division, Hi-Media Laboratories Pvt. Ltd., Mumbai, India
| | - Tanuja A Patil
- Microbiology Division, Hi-Media Laboratories Pvt. Ltd., Mumbai, India
| | - Rekha S Singhal
- Food Engineering and Technology Department, Institute of Chemical Technology, Mumbai, India.
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Niknezhad SV, Kianpour S, Jafarzadeh S, Alishahi M, Najafpour Darzi G, Morowvat MH, Ghasemi Y, Shavandi A. Biosynthesis of exopolysaccharide from waste molasses using Pantoea sp. BCCS 001 GH: a kinetic and optimization study. Sci Rep 2022; 12:10128. [PMID: 35710936 PMCID: PMC9203581 DOI: 10.1038/s41598-022-14417-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 06/07/2022] [Indexed: 11/08/2022] Open
Abstract
The bacterium Pantoea sp. BCCS 001 GH produces an exopolysaccharide (EPS) named Pantoan through using sugar beet molasses (SBM) as an inexpensive and widely available carbon source. This study aims to investigate the kinetics and optimization of the Pantoan biosynthesis using Pantoea sp. BCCS 001 GH in submerged culture. During kinetics studies, the logistic model and Luedeking-Piret equation are precisely fit with the obtained experimental data. The response surface methodology (RSM)-central composite design (CCD) method is applied to evaluate the effects of four factors (SBM, peptone, Na2HPO4, and Triton X-100) on the concentration of Pantoan in batch culture of Pantoea sp. BCCS 001 GH. The experimental and predicted maximum Pantoan production yields are found 9.9 ± 0.5 and 10.30 g/L, respectively, and the best prediction factor concentrations are achieved at 31.5 g/L SBM, 2.73 g/L peptone, 3 g/L Na2HPO4, and 0.32 g/L Triton X-100 after 48 h of submerged culture fermentation, at 30 °C. The functional groups and major monosaccharides (glucose and galactose) of a purified Pantoan are described and confirmed by 1HNMR and FTIR. The produced Pantoan is also characterized by thermogravimetric analysis and the rheological properties of the biopolymer are investigated. The present work guides the design and optimization of the Pantoea sp. BCCS 001 GH culture media, to be fine-tuned and applied to invaluable EPS, which can be applicable in food and biotechnology applications.
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Affiliation(s)
- Seyyed Vahid Niknezhad
- Burn and Wound Healing Research Center, Shiraz University of Medical Sciences, Shiraz, 71987-54361, Iran
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, P.O. Box 71468-64685, Shiraz, Iran
| | - Sedigheh Kianpour
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, P.O. Box 71468-64685, Shiraz, Iran
| | - Sina Jafarzadeh
- Department of Energy Conversion and Storage, Technical University of Denmark, Fysikvej, 2800 Kgs, Lyngby, Denmark
| | - Mohsen Alishahi
- Burn and Wound Healing Research Center, Shiraz University of Medical Sciences, Shiraz, 71987-54361, Iran
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, P.O. Box 71468-64685, Shiraz, Iran
| | - Ghasem Najafpour Darzi
- Department of Chemical Engineering, Faculty of Engineering, Noshirvani University of Technology, Babol, Iran
| | - Mohammad Hossein Morowvat
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, P.O. Box 71468-64685, Shiraz, Iran.
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, P.O. Box 71468-64685, Shiraz, Iran.
| | - Younes Ghasemi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, P.O. Box 71468-64685, Shiraz, Iran.
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, P.O. Box 71468-64685, Shiraz, Iran.
| | - Amin Shavandi
- Université Libre de Bruxelles (ULB), École Polytechnique de Bruxelles-BioMatter Unit, Avenue F. D. Roosevelt, 50-CP 165/61, 1050, Brussels, Belgium
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Dee Tan IY, Bautista MAM. Bacterial Survey in the Guts of Domestic Silkworms, Bombyx mori L. INSECTS 2022; 13:100. [PMID: 35055946 PMCID: PMC8779307 DOI: 10.3390/insects13010100] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/13/2022] [Accepted: 01/14/2022] [Indexed: 02/06/2023]
Abstract
Silkworm, Bombyx mori L., research involves studies on improving strains for enhanced sustainability of high-quality silk production. Several of these have investigated the factors affecting growth and development of silkworm larvae and cocoon characteristics that subsequently affect the yield and quality of silk. The gut microbiota has been reported to impact growth and development of silkworms and has been linked, in particular, with absorption and utilization of nutrients and immunity to diseases. The silkworm strains maintained in the Philippines lack sufficient biological data for use in strain improvement. This prompted efforts to augment the data by profiling bacterial communities through high-throughput 16S rRNA gene amplicon sequencing and analysis in four of the local silkworm strains that are bred and maintained in the country. Results of the study showed that the four silkworm strains are abundant in bacteria that belong to the genera Pseudomonas, Sphingomonas, Delftia, Methylobacterium and Acinetobacter. Results also showed that bacterial diversity and evenness increase as larvae mature, which can be correlated to larval development and shifts in the amount and age of mulberry leaves the larvae consume.
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Affiliation(s)
- Ivan Y. Dee Tan
- Research and Development Division, Philippine Textile Research Institute, Department of Science and Technology, Bicutan, Taguig City 1631, Philippines;
- National Institute of Molecular Biology and Biotechnology, University of the Philippines—Diliman, Quezon City 1101, Philippines
| | - Ma. Anita M. Bautista
- National Institute of Molecular Biology and Biotechnology, University of the Philippines—Diliman, Quezon City 1101, Philippines
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6
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Mohsin A, Akyliyaevna KA, Zaman WQ, Hussain MH, Mohsin MZ, Al-Rashed S, Tan X, Tian X, Aida K, Tariq M, Haider MS, Khan IM, Niazi S, Zhuang Y, Guo M. Kinetically modelled approach of xanthan production using different carbon sources: A study on molecular weight and rheological properties of xanthan. Int J Biol Macromol 2021; 193:1226-1236. [PMID: 34743029 DOI: 10.1016/j.ijbiomac.2021.10.163] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 10/15/2021] [Accepted: 10/21/2021] [Indexed: 11/15/2022]
Abstract
The present study emphasizes improving the overall yield, productivity and quality of xanthan by Xanthomonas campestris using different carbon sources via optimizing the fermentation media and kinetic modelling work. After optimization, six carbon sources and one nitrogen source were selected for xanthan production in 5 L bioreactor. Kinetic modelling was applied to assess the experimental fermentation data and to check its influence on scale-up production. In this work, xanthan production reached 40.65 g/L with a growth-associated rate constant (α) of 2.831, and highest specific growth rate (μm) of 0.37/h while using maltose as the sole carbon source. Furthermore, rheological properties were determined, and Herschel-Bulkley model was employed to assess the experimental data. Interestingly, xanthan obtained from sucrose and glucose showed the highest yield stress (τ0) of 12.50 ± 0.31 and 7.17 ± 0.21. Moreover, the highest xanthan molecular weight of 3.53 × 107 and 3.25 × 107 g/mol were also found with sucrose and glucose. At last, the proposed mechanism of sugar metabolism and xanthan biosynthesis pathway were described. Conclusively, maltose appeared as the best carbon source for maximum xanthan production: while sucrose and glucose gave qualitatively best results. In short, this systematically modelled approach maximizes the potential output and provides a solid base for continuous cultivation of xanthan at large-scale production.
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Affiliation(s)
- Ali Mohsin
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Kanagat Akbota Akyliyaevna
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China; Department of Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
| | - Waqas Qamar Zaman
- Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan
| | - Muhammad Hammad Hussain
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Muhammad Zubair Mohsin
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Sarah Al-Rashed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O 2455, Riyadh 11451, Saudi Arabia
| | - Xin Tan
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Xiwei Tian
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Kistaubayeva Aida
- Department of Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
| | - Muhammad Tariq
- Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS), Suzhou 215123, China
| | - Muhammad Salman Haider
- Applied Science Research Institute, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea; Department of Chemical Engineering, University of Gujrat, HH Campus, 50700 Gujrat, Pakistan
| | - Imran Mahmood Khan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Sobia Niazi
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Yingping Zhuang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Meijin Guo
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
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7
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Kumar A, Kumari P, Gupta K, Singh M, Tomer V. Recent Advances in Extraction, Techno-functional Properties, Food and Therapeutic Applications as Well as Safety Aspects of Natural and Modified Stabilizers. FOOD REVIEWS INTERNATIONAL 2021. [DOI: 10.1080/87559129.2021.1950174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ashwani Kumar
- Department of Food Technology and Nutrition, Lovely Professional University, Phagwara, India
| | - Pooja Kumari
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Kritika Gupta
- Department of Nutrition and Hospitality Management, University of Mississippi, Oxford, USA
| | - Manjot Singh
- Department of Food Technology and Nutrition, Lovely Professional University, Phagwara, India
| | - Vidisha Tomer
- VIT School of Agricultural Innovations and Advanced Learning, Vellore Institute of Technology, Vellore, India
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Cui L, Guo Q, Wang X, Duffy KJ, Dai X. Midgut bacterial diversity of a leaf-mining beetle, Dactylispa xanthospila (Gestro) (Coleoptera: Chrysomelidae: Cassidinae). Biodivers Data J 2021; 9:e62843. [PMID: 34012315 PMCID: PMC8128845 DOI: 10.3897/bdj.9.e62843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 04/28/2021] [Indexed: 01/04/2023] Open
Abstract
Microorganisms play an essential role in the growth and development of numerous insect species. In this study, the total DNA from the midgut of adults of Dactylispaxanthospila were isolated and bacterial 16S rRNA sequenced using the high-throughput Illumina MiSeq platform. Then, the composition and diversity of the midgut bacterial community were analysed with QIIME2. The results showed the midgut bacteria of D.xanthospila belong to 30 phyla, 64 classes, 135 orders, 207 families and 369 genera. At the phylum level, Proteobacteria, Bacteroidetes and Firmicutes were the dominant bacteria, accounting for 91.95%, 3.44% and 2.53%, respectively. The top five families are Enterobacteriaceae (69.51%), Caulobacteraceae (5.24%), Rhizobiaceae (4.61%), Sphingomonadaceae (4.23%) and Comamonadaceae (2.67%). The bacterial community's primary functions are carbohydrate metabolism, amino acid metabolism and cofactor and vitamin metabolism, which are important for the nutritional requirements of plant-feeding insects.
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Affiliation(s)
- Lixing Cui
- Leafminer Group, School of Life Sciences, Gannan Normal University, Ganzhou, China Leafminer Group, School of Life Sciences, Gannan Normal University Ganzhou China
| | - Qingyun Guo
- Leafminer Group, School of Life Sciences, Gannan Normal University, Ganzhou, China Leafminer Group, School of Life Sciences, Gannan Normal University Ganzhou China
| | - Xuexiong Wang
- Leafminer Group, School of Life Sciences, Gannan Normal University, Ganzhou, China Leafminer Group, School of Life Sciences, Gannan Normal University Ganzhou China
| | - Kevin Jan Duffy
- Institute of Systems Science, Durban University of Technology, Durban, South Africa Institute of Systems Science, Durban University of Technology Durban South Africa
| | - Xiaohua Dai
- Leafminer Group, School of Life Sciences, Gannan Normal University, Ganzhou, China Leafminer Group, School of Life Sciences, Gannan Normal University Ganzhou China.,National Navel-Orange Engineering Research Center, Ganzhou, China National Navel-Orange Engineering Research Center Ganzhou China
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9
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Altan Kamer DD, Gumus T, Palabiyik I, Demirci AS, Oksuz O. Grape pomace as a promising source for gellan gum production. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Synthesis of the Microbial Polysaccharide Gellan from Dairy and Plant-Based Processing Coproducts. POLYSACCHARIDES 2021. [DOI: 10.3390/polysaccharides2020016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This review examines the production of the microbial polysaccharide gellan, synthesized by Sphingomonas elodea, on dairy and plant-based processing coproducts. Gellan is a water-soluble gum that structurally exists as a tetrasaccharide comprised of 20% glucuronic acid, 60% glucose and 20% rhamnose, for which various food, non-food and biomedical applications have been reported. A number of carbon and nitrogen sources have been tested to determine whether they can support bacterial gellan production, with several studies attempting to optimize gellan production by varying the culture conditions. The genetics of the biosynthesis of gellan has been explored in a number of investigations and specific genes have been identified that encode the enzymes responsible for the synthesis of this polysaccharide. Genetic mutants exhibiting overproduction of gellan have also been identified and characterized. Several dairy and plant-based processing coproducts have been screened to learn whether they can support the production of gellan in an attempt to lower the cost of synthesizing the microbial polysaccharide. Of the processing coproducts explored, soluble starch as a carbon source supported the highest gellan production by S. elodea grown at 30 °C. The corn processing coproducts corn steep liquor or condensed distillers solubles appear to be effective nitrogen sources for gellan production. It was concluded that further research on producing gellan using a combination of processing coproducts could be an effective solution in lowering its overall production costs.
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Production of bacterial cellulose using Gluconacetobacter kombuchae immobilized on Luffa aegyptiaca support. Sci Rep 2021; 11:2912. [PMID: 33536530 PMCID: PMC7858635 DOI: 10.1038/s41598-021-82596-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 01/20/2021] [Indexed: 01/30/2023] Open
Abstract
The present work report for the first time on the production of bacterial cellulose (BC) using natural loofa sponge (Luffa aegyptiaca) as a scaffold for the immobilization of Gluconacetobacter kombuchae. Bacterial cellulose (BC) are recently gained more attention in several fields including biological and biomedical applications due to their outstanding physico-chemical characteristics including high thermal stability, easy biodegradability, good water holding capacity, high tensile strength, and high degree of polymerization. The increase in requirement of alternative method for the enhancement of BC production under economical aspect develops a positive impact in large scale industries. In this study, Luffa aegyptiaca (LA) was introduced in a separate fermentation medium so as to enhance the concentration of BC production by Gluconacetobacter kombuchae. Different process/medium parameters such as initial pH, static/shaking condition, inoculum size, nitrogen source, C/N ratio, supplements (ethanol and acetic acid) were analysed for the production of bacterial cellulose using LA support. The maximum yield of BC was obtained using following condition: culturing condition -shaking; initial pH - 5.5; nitrogen source- yeast extract, C/N ratio - 40 and supplement-ethanol. The characterization of the BC was examined using Fourier Transform Infra-Red spectroscopy and thermo gravimetric analysis. The biofilm formation on the surface of LA was examined by SEM photographs. Thus, implementation of LA as a support in shaking fermentation under suitable medium/process variables enhanced the BC production.
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Wang D, Kim H, Lee S, Kim DH, Joe MH. Improved gellan gum production by a newly-isolated Sphingomonas azotifigens GL-1 in a cheese whey and molasses based medium. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.02.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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13
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Tabernero A, Cardea S. Supercritical carbon dioxide techniques for processing microbial exopolysaccharides used in biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 112:110940. [PMID: 32409086 DOI: 10.1016/j.msec.2020.110940] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 03/24/2020] [Accepted: 04/06/2020] [Indexed: 12/14/2022]
Abstract
Microbial exopolysaccharides are polymers that show a great potential for biomedical applications, such as tissue engineering applications and drug delivery, due to their biocompatibility, biodegradability and their gelling properties. These polysaccharides are obtained from a microorganism culture with a relatively straightforward downstream process thanks to their extracellular character, and can be processed to obtain aerogels, fibers and micro- or nano-particles with conventional techniques. However, these techniques present several disadvantages in that they involve time-consuming processes and the use of toxic solvents. Supercritical carbon dioxide techniques can overcome these drawbacks, but their use for processing microbial exopolysaccharides is not extended in the scientific community. This review describes the most frequently used exopolysaccharides in biomedical applications and how they can be obtained, as well as the different supercritical carbon dioxide techniques that can be used for processing them and their challenges. Specifically, high pressure shows a great potential to process and sterilize exopolysaccharide biomaterials for biomedical applications (e.g. tissue engineering or drug delivery systems) in spite of the disadvantage concerning the hydrophilicity of this type of polymers.
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Affiliation(s)
- Antonio Tabernero
- Department of Chemical Engineering, University of Salamanca, Plaza los Caídos s/n, 37008 Salamanca, SA, Spain
| | - Stefano Cardea
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy.
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14
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Farag MM, Moghannem SA, Shehabeldine AM, Azab MS. Antitumor effect of exopolysaccharide produced by Bacillus mycoides. Microb Pathog 2020; 140:103947. [DOI: 10.1016/j.micpath.2019.103947] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 12/23/2022]
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15
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Almansoory AF, Al-Baldawi IA, Hazaimeh M. Optimization of the EPS production of a bacterial floc consortium using different parameters. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2019.101466] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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16
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Li A, Hu T, Luo H, Alam NU, Xin J, Li H, Lin Y, Huang J, Huang K, Meng Y, Meng F, Hu X, Li O. A Carotenoid- and Poly-β-Hydroxybutyrate-Free Mutant Strain of Sphingomonas elodea ATCC 31461 for the Commercial Production of Gellan. mSphere 2019; 4:e00668-19. [PMID: 31619503 PMCID: PMC6796983 DOI: 10.1128/msphere.00668-19] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 09/25/2019] [Indexed: 12/22/2022] Open
Abstract
Gellan gum is a microbial exopolysaccharide, produced after aerobic fermentation using the Gram-negative bacterium strain Sphingomonas elodea ATCC 31461. Due to its unique structure and excellent physical characteristics, gellan gum has a broad range of applications in food, pharmaceutical, and other industries where it is used for stabilizing, emulsifying, thickening, and suspending. During the fermentative production of gellan, strain ATCC 31461 also accumulates large amounts of the metabolic by-products yellow carotenoid pigments and poly-β-hydroxybutyrate (PHB), which is decreasing the gellan production and increasing processing costs. A pigment PHB-free mutant was obtained by knocking out the phytoene desaturase gene (crtI) in the carotenoid biosynthetic pathway and the phaC gene, encoding a PHB synthase for the polymerization of PHB. Unfortunately, the double gene knockout mutant produced only 0.56 g liter-1 gellan. Furthermore, blocking PHB and carotenoid synthesis resulted in the accumulation of pyruvate, which reduced gellan production. To elevate gellan production, combined UV irradiation and ethyl methanesulfonate (EMS) mutagenesis treatment were used. A mutant strain with the same level of pyruvate as that of the wild-type strain and higher gellan production was isolated (1.35 g liter-1, 132.8% higher than the double gene knockout mutant and 14.4% higher than the wild-type strain ATCC 31461). In addition, a new gellan gum recovery method based on the new mutant strain was investigated, in which only 30% isopropanol was required, which is twice for the wild-type strains, and the performance of the final product was improved. Thus, the mutant strain could be an ideal strain for the commercial production of gellan.IMPORTANCE A carotenoid- and PHB-free double gene knockout strain mutant was constructed to simplify the purification steps normally involved in gellan production. However, the production of gellan gum was unexpectedly reduced. A mutant with 14.4% higher gellan production than that of the wild-type strain was obtained and isolated after employing UV and EMS combined mutagenesis. Based on this high-yield and low-impurity-producing mutant, a new recovery method requiring less organic solvent and fewer operating steps was developed. This method will effectively reduce the production costs and improve the economic benefits of large-scale gellan production.
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Affiliation(s)
- Ang Li
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Tingting Hu
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Hangqi Luo
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Nafee-Ul Alam
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Jiaqi Xin
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Hongwei Li
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yinuo Lin
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Jingyu Huang
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Ke Huang
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yuan Meng
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Fenbin Meng
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xiufang Hu
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Ou Li
- College of Life Science and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
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De Bhowmick G, Sen R, Sarmah AK. Analysis of growth and intracellular product synthesis dynamics of a microalga cultivated in wastewater cocktail as medium. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.107253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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18
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Zhu R, Gao X, Xiao Y, Yang N, Jin Y. Improved performance in γ-polyglutamic acid production by Bacillus subtilis LX on industrial scale by impeller retrofitting and its unstructured microbial growth kinetics model. Prep Biochem Biotechnol 2019; 49:307-314. [DOI: 10.1080/10826068.2018.1541810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ruiyan Zhu
- Applied Chemistry Key Lab of Hebei Province, Yanshan University, Qinhuangdao, China
| | - Xiaojia Gao
- Agricultural Biotechnology Key Lab of Hebei Province, Leading Bio-agriculture Co. Ltd, Qinhuangdao, China
| | - Yan Xiao
- Agricultural Biotechnology Key Lab of Hebei Province, Leading Bio-agriculture Co. Ltd, Qinhuangdao, China
| | - Na Yang
- Agricultural Biotechnology Key Lab of Hebei Province, Leading Bio-agriculture Co. Ltd, Qinhuangdao, China
| | - Yangzhuoyue Jin
- Applied Chemistry Key Lab of Hebei Province, Yanshan University, Qinhuangdao, China
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19
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Hakeem K, Darwish A, Al-Bar OM, Yousef R, Moselhy S, Ahmed Y. Production of antioxidant exopolysaccharide from Pseudomonas aeruginosa utilizing heavy oil as a solo carbon source. Pharmacognosy Res 2019. [DOI: 10.4103/pr.pr_40_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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20
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Mohsin A, Zhang K, Hu J, Salim-ur-Rehman, Tariq M, Zaman WQ, Khan IM, Zhuang Y, Guo M. Optimized biosynthesis of xanthan via effective valorization of orange peels using response surface methodology: A kinetic model approach. Carbohydr Polym 2018; 181:793-800. [DOI: 10.1016/j.carbpol.2017.11.076] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/24/2017] [Accepted: 11/20/2017] [Indexed: 11/24/2022]
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21
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Raghunandan K, Kumar A, Kumar S, Permaul K, Singh S. Production of gellan gum, an exopolysaccharide, from biodiesel-derived waste glycerol by Sphingomonas spp. 3 Biotech 2018; 8:71. [PMID: 29354382 PMCID: PMC5766450 DOI: 10.1007/s13205-018-1096-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 01/04/2018] [Indexed: 10/18/2022] Open
Abstract
In the present study, biodiesel-derived waste glycerol (WG) was used for the isolation and production of gellan, an exopolysaccharide, on media containing WG as the main carbon source. Two bacterial isolates showed gellan producing potential which were identified as Sphingomonas pseudosanguinis (Accession No. GI:724472387) and Sphingomonas yabuuchiae (GI:724472388) by 16S rRNA gene sequencing. To maximize gellan production by S. pseudosanguinis and S. yabuuchiae, media optimization was performed at different pHs and glycerol concentrations. Morphological observations through microscopic images showed the production of gellan from these isolates. Simple linear regression showed better utilization of WG by S. pseudosanguinis than S. yabuuchiae at pH 6 and pH 7. Though, both the strains showed reverse trend at pH 8. Both the strains were able to produce high amounts of gellan gum (51.6 and 52.6 g/l, respectively) using WG (80 g/l) as the sole carbon source, in a minimal medium. This is the first report on the efficient degradation of WG and low-cost production of gellan. Owing to these characteristics, S. pseudosanguinis and S. yabuuchiae demonstrate great potential for use in the commercial production of gellan and in the bioremediation of WG.
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Affiliation(s)
- Kerisha Raghunandan
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, Durban, 4001 South Africa
| | - Ashwani Kumar
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, Durban, 4001 South Africa
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour University (Central University), Sagar, MP 470003 India
| | - Santhosh Kumar
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, Durban, 4001 South Africa
| | - Kugenthiren Permaul
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, Durban, 4001 South Africa
| | - Suren Singh
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, Durban, 4001 South Africa
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22
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Development of Kinetic Model for Xanthan Production in a Laboratory-Scale Batch Fermentor. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY, TRANSACTIONS A: SCIENCE 2017. [DOI: 10.1007/s40995-017-0343-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Bioconversion of Welan Gum from Kitchen Waste by a Two-Step Enzymatic Hydrolysis Pretreatment. Appl Biochem Biotechnol 2017; 183:820-832. [PMID: 28365855 DOI: 10.1007/s12010-017-2466-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Accepted: 03/22/2017] [Indexed: 12/26/2022]
Abstract
Kitchen waste (KW) is a worldwide issue, which can lead to environment pollution. Nevertheless, it is also a low-cost and sustainable resource for bio-production. Meanwhile, welan gum (WG) is one kind of the most important exopolysaccharide but with high material cost. The aim of this study was to adopt two-step enzymatic hydrolysis to improve the release and recovery of both sugar and protein in KW for subsequent WG production. As the results, the recovery rates of sugar and protein reached 81.07 and 77.38%, which were both satisfactory. After the conditions optimized in flasks, the welan fermentation was conducted in a 5-L fermentor, and the WG yield, utilization rates of reducing sugar and KDN, respectively, reached 5.57 g L-1, 94.25% and 61.96%. Moreover, the kinetic analyses demonstrated that the WG fermentation in KWH was a partly growth-associated process. The KW was successfully treated by fermentation for the bioconversion to WG.
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24
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Li P, Zeng Y, Xie Y, Li X, Kang Y, Wang Y, Xie T, Zhang Y. Effect of pretreatment on the enzymatic hydrolysis of kitchen waste for xanthan production. BIORESOURCE TECHNOLOGY 2017; 223:84-90. [PMID: 27788431 DOI: 10.1016/j.biortech.2016.10.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 10/10/2016] [Accepted: 10/13/2016] [Indexed: 06/06/2023]
Abstract
The study was carried out to gain insight into the effect of pretreatment on enzymatic hydrolysis of kitchen waste (KW) for xanthan fermentation. Herein, various pretreatments were applied and it was found that chemical pretreatment had positive effect on the following enzymatic or overall hydrolysis process. The highest reducing sugar concentration was obtained as 51.87g/L from 2% HCl (90°C) pretreated sample, while the Kjeldahl nitrogen (KDN) concentration was 7.79g/L. Kinetic study showed that first order kinetic model was suitable to describe the enzymatic hydrolysis process. The obtained kitchen waste hydrolysate (KWH) was successfully applied for xanthan fermentation. Xanthan concentration reached 4.09-6.46g/L when KWH with 2% HCl (90°C) pretreatment was applied as medium. In comparison, a xanthan concentration of 3.25-5.57g/L was obtained from KWH without pretreatment. Therefore, pretreatment of KW using diluted acid is favorable for the overall hydrolysis process and effective for xanthan fermentation.
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Affiliation(s)
- Panyu Li
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Yu Zeng
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Yi Xie
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Xiang Li
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Yan Kang
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Yabo Wang
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Tonghui Xie
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Yongkui Zhang
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China.
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25
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Li P, Li T, Zeng Y, Li X, Jiang X, Wang Y, Xie T, Zhang Y. Biosynthesis of xanthan gum by Xanthomonas campestris LRELP-1 using kitchen waste as the sole substrate. Carbohydr Polym 2016; 151:684-691. [DOI: 10.1016/j.carbpol.2016.06.017] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/30/2016] [Accepted: 06/02/2016] [Indexed: 10/21/2022]
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26
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Model-based estimation of optimal dissolved oxygen profile in Agrobacterium sp. fed-batch fermentation for improvement of curdlan production under nitrogen-limited condition. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2015.06.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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27
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Castillo NA, Valdez AL, Fariña JI. Microbial production of scleroglucan and downstream processing. Front Microbiol 2015; 6:1106. [PMID: 26528259 PMCID: PMC4606123 DOI: 10.3389/fmicb.2015.01106] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 09/25/2015] [Indexed: 02/04/2023] Open
Abstract
Synthetic petroleum-based polymers and natural plant polymers have the disadvantage of restricted sources, in addition to the non-biodegradability of the former ones. In contrast, eco-sustainable microbial polysaccharides, of low-cost and standardized production, represent an alternative to address this situation. With a strong global market, they attracted worldwide attention because of their novel and unique physico-chemical properties as well as varied industrial applications, and many of them are promptly becoming economically competitive. Scleroglucan, a β-1,3-β-1,6-glucan secreted by Sclerotium fungi, exhibits high potential for commercialization and may show different branching frequency, side-chain length, and/or molecular weight depending on the producing strain or culture conditions. Water-solubility, viscosifying ability and wide stability over temperature, pH and salinity make scleroglucan useful for different biotechnological (enhanced oil recovery, food additives, drug delivery, cosmetic and pharmaceutical products, biocompatible materials, etc.), and biomedical (immunoceutical, antitumor, etc.) applications. It can be copiously produced at bioreactor scale under standardized conditions, where a high exopolysaccharide concentration normally governs the process optimization. Operative and nutritional conditions, as well as the incidence of scleroglucan downstream processing will be discussed in this chapter. The relevance of using standardized inocula from selected strains and experiences concerning the intricate scleroglucan scaling-up will be also herein outlined.
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Affiliation(s)
- Natalia A Castillo
- Laboratorio de Biotecnología Fúngica, Planta Piloto de Procesos Industriales Microbiológicos-CONICET San Miguel de Tucumán, Argentina ; Cátedra de Micología, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán San Miguel de Tucumán, Argentina
| | - Alejandra L Valdez
- Laboratorio de Biotecnología Fúngica, Planta Piloto de Procesos Industriales Microbiológicos-CONICET San Miguel de Tucumán, Argentina ; Cátedra de Microbiología, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán San Miguel de Tucumán, Argentina
| | - Julia I Fariña
- Laboratorio de Biotecnología Fúngica, Planta Piloto de Procesos Industriales Microbiológicos-CONICET San Miguel de Tucumán, Argentina ; Cátedra de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Catamarca San Fernando del Valle de Catamarca, Argentina
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28
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Yang Y, Gao M, Yu X, Zhang Y, Lyu S. Optimization of medium composition for two-step fermentation of vitamin C based on artificial neural network–genetic algorithm techniques. BIOTECHNOL BIOTEC EQ 2015. [DOI: 10.1080/13102818.2015.1063970] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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29
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Zhang J, Dong YC, Fan LL, Jiao ZH, Chen QH. Optimization of culture medium compositions for gellan gum production by a halobacterium Sphingomonas paucimobilis. Carbohydr Polym 2015; 115:694-700. [DOI: 10.1016/j.carbpol.2014.09.029] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Revised: 09/10/2014] [Accepted: 09/11/2014] [Indexed: 12/19/2022]
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30
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Bhattacharya M, Biswas D, Sana S, Datta S. Utilization of waste engine oil by Ochrobactrum pseudintermedium strain C1 that secretes an exopolysaccharide as a bioemulsifier. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2014. [DOI: 10.1016/j.bcab.2014.09.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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31
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Shi T, Aryantini NPD, Uchida K, Urashima T, Fukuda K. Enhancement of Exopolysaccharide Production of Lactobacillus fermentum TDS030603 by Modifying Culture Conditions. BIOSCIENCE OF MICROBIOTA FOOD AND HEALTH 2014; 33:85-90. [PMID: 25003022 PMCID: PMC4081186 DOI: 10.12938/bmfh.33.85] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 11/12/2013] [Indexed: 11/05/2022]
Abstract
To optimize culture conditions that enhance production of a highly viscous exopolysaccharide of Lactobacillus fermentum TDS030603, a chemically defined medium was examined. The best yield was found to be 199 ± 23 mg/l when 48-hr cultivation was microaerobically performed at 30°C in the chemically defined medium supplemented with 5% glucose and 1% ammonium citrate without pH control. In response to the optimized exopolysaccharide production, the mRNA expression levels of epsB, epsE, and epsG elevated significantly. Our results indicated that the optimal C/N ratio and/or microaerobic condition can alter the expression levels of several exopolysaccharide biosynthesis-related genes promoting the exopolysaccharide production yield.
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Affiliation(s)
- Tala Shi
- Department of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | - Ni Putu Desy Aryantini
- Department of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | - Kenji Uchida
- Research Center, Yotsuba Milk Products Co., Ltd., 465-1 Wako, Kitahiroshima, Hokkaido 061-1264, Japan
| | - Tadasu Urashima
- Department of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | - Kenji Fukuda
- Department of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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32
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Fuzi SFZM, Razali F, Jahim JM, Rahman RA, Illias RM. Simplified feeding strategies for the fed-batch cultivation of Kluyveromyces lactis GG799 for enhanced recombinant xylanase production. Bioprocess Biosyst Eng 2014; 37:1887-98. [DOI: 10.1007/s00449-014-1163-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 02/26/2014] [Indexed: 12/19/2022]
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33
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Zhu G, Sheng L, Tong Q. Enhanced gellan gum production by hydrogen peroxide (H2O2) induced oxidative stresses in Sphingomonas paucimobilis. Bioprocess Biosyst Eng 2013; 37:743-8. [DOI: 10.1007/s00449-013-1030-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 07/26/2013] [Indexed: 10/26/2022]
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34
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Vijayendra SVN, Shamala TR. Film forming microbial biopolymers for commercial applications—A review. Crit Rev Biotechnol 2013; 34:338-57. [DOI: 10.3109/07388551.2013.798254] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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35
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Zhu G, Sheng L, Tong Q. A new strategy to enhance gellan production by two-stage culture in Sphingomonas paucimobilis. Carbohydr Polym 2013; 98:829-34. [PMID: 23987418 DOI: 10.1016/j.carbpol.2013.06.060] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 06/20/2013] [Accepted: 06/26/2013] [Indexed: 10/26/2022]
Abstract
The effects of different initial sucrose concentrations and temperatures on gellan biosynthesis by Sphingomonas paucimobilis ATCC 31461 were investigated. Lower sucrose concentrations and higher temperatures were favorable for cell growth. Higher sucrose concentrations and lower temperatures promoted gellan production but retarded cell growth. Based on these results, a two-stage culture strategy was developed to improve gellan production. During the first 24 h, S. paucimobilis was cultured in a pulse fed-batch mode with an initial sucrose concentration 10 g/L. Ten grams per liter of sucrose were added at 12 h and 24 h, and the temperature was controlled at 33 °C. Batch culture was performed, and the temperature was reduced to 28 °C to achieve a high gellan accumulation. The two-stage culture strategy achieved the highest gellan production (22.61 g/L) at 60 h that was 35.71% higher than the result of the best conventional batch operation (16.66 g/L). Meanwhile, high gellan yield was related to high UDPG-pyrophosphorylase activity and glucosyltransferase activity.
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Affiliation(s)
- Guilan Zhu
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
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36
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Wu W, Fan Z. A general inhibition kinetics model for ethanol production using a novel carbon source: sodium gluconate. Bioprocess Biosyst Eng 2013; 36:1631-40. [DOI: 10.1007/s00449-013-0938-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 02/25/2013] [Indexed: 11/24/2022]
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37
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Higher-level production of ascomycin (FK520) by Streptomyces hygroscopicus var. ascomyceticus irradiated by femtosecond laser. BIOTECHNOL BIOPROC E 2012. [DOI: 10.1007/s12257-012-0114-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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38
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Genome sequence of Sphingomonas elodea ATCC 31461, a highly productive industrial strain of gellan gum. J Bacteriol 2012; 193:7015-6. [PMID: 22123766 DOI: 10.1128/jb.06307-11] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The commercial gelling agent gellan gum is a heteropolysaccharide produced by Sphingomonas elodea ATCC 31461. However, the genes involved in the biosynthesis, regulation, and modification of gellan gum have not been fully characterized. Here we describe the draft genome sequence of stain ATCC 31461 and major findings from its annotation.
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39
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Nourouzi MM, Chuah TG, Choong TSY, Rabiei F. Modeling biodegradation and kinetics of glyphosate by artificial neural network. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2012; 47:455-65. [PMID: 22424071 DOI: 10.1080/03601234.2012.663603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
An artificial neural network (ANN) model was developed to simulate the biodegradation of herbicide glyphosate [2-(Phosphonomethylamino) acetic acid] in a solution with varying parameters pH, inoculum size and initial glyphosate concentration. The predictive ability of ANN model was also compared with Monod model. The result showed that ANN model was able to accurately predict the experimental results. A low ratio of self-inhibition and half saturation constants of Haldane equations (< 8) exhibited the inhibitory effect of glyphosate on bacteria growth. The value of K(i)/K(s) increased when the mixed inoculum size was increased from 10(4) to 10(6) bacteria/mL. It was found that the percentage of glyphosate degradation reached a maximum value of 99% at an optimum pH 6-7 while for pH values higher than 9 or lower than 4, no degradation was observed.
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Affiliation(s)
- Mohsen M Nourouzi
- Department of Chemical and Environmental Engineering, Universiti Putra Malaysia, Selangor, Malaysia.
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Optimization of fermentation conditions and rheological properties of exopolysaccharide produced by deep-sea bacterium Zunongwangia profunda SM-A87. PLoS One 2011; 6:e26825. [PMID: 22096500 PMCID: PMC3214017 DOI: 10.1371/journal.pone.0026825] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Accepted: 10/04/2011] [Indexed: 11/19/2022] Open
Abstract
Zunongwangia profunda SM-A87 isolated from deep-sea sediment can secrete large quantity of exopolysaccharide (EPS). Response surface methodology was applied to optimize the culture conditions for EPS production. Single-factor experiment showed that lactose was the best carbon source. Based on the Plackett–Burman design, lactose, peptone and temperature were selected as significant variables, which were further optimized by the steepest ascent (descent) method and central composite design. The optimal culture conditions for EPS production and broth viscosity were determined as 32.21 g/L lactose, 8.87 g/L peptone and an incubation temperature of 9.8°C. Under these conditions, the maximum EPS yield and broth viscosity were 8.90 g/L and 6551 mPa•s, respectively, which is the first report of such high yield of EPS from a marine bacterium. The aqueous solution of the EPS displayed high viscosity, interesting shearing thinning property and great tolerance to high temperature, a wide range of pH, and high salinity.
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Lu ZM, Lei JY, Xu HY, Shi JS, Xu ZH. Optimization of fermentation medium for triterpenoid production from Antrodia camphorata ATCC 200183 using artificial intelligence-based techniques. Appl Microbiol Biotechnol 2011; 92:371-9. [PMID: 21870045 DOI: 10.1007/s00253-011-3544-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Revised: 07/01/2011] [Accepted: 08/03/2011] [Indexed: 11/25/2022]
Abstract
In this study, alteration in morphology of submergedly cultured Antrodia camphorata ATCC 200183 including arthroconidia, mycelia, external and internal structures of pellets was investigated. Two optimization models namely response surface methodology (RSM) and artificial neural network (ANN) were built to optimize the inoculum size and medium components for intracellular triterpenoid production from A. camphorata. Root mean squares error, R (2), and standard error of prediction given by ANN model were 0.31%, 0.99%, and 0.63%, respectively, while RSM model gave 1.02%, 0.98%, and 2.08%, which indicated that fitness and prediction accuracy of ANN model was higher when compared to RSM model. Furthermore, using genetic algorithm (GA), the input space of ANN model was optimized, and maximum triterpenoid production of 62.84 mg l(-1) was obtained at the GA-optimized concentrations of arthroconidia (1.78 × 10⁵ ml(-1)) and medium components (glucose, 25.25 g l(-1); peptone, 4.48 g l(-1); and soybean flour, 2.74 g l(-1)). The triterpenoid production experimentally obtained using the ANN-GA designed medium was 64.79 ± 2.32 mg l(-1) which was in agreement with the predicted value. The same optimization process may be used to optimize many environmental and genetic factors such as temperature and agitation that can also affect the triterpenoid production from A. camphorata and to improve the production of bioactive metabolites from potent medicinal fungi by changing the fermentation parameters.
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Affiliation(s)
- Zhen-Ming Lu
- Laboratory of Pharmaceutical Engineering, School of Medicine and Pharmaceutics, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, People's Republic of China
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Chowdhury SR, Basak RK, Sen R, Adhikari B. Optimization, dynamics, and enhanced production of a free radical scavenging extracellular polysaccharide (EPS) from hydrodynamic sediment attached Bacillus megaterium RB-05. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.06.050] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kostov G, Angelov M, Denkova Z, Dobrev I, Goranov B. Lactic acid production with Lactobacillus casei ssp. rhamnosus NBIMCC 1013: Modeling and optimization of the nutrient medium. Eng Life Sci 2011. [DOI: 10.1002/elsc.201000022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Wu X, Li O, Chen Y, Zhu L, Qian C, Teng Y, Tao X. A carotenoid-free mutant strain of Sphingomonas paucimobilis ATCC 31461 for the commercial production of gellan. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.01.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Zhu L, Wu X, Li O, Chen Y, Qian C, Teng Y, Tao X, Gao H. Cloning and knockout of phytoene desaturase gene in Sphingomonas elodea ATCC 31461 for economic recovery of gellan gum. J Ind Microbiol Biotechnol 2011; 38:1507-13. [DOI: 10.1007/s10295-010-0937-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Accepted: 12/27/2010] [Indexed: 11/29/2022]
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Wu X, Chen Y, Li Y, Li O, Zhu L, Qian C, Tao X, Teng Y. Constitutive expression of Vitreoscilla haemoglobin in Sphingomonas elodea to improve gellan gum production. J Appl Microbiol 2010; 110:422-30. [DOI: 10.1111/j.1365-2672.2010.04896.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Freitas F, Alves VD, Pais J, Carvalheira M, Costa N, Oliveira R, Reis MA. Production of a new exopolysaccharide (EPS) by Pseudomonas oleovorans NRRL B-14682 grown on glycerol. Process Biochem 2010. [DOI: 10.1016/j.procbio.2009.09.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bankar SB, Bule MV, Singhal RS, Ananthanarayan L. Glucose oxidase--an overview. Biotechnol Adv 2009; 27:489-501. [PMID: 19374943 DOI: 10.1016/j.biotechadv.2009.04.003] [Citation(s) in RCA: 681] [Impact Index Per Article: 45.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2008] [Revised: 03/25/2009] [Accepted: 04/07/2009] [Indexed: 10/20/2022]
Abstract
Glucose oxidase (beta-D-glucose:oxygen 1-oxidoreductase; EC 1.1.2.3.4) catalyzes the oxidation of beta-D-glucose to gluconic acid, by utilizing molecular oxygen as an electron acceptor with simultaneous production of hydrogen peroxide. Microbial glucose oxidase is currently receiving much attention due to its wide applications in chemical, pharmaceutical, food, beverage, clinical chemistry, biotechnology and other industries. Novel applications of glucose oxidase in biosensors have increased the demand in recent years. Present review discusses the production, recovery, characterization, immobilization and applications of glucose oxidase. Production of glucose oxidase by fermentation is detailed, along with recombinant methods. Various purification techniques for higher recovery of glucose oxidase are described here. Issues of enzyme kinetics, stability studies and characterization are addressed. Immobilized preparations of glucose oxidase are also discussed. Applications of glucose oxidase in various industries and as analytical enzymes are having an increasing impact on bioprocessing.
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Affiliation(s)
- Sandip B Bankar
- Food Engineering and Technology Department, Institute of Chemical Technology, University of Mumbai, Matunga, Mumbai 400019, India
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Deive FJ, Carvalho E, Pastrana L, Rúa ML, Longo MA, Sanroman MA. Assessment of Relevant Factors Influencing Lipolytic Enzyme Production by Thermus thermophilus HB27 in Laboratory-Scale Bioreactors. Chem Eng Technol 2009. [DOI: 10.1002/ceat.200800613] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Occurrence, production, and applications of gellan: current state and perspectives. Appl Microbiol Biotechnol 2008; 79:889-900. [DOI: 10.1007/s00253-008-1496-0] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2008] [Revised: 04/03/2008] [Accepted: 04/05/2008] [Indexed: 10/22/2022]
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