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Hooe SL, Smith AD, Dean SN, Breger JC, Ellis GA, Medintz IL. Multienzymatic Cascades and Nanomaterial Scaffolding-A Potential Way Forward for the Efficient Biosynthesis of Novel Chemical Products. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2309963. [PMID: 37944537 DOI: 10.1002/adma.202309963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/25/2023] [Indexed: 11/12/2023]
Abstract
Synthetic biology is touted as the next industrial revolution as it promises access to greener biocatalytic syntheses to replace many industrial organic chemistries. Here, it is shown to what synthetic biology can offer in the form of multienzyme cascades for the synthesis of the most basic of new materials-chemicals, including especially designer chemical products and their analogs. Since achieving this is predicated on dramatically expanding the chemical space that enzymes access, such chemistry will probably be undertaken in cell-free or minimalist formats to overcome the inherent toxicity of non-natural substrates to living cells. Laying out relevant aspects that need to be considered in the design of multi-enzymatic cascades for these purposes is begun. Representative multienzymatic cascades are critically reviewed, which have been specifically developed for the synthesis of compounds that have either been made only by traditional organic synthesis along with those cascades utilized for novel compound syntheses. Lastly, an overview of strategies that look toward exploiting bio/nanomaterials for accessing channeling and other nanoscale materials phenomena in vitro to direct novel enzymatic biosynthesis and improve catalytic efficiency is provided. Finally, a perspective on what is needed for this field to develop in the short and long term is presented.
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Affiliation(s)
- Shelby L Hooe
- Center for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, DC, 20375, USA
- National Research Council, Washington, DC, 20001, USA
| | - Aaron D Smith
- Center for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, DC, 20375, USA
| | - Scott N Dean
- Center for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, DC, 20375, USA
| | - Joyce C Breger
- Center for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, DC, 20375, USA
| | - Gregory A Ellis
- Center for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, DC, 20375, USA
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering Code 6900, U.S. Naval Research Laboratory, Washington, DC, 20375, USA
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2
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Manhas RS, Kumar A, Chaubey A. A biostatistical approach for augmenting rare bianthraquinone antibiotic production by Streptomyces sp. RA-WS2 using Taguchi design. AMB Express 2022; 12:155. [PMID: 36515787 DOI: 10.1186/s13568-022-01497-5] [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: 09/08/2022] [Accepted: 11/24/2022] [Indexed: 12/15/2022] Open
Abstract
Consistent production of bioactives from microbial sources remains a big challenge for fermentation based bio-processes. Setomimycin, a rare 9,9'-bianthrylanthracene antibiotic reported to be active against Gram positive bacteria i.e. Staphyloccocus aureus, Bacillus subtilis, Bacillus cereus, and Mycobacterium smegmatis, including mycobacteria is one of the least exploited antibiotic. Present work aims to enhance and maximize setomimycin production using One Factor at a Time (OFAT) approach, followed by Taguchi L9 orthogonal array (OA) design in 30L fermenter. Four most influential parameters, namely carbon source, nitrogen source, air and agitation were selected for optimization studies. The optimized production medium supplemented with 150 g/L glycerol and 7.5 g/L soyabean meal with an agitation rate of 100 RPM and air flow rate of 20 LPM (Liters Per Minute) resulted in 675 mg/L setomimycin production within 96-108 h of fermentation as compared to the initial production i.e. 40 mg/L. Thus, an overall enhancement of 16.8 folds was achieved in setomimycin production after optimization in 30L fermenter.
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Affiliation(s)
- Ravi Singh Manhas
- Fermentation & Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India.,Academy of Scientific and Innovative Research, CSIR-Human Resource Development Centre, Campus Ghaziabad, Ghaziabad, 201002, India
| | - Amit Kumar
- Quality Management & Instrumentation Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India.,Academy of Scientific and Innovative Research, CSIR-Human Resource Development Centre, Campus Ghaziabad, Ghaziabad, 201002, India
| | - Asha Chaubey
- Fermentation & Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India. .,Academy of Scientific and Innovative Research, CSIR-Human Resource Development Centre, Campus Ghaziabad, Ghaziabad, 201002, India.
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3
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Sarkar S, Sarkar S, Bhowmick TK, Gayen K. Process intensification for the enhancement of growth and chlorophyll molecules of isolated Chlorella thermophila: A systematic experimental and optimization approach. Prep Biochem Biotechnol 2022:1-19. [DOI: 10.1080/10826068.2022.2119578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Sreya Sarkar
- Department of Chemical engineering, National Institute of Technology Agartala, Agartala, India
| | - Sambit Sarkar
- Department of Chemical engineering, National Institute of Technology Agartala, Agartala, India
| | - Tridib Kumar Bhowmick
- Department of Bioengineering, National Institute of Technology Agartala, Agartala, India
| | - Kalyan Gayen
- Department of Chemical engineering, National Institute of Technology Agartala, Agartala, India
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Mathew D, Bhat SG. Statistical design for biogenesis of melanin nanoparticles from producer strain pseudomonas stutzeri BTCZ 109 through taguchi DOE. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Zhao NY, Lian JY, Wang PF, Xu ZB. Recent progress in minimizing the warpage and shrinkage deformations by the optimization of process parameters in plastic injection molding: a review. THE INTERNATIONAL JOURNAL, ADVANCED MANUFACTURING TECHNOLOGY 2022; 120:85-101. [PMID: 35194289 PMCID: PMC8831005 DOI: 10.1007/s00170-022-08859-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 02/01/2022] [Indexed: 05/13/2023]
Abstract
The quality control of plastic products is an essential aspect of the plastic injection molding (PIM) process. However, the warpage and shrinkage deformations continue to exist because the PIM process is easily interfered with by several related or independent process parameters. Thus, great efforts have been devoted to optimizing process parameters to minimize the warpage and shrinkage deformations of products during the last decades. In this review, we begin by introducing the manufacturing process in PIM and the cause of warpage and shrinkage deformations, followed by the mechanism about how process parameters, like mold temperature, melt temperature, injection rate, injection pressure, holding pressure, holding and cooling duration, affect those defects. Then, we summarize the recent progress of the design of experiments and four advanced methods (artificial neural networks, genetic algorithm, response surface methodology, and Kriging model) on optimizing process parameters to minimize the warpage and shrinkage deformations. In the end, future perspectives of quality control in injection molding machines are discussed.
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Affiliation(s)
- Nan-yang Zhao
- College of Energy Engineering, Zhejiang University, Hangzhou, 310027 China
| | - Jiao-yuan Lian
- School of Engineering, Zhejiang University City College, Hangzhou, 310015 China
| | - Peng-fei Wang
- School of Engineering, Zhejiang University City College, Hangzhou, 310015 China
| | - Zhong-bin Xu
- College of Energy Engineering, Zhejiang University, Hangzhou, 310027 China
- School of Engineering, Zhejiang University City College, Hangzhou, 310015 China
- Ningbo Research Institute, and Institute of Robotics, Zhejiang University, Ningbo, 315100 China
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Abstract
In this study, we elucidate the reaction kinetics for the simultaneous hydrodeoxygenation of xylitol to 1,2-dideoxypentitol and 1,2,5-pentanetriol over a ReOx-Pd/CeO2 (2.0 weight% Re, 0.30 weight% Pd) catalyst. The reaction was determined to be a zero-order reaction with respect to xylitol. The activation energy was elucidated through an Arrhenius relationship as well as non-Arrhenius kinetics. The Arrhenius relationship was investigated at 150–170 °C and a constant H2 pressure of 10 bar resulting in an activation energy of 48.7 ± 10.5 kJ/mol. The investigation of non-Arrhenius kinetics was conducted at 120–170 °C and a sub-Arrhenius relation was elucidated with activation energy being dependent on temperature, and ranging from 10.2–51.8 kJ/mol in the temperature range investigated. Internal and external mass transfer were investigated through evaluating the Weisz–Prater criterion and the effect of varying stirring rate on the reaction rate, respectively. There were no internal or external mass transfer limitations present in the reaction.
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Soluble overexpression, high-level production and purification of receptor binding domain of human VEGF8-109 in E. coli. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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da Costa RMF, Pattathil S, Avci U, Winters A, Hahn MG, Bosch M. Desirable plant cell wall traits for higher-quality miscanthus lignocellulosic biomass. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:85. [PMID: 31011368 PMCID: PMC6463665 DOI: 10.1186/s13068-019-1426-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 04/05/2019] [Indexed: 05/07/2023]
Abstract
BACKGROUND Lignocellulosic biomass from dedicated energy crops such as Miscanthus spp. is an important tool to combat anthropogenic climate change. However, we still do not exactly understand the sources of cell wall recalcitrance to deconstruction, which hinders the efficient biorefining of plant biomass into biofuels and bioproducts. RESULTS We combined detailed phenotyping, correlation studies and discriminant analyses, to identify key significantly distinct variables between miscanthus organs, genotypes and most importantly, between saccharification performances. Furthermore, for the first time in an energy crop, normalised total quantification of specific cell wall glycan epitopes is reported and correlated with saccharification. CONCLUSIONS In stems, lignin has the greatest impact on recalcitrance. However, in leaves, matrix glycans and their decorations have determinant effects, highlighting the importance of biomass fine structures, in addition to more commonly described cell wall compositional features. The results of our interrogation of the miscanthus cell wall promote the concept that desirable cell wall traits for increased biomass quality are highly dependent on the target biorefining products. Thus, for the development of biorefining ideotypes, instead of a generalist miscanthus variety, more realistic and valuable approaches may come from defining a collection of specialised cultivars, adapted to specific conditions and purposes.
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Affiliation(s)
- Ricardo M. F. da Costa
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EE UK
- Present Address: Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Sivakumar Pattathil
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Rd., Athens, GA 30602-4712 USA
- Present Address: Mascoma LLC (Lallemand, Inc.), 67 Etna Road, Lebanon, NH 03766 USA
| | - Utku Avci
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Rd., Athens, GA 30602-4712 USA
- Present Address: Faculty of Engineering, Bioengineering Department, Recep Tayyip Erdogan University, 53100 Rize, Turkey
| | - Ana Winters
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EE UK
| | - Michael G. Hahn
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Rd., Athens, GA 30602-4712 USA
- DOE-BioEnergy Science Center (BESC), Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA
| | - Maurice Bosch
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EE UK
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Maturano YP, Mestre MV, Kuchen B, Toro ME, Mercado LA, Vazquez F, Combina M. Optimization of fermentation-relevant factors: A strategy to reduce ethanol in red wine by sequential culture of native yeasts. Int J Food Microbiol 2018; 289:40-48. [PMID: 30196180 DOI: 10.1016/j.ijfoodmicro.2018.08.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/09/2018] [Accepted: 08/14/2018] [Indexed: 01/22/2023]
Abstract
Current consumer preferences are determined by well-structured, full-bodied wines with a rich flavor and with reduced alcohol levels. One of the strategies for obtaining wines with reduced ethanol content is sequential inoculation of non-Saccharomyces and Saccharomyces cerevisiae yeasts. However, different factors affect the production of metabolites like ethanol, glycerol and acetic acid by inoculated yeasts. In order to obtain low alcohol wines without quality loss, the aims of our study were: i) to determine optimum conditions (fermentation temperature and time of permanence and initial inoculum size of the non-Saccharomyces population at the beginning of the process, prior to inoculation with S. cerevisiae); ii) to validate the optimized factors; and iii) to assess sensory quality of the wines obtained after validation. Two combinations of yeasts were used in this study: Hanseniaspora uvarum BHu9/S. cerevisiae BSc114 and Candida membranaefaciens BCm71/S. cerevisiae BSc114. Optimization of three fermentation factors that affect to non-Saccharomyces yeasts prior to S. cerevisiae inoculation was carried out using a Box-Behnken experimental design. Applying the models constructed by Response Surface Methodology, the lowest ethanol production by H. uvarum BHu9/S. cerevisiae BSc114 co-culture was obtained when H. uvarum BHu9 was inoculated 48 h 37 min prior to S. cerevisiae inoculation, at a fermentation temperature of 25 °C and at an initial inoculum size of 5 × 106 cells/mL. Lowest alcohol production with C. membranaefaciens BCm71/S. cerevisiae BSc114 was observed when C. membranaefaciens BCm71 was inoculated 24 h 15 min prior to S. cerevisiae at a fermentation temperature of 24.94 °C and at an initial inoculum size of 2.72 × 106 cells/mL. The optimized conditions of the two co-cultures were subsequently submitted to lab-scale validation. Both proposed strategies yielded ethanol levels that were significantly lower than control cultures (S. cerevisiae). Wines fermented with non-Saccharomyces/Saccharomyces co-cultures under optimized conditions were also associated with higher aromatic complexity characterized by the presence of red fruit aromas, whereas wines obtained with S. cerevisiae BSc114 were described by parameters linked with high ethanol levels.
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Affiliation(s)
- Y Paola Maturano
- Instituto de Biotecnología, Universidad Nacional de San Juan (UNSJ), Av. San Martín 1109 (O), San Juan 5400, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Av. Rivadavia 1917, Ciudad Autónoma de Buenos Aires C1033AAJ, Argentina
| | - M Victoria Mestre
- Instituto de Biotecnología, Universidad Nacional de San Juan (UNSJ), Av. San Martín 1109 (O), San Juan 5400, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Av. Rivadavia 1917, Ciudad Autónoma de Buenos Aires C1033AAJ, Argentina.
| | - Benjamín Kuchen
- Instituto de Biotecnología, Universidad Nacional de San Juan (UNSJ), Av. San Martín 1109 (O), San Juan 5400, Argentina; Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Av. Rivadavia 1917, Ciudad Autónoma de Buenos Aires C1033AAJ, Argentina
| | - M Eugenia Toro
- Instituto de Biotecnología, Universidad Nacional de San Juan (UNSJ), Av. San Martín 1109 (O), San Juan 5400, Argentina
| | - Laura A Mercado
- Estación Experimental Agropecuaria Mendoza, Instituto Nacional de Tecnología Agropecuaria (INTA), San Martin 3853, 5507 Luján de Cuyo, Mendoza, Argentina
| | - Fabio Vazquez
- Instituto de Biotecnología, Universidad Nacional de San Juan (UNSJ), Av. San Martín 1109 (O), San Juan 5400, Argentina
| | - Mariana Combina
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Av. Rivadavia 1917, Ciudad Autónoma de Buenos Aires C1033AAJ, Argentina; Estación Experimental Agropecuaria Mendoza, Instituto Nacional de Tecnología Agropecuaria (INTA), San Martin 3853, 5507 Luján de Cuyo, Mendoza, Argentina
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10
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Pant A, Rai JPN. Bioremediation of chlorpyrifos contaminated soil by two phase bioslurry reactor: Processes evaluation and optimization by Taguchi's design of experimental (DOE) methodology. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 150:305-311. [PMID: 29291582 DOI: 10.1016/j.ecoenv.2017.12.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 12/20/2017] [Accepted: 12/24/2017] [Indexed: 06/07/2023]
Abstract
Two phase bioreactor was constructed, designed and developed to evaluate the chlorpyrifos remediation. Six biotic and abiotic factors (substrate-loading rate, slurry phase pH, slurry phase dissolved oxygen (DO), soil water ratio, temperature and soil micro flora load) were evaluated by design of experimental (DOE) methodology employing Taguchi's orthogonal array (OA). The selected six factors were considered at two levels L-8 array (2^7, 15 experiments) in the experimental design. The optimum operating conditions obtained from the methodology showed enhanced chlorpyrifos degradation from 283.86µg/g to 955.364µg/g by overall 70.34% of enhancement. In the present study, with the help of few well defined experimental parameters a mathematical model was constructed to understand the complex bioremediation process and optimize the approximate parameters upto great accuracy.
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Affiliation(s)
- Apourv Pant
- Department of Environmental Sciences, GBPUA&T, India.
| | - J P N Rai
- Department of Environmental Sciences, GBPUA&T, India
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Kumar V, Krishania M, Preet Sandhu P, Ahluwalia V, Gnansounou E, Sangwan RS. Efficient detoxification of corn cob hydrolysate with ion-exchange resins for enhanced xylitol production by Candida tropicalis MTCC 6192. BIORESOURCE TECHNOLOGY 2018; 251:416-419. [PMID: 29276111 DOI: 10.1016/j.biortech.2017.11.039] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/09/2017] [Accepted: 11/13/2017] [Indexed: 06/07/2023]
Abstract
The present study demonstrates utilization of secondary agricultural wastes for xylitol production. The highest xylan-to-xylose (70%) conversion was achieved using dilute nitric acid as catalyst followed by resin treatment. Results show that resin treatment efficiently removed nitrate salt (70%), phenolic content and 5-HMF (70%). Highest xylitol yield (85%) was achieved during fermentation using Candida tropicalis MTCC 6192 from the neutralized hemicellulosic hydrolysate medium. Good recovery (>15%) was achieved from corncob with 85% xylose to xylitol conversion during fermentation. This two-step process for transformation of agri-waste to xylitol is much simpler and it could possibly be considered for up scaling after process optimization parameters.
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Affiliation(s)
- Vinod Kumar
- Center of Innovative and Applied Bioprocessing (CIAB), Mohali, Punjab 160071, India.
| | - Meena Krishania
- Center of Innovative and Applied Bioprocessing (CIAB), Mohali, Punjab 160071, India
| | - Pankaj Preet Sandhu
- Center of Innovative and Applied Bioprocessing (CIAB), Mohali, Punjab 160071, India
| | - Vivek Ahluwalia
- Center of Innovative and Applied Bioprocessing (CIAB), Mohali, Punjab 160071, India
| | - Edgard Gnansounou
- Laboratory of Energy Systems, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Rajender S Sangwan
- Center of Innovative and Applied Bioprocessing (CIAB), Mohali, Punjab 160071, India.
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Zhang BB, Xing HB, Jiang BJ, Chen L, Xu GR, Jiang Y, Zhang DY. Using millet as substrate for efficient production of monacolin K by solid-state fermentation of Monascus ruber. J Biosci Bioeng 2017; 125:333-338. [PMID: 29157871 DOI: 10.1016/j.jbiosc.2017.10.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 10/20/2017] [Indexed: 01/20/2023]
Abstract
In this study, various grains such as rice, millet, corn, barley and wheat were used as raw materials for monacolin K production by solid-state fermentation of Monascus ruber. Among these substrates, millet was found to be the best one for monacolin K production, by which the yield reached 7.12 mg/g. For enhanced monacolin K production, the effects of fermentation time, charge amount, initial moisture content and inoculum volume were systematically investigated in the solid-state fermentation of M. ruber. Moreover, complementary carbon source and nitrogen source were added for further improving the production of monacolin K. Results showed that the maximum production of monacolin K (19.81 mg/g) could be obtained at the optimal conditions. Compared with the traditional red mold rice, using millet as substrate is promising for high production of monacolin K in the solid-state fermentation of M. ruber.
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Affiliation(s)
- Bo-Bo Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi 214122, China.
| | - Hong-Bo Xing
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi 214122, China
| | - Bing-Jie Jiang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi 214122, China
| | - Lei Chen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi 214122, China
| | - Gan-Rong Xu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi 214122, China
| | - Yun Jiang
- Sichuan Neautus Traditional Chinese Medicine Co., Herui South Avenue 8, Chengdu 610036, China
| | - Da-Yong Zhang
- Sichuan Neautus Traditional Chinese Medicine Co., Herui South Avenue 8, Chengdu 610036, China
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13
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Sushma C, Anand AP, Veeranki VD. Enhanced production of glutaminase free L-asparaginase II by Bacillus subtilis WB800N through media optimization. KOREAN J CHEM ENG 2017. [DOI: 10.1007/s11814-017-0211-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Farasat A, Rahbarizadeh F, Ahmadvand D, Yazdian F. Optimization of an anti-HER2 nanobody expression using the Taguchi method. Prep Biochem Biotechnol 2017. [DOI: 10.1080/10826068.2017.1342259] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Alireza Farasat
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Fatemeh Rahbarizadeh
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Davoud Ahmadvand
- School of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
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Dutta S, Basak B, Bhunia B, Sinha A, Dey A. Approaches towards the enhanced production of Rapamycin by Streptomyces hygroscopicus MTCC 4003 through mutagenesis and optimization of process parameters by Taguchi orthogonal array methodology. World J Microbiol Biotechnol 2017; 33:90. [PMID: 28390015 DOI: 10.1007/s11274-017-2260-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Accepted: 04/01/2017] [Indexed: 11/28/2022]
Abstract
The present research was conducted to define the approaches for enhanced production of rapamycin (Rap) by Streptomyces hygroscopicus microbial type culture collection (MTCC) 4003. Both physical mutagenesis by ultraviolet ray (UV) and chemical mutagenesis by N-methyl-N-nitro-N-nitrosoguanidine (NTG) have been applied successfully for the improvement of Rap production. Enhancing Rap yield by novel sequential UV mutagenesis technique followed by fermentation gives a significant difference in getting economically scalable amount of this industrially important macrolide compound. Mutant obtained through NTG mutagenesis (NTG-30-27) was found to be superior to others as it initially produced 67% higher Rap than wild type. Statistical optimization of nutritional and physiochemical parameters was carried out to find out most influential factors responsible for enhanced Rap yield by NTG-30-27 which was performed using Taguchi orthogonal array approach. Around 72% enhanced production was achieved with nutritional factors at their assigned level at 23 °C, 120 rpm and pH 7.6. Results were analysed in triplicate basis where validation and purification was carried out using high performance liquid chromatography. Stability study and potency of extracted Rap was supported by turbidimetric assay taking Candida albicans MTCC 227 as test organism.
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Affiliation(s)
- Subhasish Dutta
- Department of Biotechnology, National Institute of Technology Durgapur, Mahatma Gandhi Avenue, Durgapur, 713209, India
| | - Bikram Basak
- Energy Research and Technology Group, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur, 713209, India
| | - Biswanath Bhunia
- Department of Bioengineering, National Institute of Technology Agartala, Barjala, Tripura, 799055, India
| | - Ankan Sinha
- Department of Biotechnology, National Institute of Technology Durgapur, Mahatma Gandhi Avenue, Durgapur, 713209, India.,Bioprocess Development Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Apurba Dey
- Department of Biotechnology, National Institute of Technology Durgapur, Mahatma Gandhi Avenue, Durgapur, 713209, India.
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16
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Prabhu A. A, Chityala S, Garg Y, Venkata Dasu V. Reverse micellar extraction of papain with cationic detergent based system: An optimization approach. Prep Biochem Biotechnol 2017; 47:236-244. [DOI: 10.1080/10826068.2016.1201685] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ashish Prabhu A.
- Biochemical Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Sushma Chityala
- Biochemical Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Yachna Garg
- Biochemical Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - V. Venkata Dasu
- Biochemical Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
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Optimization of the lipase mediated epoxidation of monoterpenes using the design of experiments—Taguchi method. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.07.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Ur-Rehman S, Mushtaq Z, Zahoor T, Jamil A, Murtaza MA. Xylitol: a review on bioproduction, application, health benefits, and related safety issues. Crit Rev Food Sci Nutr 2016; 55:1514-28. [PMID: 24915309 DOI: 10.1080/10408398.2012.702288] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Xylitol is a pentahydroxy sugar-alcohol which exists in a very low quantity in fruits and vegetables (plums, strawberries, cauliflower, and pumpkin). On commercial scale, xylitol can be produced by chemical and biotechnological processes. Chemical production is costly and extensive in purification steps. However, biotechnological method utilizes agricultural and forestry wastes which offer the possibilities of economic production of xylitol by reducing required energy. The precursor xylose is produced from agricultural biomass by chemical and enzymatic hydrolysis and can be converted to xylitol primarily by yeast strain. Hydrolysis under acidic condition is the more commonly used practice influenced by various process parameters. Various fermentation process inhibitors are produced during chemical hydrolysis that reduce xylitol production, a detoxification step is, therefore, necessary. Biotechnological xylitol production is an integral process of microbial species belonging to Candida genus which is influenced by various process parameters such as pH, temperature, time, nitrogen source, and yeast extract level. Xylitol has application and potential for food and pharmaceutical industries. It is a functional sweetener as it has prebiotic effects which can reduce blood glucose, triglyceride, and cholesterol level. This review describes recent research developments related to bioproduction of xylitol from agricultural wastes, application, health, and safety issues.
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Affiliation(s)
- Salim Ur-Rehman
- a National Institute of Food Science & Technology, University of Agriculture , Faisalabad , 38040 , Pakistan
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A strain of Meyerozyma guilliermondii isolated from sugarcane juice is able to grow and ferment pentoses in synthetic and bagasse hydrolysate media. World J Microbiol Biotechnol 2016; 32:80. [PMID: 27038950 DOI: 10.1007/s11274-016-2036-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 02/20/2016] [Indexed: 10/22/2022]
Abstract
The search for new microbial strains that are able to withstand inhibitors released from hemicellulosic hydrolysis and are also still able to convert sugars in ethanol/xylitol is highly desirable. A yeast strain isolated from sugarcane juice and identified as Meyerozyma guilliermondii was evaluated for the ability to grow and ferment pentoses in synthetic media and in sugarcane bagasse hydrolysate. The yeast grew in xylose, arabinose and glucose at the same rate at an initial medium pH of 5.5. At pH 4.5, the yeast grew more slowly in arabinose. There was no sugar exhaustion within 60 h. At higher xylose concentrations with a higher initial cell concentration, sugar was exhausted within 96 h at pH 4.5. An increase of 350 % in biomass was obtained in detoxified hydrolysates, whereas supplementation with 3 g/L yeast extract increased biomass production by approximately 40 %. Ethanol and xylitol were produced more significantly in supplemented hydrolysates regardless of detoxification. Xylose consumption was enhanced in supplemented hydrolysates and arabinose was consumed only when xylose and glucose were no longer available. Supplementation had a greater impact on ethanol yield and productivity than detoxification; however, the product yields obtained in the present study are still much lower when compared to other yeast species in bagasse hydrolysate. By the other hand, the fermentation of both xylose and arabinose and capability of withstanding inhibitors are important characteristics of the strain assayed.
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Shakambari G, Sumi BM, Ashokkumar B, Palanivelu P, Varalakshmi P. Industrial effluent as a substrate for glutaminase freel-asparaginase production from Pseudomonas plecoglossicida strain RS1; media optimization, enzyme purification and its characterization. RSC Adv 2015. [DOI: 10.1039/c5ra05507e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Glutaminase freel-asparaginase production byPseudomonas plecoglossicidaRS1 using industrial effluent as a substrate: media optimization, enzyme purification and its characterization.
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Affiliation(s)
| | - Babu M. Sumi
- Department of Molecular Microbiology
- Madurai Kamaraj University
- Madurai
- India
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Insight into Microwave-Assisted Lipase Catalyzed Synthesis of Geranyl Cinnamate: Optimization and Kinetic Modeling. Appl Biochem Biotechnol 2014; 175:2035-49. [DOI: 10.1007/s12010-014-1367-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 11/10/2014] [Indexed: 10/24/2022]
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Rani GB, Chiranjeevi T, Chandel AK, Satish T, Radhika K, Narasu ML, Uma A. Optimization of selective production media for enhanced production of xylanases in submerged fermentation by Thielaviopsis basicola MTCC 1467 using L16 orthogonal array. Journal of Food Science and Technology 2014; 51:2508-16. [PMID: 25328190 DOI: 10.1007/s13197-012-0784-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/18/2012] [Accepted: 07/22/2012] [Indexed: 11/30/2022]
Abstract
Enzymes have been the centre of attention for researchers/industrialists worldwide due to their wide range of physiological, analytical, food/feed and industrial based applications. Among the enzymes explored for industrial applications, xylanases play an instrumental role in food/feed, textile/detergent, paper and biorefinery based application sectors. This study deals with the statistical optimization of xylanase production by Thielaviopsis basicola MTCC 1467 under submerged fermentation conditions using rice straw, as sole carbon source. Different fermentation parameters such as carbon source, nitrogen source, inorganic salts like KH2PO4, MgSO4 and pH of the medium were optimized at the individual and interactive level by Taguchi orthogonal array methodology (L16). All selected fermentation parameters influenced the enzyme production. Rice straw, the major carbon source mainly influenced the production of xylanase (~34 %). After media optimization, the yield of enzyme improved from 38 to ~60 IU/ml (161.5 %) indicating the commercial production of xylanase by T. basicola MTCC 1467. This study shows the potential of T. basicola MTCC 1467 for the efficient xylanase production under the optimized set of conditions.
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Affiliation(s)
- G Baby Rani
- Centre for Biotechnology, IST, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad, 500 085 India
| | - T Chiranjeevi
- Centre for Biotechnology, IST, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad, 500 085 India
| | - Anuj K Chandel
- Centre for Biotechnology, IST, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad, 500 085 India ; Department of Biotechnology, School of Engineering of Lorena, Engenharia de Lorena Estrada Municipal do Campinho, Caixa Postal 116 12.602.810 Lorena, SP Brazil
| | - T Satish
- Indian Institute of chemical Technology, Tarnaka, Hyderabad, 500 607 India
| | - K Radhika
- Centre for Biotechnology, IST, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad, 500 085 India
| | - M Lakshmi Narasu
- Centre for Biotechnology, IST, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad, 500 085 India
| | - A Uma
- Centre for Biotechnology, IST, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad, 500 085 India
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Yeh CH, Zhao ZQ, Shen PL, Lin YC. Optimization of an optical inspection system based on the Taguchi method for quantitative analysis of point-of-care testing. SENSORS 2014; 14:16148-58. [PMID: 25256108 PMCID: PMC4208167 DOI: 10.3390/s140916148] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 08/18/2014] [Accepted: 08/25/2014] [Indexed: 11/23/2022]
Abstract
This study presents an optical inspection system for detecting a commercial point-of-care testing product and a new detection model covering from qualitative to quantitative analysis. Human chorionic gonadotropin (hCG) strips (cut-off value of the hCG commercial product is 25 mIU/mL) were the detection target in our study. We used a complementary metal-oxide semiconductor (CMOS) sensor to detect the colors of the test line and control line in the specific strips and to reduce the observation errors by the naked eye. To achieve better linearity between the grayscale and the concentration, and to decrease the standard deviation (increase the signal to noise ratio, S/N), the Taguchi method was used to find the optimal parameters for the optical inspection system. The pregnancy test used the principles of the lateral flow immunoassay, and the colors of the test and control line were caused by the gold nanoparticles. Because of the sandwich immunoassay model, the color of the gold nanoparticles in the test line was darkened by increasing the hCG concentration. As the results reveal, the S/N increased from 43.48 dB to 53.38 dB, and the hCG concentration detection increased from 6.25 to 50 mIU/mL with a standard deviation of less than 10%. With the optimal parameters to decrease the detection limit and to increase the linearity determined by the Taguchi method, the optical inspection system can be applied to various commercial rapid tests for the detection of ketamine, troponin I, and fatty acid binding protein (FABP).
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Affiliation(s)
- Chia-Hsien Yeh
- Department of Engineering Science, National Cheng Kung University, Tainan 701, Taiwan.
| | - Zi-Qi Zhao
- Department of Engineering Science, National Cheng Kung University, Tainan 701, Taiwan.
| | - Pi-Lan Shen
- Firstep Bioresearch, Incorporation, Tainan 701, Taiwan.
| | - Yu-Cheng Lin
- Department of Engineering Science, National Cheng Kung University, Tainan 701, Taiwan.
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25
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Chu FM, Chang KT, Chen KM, Wei GT. Supercritical Fluid Extraction of Camptothecin from Nothapodytes Foetida. J CHIN CHEM SOC-TAIP 2014. [DOI: 10.1002/jccs.201300631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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26
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Rigi G, Mohammadi SG, Arjomand MR, Ahmadian G, Noghabi KA. Optimization of extracellular truncated staphylococcal protein A expression inEscherichia coliBL21 (DE3). Biotechnol Appl Biochem 2014; 61:217-25. [DOI: 10.1002/bab.1157] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 09/07/2013] [Indexed: 12/12/2022]
Affiliation(s)
- Garshasb Rigi
- Department of Molecular Genetics; National Institute of Genetic Engineering and Biotechnology (NIGEB); Tehran Iran
| | - Samira Ghaed Mohammadi
- Department of Molecular Genetics; National Institute of Genetic Engineering and Biotechnology (NIGEB); Tehran Iran
| | - Maryam Rezaei Arjomand
- Department of Molecular Genetics; National Institute of Genetic Engineering and Biotechnology (NIGEB); Tehran Iran
| | - Gholamreza Ahmadian
- Department of Molecular Genetics; National Institute of Genetic Engineering and Biotechnology (NIGEB); Tehran Iran
| | - Kambiz Akbari Noghabi
- Department of Molecular Genetics; National Institute of Genetic Engineering and Biotechnology (NIGEB); Tehran Iran
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27
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Abdel-Wahhab MA, Abdel-Wahhab KG, Mannaa FA, Hassan NS, Safar R, Diab R, Foliguet B, Ferrari L, Rihn BH. Uptake of Eudragit Retard L (Eudragit ® RL) Nanoparticles by Human THP-1 Cell Line and Its Effects on Hematology and Erythrocyte Damage in Rats. MATERIALS 2014; 7:1555-1572. [PMID: 28788531 PMCID: PMC5453249 DOI: 10.3390/ma7031555] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 11/18/2013] [Accepted: 02/18/2014] [Indexed: 01/19/2023]
Abstract
The aim of this study was to prepare Eudragit Retard L (Eudragit RL) nanoparticles (ENPs) and to determine their properties, their uptake by the human THP-1 cell line in vitro and their effect on the hematological parameters and erythrocyte damage in rats. ENPs showed an average size of 329.0 ± 18.5 nm, a positive zeta potential value of +57.5 ± 5.47 mV and nearly spherical shape with a smooth surface. THP-1 cell lines could phagocyte ENPs after 2 h of incubation. In the in vivo study, male Sprague-Dawley rats were exposed orally or intraperitoneally (IP) with a single dose of ENP (50 mg/kg body weight). Blood samples were collected after 4 h, 48 h, one week and three weeks for hematological and erythrocytes analysis. ENPs induced significant hematological disturbances in platelets, red blood cell (RBC) total and differential counts of white blood cells (WBCs) after 4 h, 48 h and one week. ENP increased met-Hb and Co-Hb derivatives and decreased met-Hb reductase activity. These parameters were comparable to the control after three weeks when administrated orally. It could be concluded that the route of administration has a major effect on the induction of hematological disturbances and should be considered when ENPs are applied for drug delivery systems.
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Affiliation(s)
- Mosaad A Abdel-Wahhab
- Food Toxicology & Contaminants Department, National Research Center, Dokki, Cairo 12311, Egypt.
| | | | - Fathia A Mannaa
- Medical Physiology Department, National Research Center, Dokki, Cairo 12311, Egypt.
| | - Nabila S Hassan
- Pathology Department, National Research Center, Dokki, Cairo 12311, Egypt.
| | - Ramia Safar
- Faculty of Pharmacy, EA 3452 CITHEFOR (Cibles thérapeutiques, formulation et expertise préclinique du médicament), Lorraine University, Nancy Cedex 54001, France.
| | - Roudayna Diab
- Faculty of Pharmacy, EA 3452 CITHEFOR (Cibles thérapeutiques, formulation et expertise préclinique du médicament), Lorraine University, Nancy Cedex 54001, France.
| | - Bernard Foliguet
- Faculty of Pharmacy, EA 3452 CITHEFOR (Cibles thérapeutiques, formulation et expertise préclinique du médicament), Lorraine University, Nancy Cedex 54001, France.
| | - Luc Ferrari
- Faculty of Pharmacy, EA 3452 CITHEFOR (Cibles thérapeutiques, formulation et expertise préclinique du médicament), Lorraine University, Nancy Cedex 54001, France.
| | - Bertrand H Rihn
- Faculty of Pharmacy, EA 3452 CITHEFOR (Cibles thérapeutiques, formulation et expertise préclinique du médicament), Lorraine University, Nancy Cedex 54001, France.
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Statistical experimental design guided optimization of a one-pot biphasic multienzyme total synthesis of amorpha-4,11-diene. PLoS One 2013; 8:e79650. [PMID: 24278153 PMCID: PMC3835790 DOI: 10.1371/journal.pone.0079650] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 10/04/2013] [Indexed: 01/20/2023] Open
Abstract
In vitro synthesis of chemicals and pharmaceuticals using enzymes is of considerable interest as these biocatalysts facilitate a wide variety of reactions under mild conditions with excellent regio-, chemo- and stereoselectivities. A significant challenge in a multi-enzymatic reaction is the need to optimize the various steps involved simultaneously so as to obtain high-yield of a product. In this study, statistical experimental design was used to guide the optimization of a total synthesis of amorpha-4,11-diene (AD) using multienzymes in the mevalonate pathway. A combinatorial approach guided by Taguchi orthogonal array design identified the local optimum enzymatic activity ratio for Erg12:Erg8:Erg19:Idi:IspA to be 100∶100∶1∶25∶5, with a constant concentration of amorpha-4,11-diene synthase (Ads, 100 mg/L). The model also identified an unexpected inhibitory effect of farnesyl pyrophosphate synthase (IspA), where the activity was negatively correlated with AD yield. This was due to the precipitation of farnesyl pyrophosphate (FPP), the product of IspA. Response surface methodology was then used to optimize IspA and Ads activities simultaneously so as to minimize the accumulation of FPP and the result showed that Ads to be a critical factor. By increasing the concentration of Ads, a complete conversion (∼100%) of mevalonic acid (MVA) to AD was achieved. Monovalent ions and pH were effective means of enhancing the specific Ads activity and specific AD yield significantly. The results from this study represent the first in vitro reconstitution of the mevalonate pathway for the production of an isoprenoid and the approaches developed herein may be used to produce other isopentenyl pyrophosphate (IPP)/dimethylallyl pyrophosphate (DMAPP) based products.
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Chou FM, Chen PH, Wei GT. Evaluation and Measurement of Asymmetric Factor of a Basic Compound on C 18Bonded Silica in Supercritical Fluid Chromatography with Orthogonal Array Design. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201100257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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30
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Xylitol production by NAD+-dependent xylitol dehydrogenase (xdhA)- and l-arabitol-4-dehydrogenase (ladA)-disrupted mutants of Aspergillus oryzae. J Biosci Bioeng 2013; 115:353-9. [DOI: 10.1016/j.jbiosc.2012.10.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 10/10/2012] [Accepted: 10/19/2012] [Indexed: 11/22/2022]
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31
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Mahmoudi F, Saljoughi E, Mousavi SM. Promotion of polysulfone membrane by thermal-mechanical stretching process. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0096-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Zhang X, Yang L, Mester Z. Determination of amino acids in selenium-enriched yeast by gas chromatography–mass spectrometry after microwave assisted hydrolysis. Anal Chim Acta 2012; 744:54-9. [DOI: 10.1016/j.aca.2012.07.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Revised: 06/12/2012] [Accepted: 07/10/2012] [Indexed: 11/30/2022]
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33
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Optimisation of flavour ester biosynthesis in an aqueous system of coconut cream and fusel oil catalysed by lipase. Food Chem 2012; 135:2714-20. [PMID: 22980863 DOI: 10.1016/j.foodchem.2012.06.119] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 06/15/2012] [Accepted: 06/21/2012] [Indexed: 11/21/2022]
Abstract
Coconut cream and fusel oil, two low-cost natural substances, were used as starting materials for the biosynthesis of flavour-active octanoic acid esters (ethyl-, butyl-, isobutyl- and (iso)amyl octanoate) using lipase Palatase as the biocatalyst. The Taguchi design method was used for the first time to optimize the biosynthesis of esters by a lipase in an aqueous system of coconut cream and fusel oil. Temperature, time and enzyme amount were found to be statistically significant factors and the optimal conditions were determined to be as follows: temperature 30°C, fusel oil concentration 9% (v/w), reaction time 24h, pH 6.2 and enzyme amount 0.26 g. Under the optimised conditions, a yield of 14.25mg/g (based on cream weight) and signal-to-noise (S/N) ratio of 23.07 dB were obtained. The results indicate that the Taguchi design method was an efficient and systematic approach to the optimisation of lipase-catalysed biological processes.
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Beigi L, Karbalaei-Heidari HR, Kharrati-Kopaei M. Optimization of an extracellular zinc-metalloprotease (SVP2) expression in Escherichia coli BL21 (DE3) using response surface methodology. Protein Expr Purif 2012; 84:161-6. [PMID: 22609736 DOI: 10.1016/j.pep.2012.05.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 05/06/2012] [Accepted: 05/08/2012] [Indexed: 11/29/2022]
Abstract
In this work, SVP2 from Salinivibrio proteolyticus strain AF-2004, a zinc metalloprotease with suitable biotechnological applications, was cloned for expression at high levels in Escherichia coli with the intention of changing culture conditions to generate a stable extracellular enzyme extract. The complete ORF of SVP2 gene was heterologously expressed in E. coli BL21 (DE3) by using pQE-80L expression vector system. In initial step, the effect of seven factors include: incubation temperature, peptone and yeast extract concentration, cell density (OD600) before induction, inducer (IPTG) concentration, induction time, and Ca(2+) ion concentrations on extracellular recombinant SVP2 expression and stability were investigated. The primary results revealed that the IPTG concentration, Ca(2+) ion concentration and induction time are the most important effectors on protease secretion by recombinant E. coli BL21. Central composite design experiment in the following showed that the maximum protease activity (522 U/ml) was achieved in 0.0089 mM IPTG for 24h at 30 °C, an OD600 of 2, 0.5% of peptone and yeast extract, and a Ca(2+) ion concentration of 1.3 mM. The results exhibited that the minimum level of IPTG concentration along with high cell density and medium level of Ca(2+) with prolonged induction time provided the best culture condition for maximum extracellular production of heterologous protease SVP2 in E. coli expression system.
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Affiliation(s)
- Laleh Beigi
- Molecular Biotechnology Lab., Department of Biology, Faculty of Sciences, Shiraz University, P.O. Box 71467-13565 Shiraz, Iran
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35
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Woo TH. Nuclear safeguard assessment in nuclear power plants (NPPs) using loss function with modified random numbers. ANN NUCL ENERGY 2012. [DOI: 10.1016/j.anucene.2011.12.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Corynebacterium glutamicum as a potent biocatalyst for the bioconversion of pentose sugars to value-added products. Appl Microbiol Biotechnol 2011; 93:95-106. [DOI: 10.1007/s00253-011-3686-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 09/22/2011] [Accepted: 10/28/2011] [Indexed: 11/25/2022]
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Synthesis, production, and biotechnological applications of exopolysaccharides and polyhydroxyalkanoates by archaea. ARCHAEA-AN INTERNATIONAL MICROBIOLOGICAL JOURNAL 2011; 2011:693253. [PMID: 22007151 PMCID: PMC3191746 DOI: 10.1155/2011/693253] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Accepted: 07/11/2011] [Indexed: 11/18/2022]
Abstract
Extreme environments, generally characterized by atypical temperatures, pH, pressure, salinity, toxicity, and radiation levels, are inhabited by various microorganisms specifically adapted to these particular conditions, called extremophiles. Among these, the microorganisms belonging to the Archaea domain are of significant biotechnological importance as their biopolymers possess unique properties that offer insights into their biology and evolution. Particular attention has been devoted to two main types of biopolymers produced by such peculiar microorganisms, that is, the extracellular polysaccharides (EPSs), considered as a protection against desiccation and predation, and the endocellular polyhydroxyalkanoates (PHAs) that provide an internal reserve of carbon and energy. Here, we report the composition, biosynthesis, and production of EPSs and PHAs by different archaeal species.
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Sirisansaneeyakul S, Singhasuwan S, Choorit W, Phoopat N, Garcia JL, Chisti Y. Photoautotrophic production of lipids by some Chlorella strains. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2011; 13:928-941. [PMID: 21222135 DOI: 10.1007/s10126-010-9355-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 12/22/2010] [Indexed: 05/30/2023]
Abstract
The microalgae Chlorella protothecoides UTEX 25, Chlorella sp. TISTR 8991, and Chlorella sp. TISTR 8990 were compared for use in the production of biomass and lipids under photoautotrophic conditions. Chlorella sp. TISTR 8990 was shown to be potentially suitable for lipid production at 30°C in a culture medium that contained only inorganic salts. For Chlorella sp. TISTR 8990 in optimal conditions in a stirred tank photobioreactor, the lipid productivity was 2.3 mg L(-1) h(-1) and after 14 days the biomass contained more than 30% lipids by dry weight. To attain this, the nitrogen was provided as KNO(3) at an initial concentration of 2.05 g L(-1) and chelated ferric iron was added at a concentration of 1.2 × 10(-5) mol L(-1) on the ninth day. Under the same conditions in culture tubes (36 mm outer diameter), the biomass productivity was 2.8-fold greater than in the photobioreactor (0.125 m in diameter), but the lipid productivity was only 1.2-fold higher. Thus, the average low-light level in the photobioreactor actually increased the biomass specific lipid production compared to the culture tubes. A light-limited growth model closely agreed with the experimental profiles of biomass production, nitrogen consumption, and lipid production in the photobioreactor.
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Affiliation(s)
- Sarote Sirisansaneeyakul
- Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Bangkok, 10900, Thailand.
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Uysal E, Akcan N, Baysal Z, Uyar F. Optimization of α-amylase production by Bacillus subtilis RSKK96: using the Taguchi experimental design approach. Prep Biochem Biotechnol 2011; 41:84-93. [PMID: 21229466 DOI: 10.1080/10826068.2010.534333] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In this study, the Taguchi experimental design was applied to optimize the conditions for α-amylase production by Bacillus subtilis RSKK96, which was purchased from Refik Saydam Hifzissihha Industry (RSHM). Four factors, namely, carbon source, nitrogen source, amino acid, and fermentation time, each at four levels, were selected, and an orthogonal array layout of L(16) (4(5)) was performed. The model equation obtained was validated experimentally at maximum casein (1%), corn meal (1%), and glutamic acid (0.01%) concentrations with incubation time to 72 h in the presence of 1% inoculum density. Point prediction of the design showed that maximum α-amylase production of 503.26 U/mg was achieved under optimal experimental conditions.
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Affiliation(s)
- Ersin Uysal
- Dicle University, Diyarbakır Vocational School, Diyarbakır, Turkey
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He X, Hägg MB. Optimization of Carbonization Process for Preparation of High Performance Hollow Fiber Carbon Membranes. Ind Eng Chem Res 2011. [DOI: 10.1021/ie2003279] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xuezhong He
- Department of Chemical Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - May-Britt Hägg
- Department of Chemical Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
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41
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Adnani A, Basri M, Chaibakhsh N, Ahangar HA, Salleh AB, Rahman RNZRA, Abdul Rahman MB. Chemometric analysis of lipase-catalyzed synthesis of xylitol esters in a solvent-free system. Carbohydr Res 2011; 346:472-9. [DOI: 10.1016/j.carres.2010.12.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 12/28/2010] [Accepted: 12/29/2010] [Indexed: 10/18/2022]
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42
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Strategies of poly(3-hydroxybutyrate) synthesis by Haloarcula sp. IRU1 utilizing glucose as carbon source: Optimization of culture conditions by Taguchi methodology. Int J Biol Macromol 2010; 47:632-4. [DOI: 10.1016/j.ijbiomac.2010.08.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Revised: 08/08/2010] [Accepted: 08/12/2010] [Indexed: 11/21/2022]
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43
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Ashengroph M, Nahvi I, Zarkesh-Esfahani H, Momenbeik F. Optimization of media composition for improving conversion of isoeugenol into vanillin with Pseudomonas sp. strain KOB10 using the Taguchi method. BIOCATAL BIOTRANSFOR 2010. [DOI: 10.3109/10242422.2010.530660] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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44
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Shokri D, Emtiazi G. Indole-3-acetic acid (IAA) production in symbiotic and non-symbiotic nitrogen-fixing bacteria and its optimization by Taguchi design. Curr Microbiol 2010; 61:217-25. [PMID: 20526603 DOI: 10.1007/s00284-010-9600-y] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Accepted: 01/21/2010] [Indexed: 11/26/2022]
Abstract
Production of Indole-3-acetic acid (IAA) in 35 different symbiotic and non-symbiotic nitrogen-fixing bacteria strains isolated from soil and plant roots was studied and assayed by chromatography and colorimetric methods. These bacteria included Agrobacterium, Paenibacillus, Rhizobium, Klebsiella oxytoca, and Azotobacter. The best general medium and synergism effects of isolates for IAA production were investigated. Effects of different variables containing physical parameters and key media components and optimization of condition for IAA production were performed using the Design of Experiments. Qualitek-4 (W32b) software for automatic design and analysis of the experiments, both based on Taguchi method was used. The results showed that Rhizobium strains, symbiotic, and Paenibacillus non-symbiotic bacteria yielded the highest concentrations of IAA (in the range of 5.23-0.27 and 4.90-0.19 ppm IAA/mg biomass, respectively) and IAA production was increased by synergism effect of them. Yeast Extract Mannitol medium supplemented with L-tryptophan was the best general medium for IAA production. The analysis of experimental data using Taguchi method indicated that nitrogen source is very prominent variable in affecting the yield and mannitol as carbon source, potassium nitrate (1%), and L-tryptophan (3 g/l) as nitrogen sources after 72-h incubation at 30 degrees C were the optimum conditions for production of IAA. 5.89 ppm IAA/mg biomass was produced under these optimal conditions.
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Affiliation(s)
- Dariush Shokri
- Department of Biology, School of Sciences, University of Isfahan, Isfahan, Iran.
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45
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46
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Optimization of the BoNT/A-Hc expression in recombinantEscherichia coliusing the Taguchi statistical method. Biotechnol Appl Biochem 2010; 56:35-42. [DOI: 10.1042/ba20090315] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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47
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Production and optimization of polygalacturonase from mango (Mangifera indica L.) peel using Fusarium moniliforme in solid state fermentation. World J Microbiol Biotechnol 2010. [DOI: 10.1007/s11274-010-0380-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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48
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Sen S, Venkata Dasu V, Mandal B. Medium development for enhanced production of alkaline protease from a newly isolated Bacillus pseudofirmus SVB1. ASIA-PAC J CHEM ENG 2009. [DOI: 10.1002/apj.417] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Lakshmi GS, Rao CS, Rao RS, Hobbs PJ, Prakasham RS. Enhanced production of xylanase by a newly isolated Aspergillus terreus under solid state fermentation using palm industrial waste: A statistical optimization. Biochem Eng J 2009. [DOI: 10.1016/j.bej.2009.08.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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50
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Mahalaxmi Y, Sathish T, Prakasham RS. Development of balanced medium composition for improved rifamycin B production by isolated Amycolatopsis sp. RSP-3. Lett Appl Microbiol 2009; 49:533-8. [PMID: 19793193 DOI: 10.1111/j.1472-765x.2009.02701.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM To develop optimum fermentation environment for enhanced rifamycin B production by isolated Amycolatopsis sp. RSP-3. METHODS AND RESULTS The impact of different fermentation parameters on rifamycin B production by isolated Amycolatopsis sp. RSP-3 was investigated using Taguchi methodology. Controlling fermentation factors were selected based on one variable at a time methodology. The isolated strain revealed more than 25% higher production compared to literature reports. Five different nutritional components (soyabean meal, glucose, potassium nitrate, calcium carbonate and barbital) and inoculum concentration showed impact on rifamycin B production at individual and interactive level. At optimized environment, 65% contribution was observed from selected fermentation parameters. CONCLUSIONS Soyabean meal and calcium carbonate were the most significant factors among the selected factors followed by barbital and potassium nitrate. Glucose, however, showed the least significance on rifamycin B production with this strain. A maximum of 5.12 g l(-1) rifamycin B production was achieved with optimized medium containing (g l(-1)) soyabean meal, 27; glucose, 100; potassium nitrate, 4; calcium carbonate, 3 and barbital, 1.2. SIGNIFICANCE AND IMPACT OF THE STUDY The present study signifies identification of balanced medium component concentrations for improved rifamycin B production by isolated Amycolatopsis sp. RSP-3. This strain requires organic and inorganic nitrogen sources for effective product yield. Yet at individual level, organic nitrogen source has c. nine-fold higher influence compared to inorganic one.
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Affiliation(s)
- Y Mahalaxmi
- Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Hyderabad, India
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