1
|
Qian J, Gong J, Xu Z, Jin J, Shi J. Significant improvement in conversion efficiency of isonicotinic acid by immobilization of cells via a novel microsphere preparation instrument. BIORESOURCE TECHNOLOGY 2021; 320:124307. [PMID: 33157446 DOI: 10.1016/j.biortech.2020.124307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 06/11/2023]
Abstract
An instrument for the automatic preparation of microspheres was designed and manufactured, and by which cells were immobilized as efficient biocatalyst with small particle diameter, high crosslinking uniformity, and high porosity. The concentration of polymer solution, crosslinking agent and other conditions for preparing the cells microspheres were determined, and the conversion conditions of isonicotinic acid from 4-cyanopyridine were optimized to minimize mass-transfer limitations, and improve thermal and storage stability. The immobilized cells microspheres, which were continuously used for 23 batches, showed a total transformation capacity of 4.6 mol/L 4-cyanopyridine and a cumulative mass of 566.31 g/L of isonicotinic acid, which demonstrated the potential of the durable biocatalyst with efficient conversion capacity.
Collapse
Affiliation(s)
- Jianying Qian
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Jinsong Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Zhenghong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Jian Jin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China.
| | - Jinsong Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China.
| |
Collapse
|
2
|
Mareya TM, Coady TM, O'Reilly C, Kinsella M, Coffey L, Lennon CM. Process Optimisation Studies and Aminonitrile Substrate Evaluation of Rhodococcus erythropolis SET1, A Nitrile Hydrolyzing Bacterium. ChemistryOpen 2020; 9:512-520. [PMID: 32346499 PMCID: PMC7184877 DOI: 10.1002/open.202000088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Indexed: 11/16/2022] Open
Abstract
A comprehensive series of optimization studies including pH, solvent and temperature were completed on the nitrile hydrolyzing Rhodococcus erythropolis bacterium SET1 with the substrate 3-hydroxybutyronitrile. These identified temperature of 25 °C and pH of 7 as the best conditions to retain enantioselectivity and activity. The effect of the addition of organic solvents to the biotransformation mixture was also determined. The results of the study suggested that SET1 is suitable for use in selected organo-aqueous media at specific ratios only. The functional group tolerance of the isolate with unprotected and protected β-aminonitriles, structural analogues of β-hydroxynitriles was also investigated with disappointingly poor isolated yields and selectivity obtained. The isolate was further evaluated with the α- aminonitrile phenylglycinonitrile generating acid in excellent yield and ee (>99 % (S) - isomer and 50 % yield). A series of pH studies with this substrate indicated pH 7 to be the optimum pH to avoid product and substrate degradation.
Collapse
Affiliation(s)
- Tatenda M. Mareya
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Tracey M. Coady
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Catherine O'Reilly
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Michael Kinsella
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Lee Coffey
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Claire M. Lennon
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| |
Collapse
|
3
|
Thakur N, Kumar V, Thakur S, Sharma N, Sheetal, Bhalla TC. Biotransformation of 4-hydroxyphenylacetonitrile to 4-hydroxyphenylacetic acid using whole cell arylacetonitrilase of Alcaligenes faecalis MTCC 12629. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.07.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
4
|
Production of (R)-(−)-mandelic acid with nitrilase immobilized on D155 resin modified by l -lysine. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2017.07.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
5
|
Su E, Lu C, Ma X, Cai W, Zhu S. High-level production ofArthrobacter aurescensCYC705 nitrilase inEscherichia colifor biosynthesis of iminodiacetic acid. Biotechnol Appl Biochem 2015; 63:564-71. [DOI: 10.1002/bab.1408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 06/16/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Erzheng Su
- Enzyme and Fermentation Technology Laboratory; College of Light Industry Science and Engineering; Nanjing Forestry University; Nanjing People's Republic of China
| | - Chao Lu
- Enzyme and Fermentation Technology Laboratory; College of Light Industry Science and Engineering; Nanjing Forestry University; Nanjing People's Republic of China
| | - Xiaoqiang Ma
- State Key Laboratory of Bioreactor Engineering; New World Institute of Biotechnology; East China University of Science and Technology; Shanghai People's Republic of China
| | - Wenwen Cai
- State Key Laboratory of Bioreactor Engineering; New World Institute of Biotechnology; East China University of Science and Technology; Shanghai People's Republic of China
| | - Shujing Zhu
- State Key Laboratory of Bioreactor Engineering; New World Institute of Biotechnology; East China University of Science and Technology; Shanghai People's Republic of China
| |
Collapse
|
6
|
Sohoni SV, Nelapati D, Sathe S, Javadekar-Subhedar V, Gaikaiwari RP, Wangikar PP. Optimization of high cell density fermentation process for recombinant nitrilase production in E. coli. BIORESOURCE TECHNOLOGY 2015; 188:202-208. [PMID: 25739996 DOI: 10.1016/j.biortech.2015.02.038] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Revised: 02/09/2015] [Accepted: 02/10/2015] [Indexed: 06/04/2023]
Abstract
Nitrilases constitute an important class of biocatalysts for chiral synthesis. This work was undertaken with the aim to optimize nitrilase production in a host that is well-studied for protein production. Process parameters were optimized for high cell density fermentation, in batch and fed-batch modes, of Escherichia coli BL21 (DE3) expressing Pseudomonas fluorescens nitrilase with a T7 promoter based expression system. Effects of different substrates, temperature and isopropyl β-D-1-thiogalactopyranoside (IPTG) induction on nitrilase production were studied. Super optimal broth containing glycerol but without an inducer gave best results in batch mode with 32 °C as the optimal temperature. Use of IPTG led to insoluble protein and lower enzyme activity. Optimized fed-batch strategy resulted in significant improvement in specific activity as well as volumetric productivity of the enzyme. On a volumetric basis, the activity improved 40-fold compared to the unoptimized batch process.
Collapse
Affiliation(s)
- Sujata Vijay Sohoni
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India; DBT-Pan IIT Center for Bioenergy, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Dhanaraj Nelapati
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sneha Sathe
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Vaishali Javadekar-Subhedar
- Hi Tech Biosciences India Ltd., C-2, 102/103, Saudamini Complex, Right Bhusari Colony, Paud Road, Kothrud, Pune 411038, India
| | - Raghavendra P Gaikaiwari
- Hi Tech Biosciences India Ltd., C-2, 102/103, Saudamini Complex, Right Bhusari Colony, Paud Road, Kothrud, Pune 411038, India
| | - Pramod P Wangikar
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India; DBT-Pan IIT Center for Bioenergy, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India; Wadhwani Research Center for Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
| |
Collapse
|
7
|
Zhang XH, Liu ZQ, Xue YP, Zheng YG. Activity improvement of a regioselective nitrilase from Acidovorax facilis and its application in the production of 1-(cyanocyclohexyl) acetic acid. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.08.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
8
|
Evaluation of Production Parameters for Maximum Lipase Production by P. stutzeri MTCC 5618 and Scale-Up in Bioreactor. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/208462] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Intracellular lipase producer screened from the library available in the laboratory, identified through 16S rRNA as Pseudomonas stutzeri, was studied for maximum enzyme production in shake flask. The work was intended to evaluate the effect of different physicochemical factors like carbon, nitrogen, metal ions, surfactant, inoculum, pH, temperature, agitation, and aeration on lipase production. Optimized media showed 1.62-fold increase in lipase production when compared to basal media. Scale-up of lipase in in situ bioreactor showed reduction in fermentation time in both basal and optimized media, giving 41 and 99 U/mg of lipase activity after 48 h of fermentation.
Collapse
|
9
|
Liu ZQ, Zhang XH, Xue YP, Xu M, Zheng YG. Improvement of Alcaligenes faecalis nitrilase by gene site saturation mutagenesis and its application in stereospecific biosynthesis of (R)-(-)-mandelic acid. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:4685-4694. [PMID: 24766313 DOI: 10.1021/jf405683f] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nitrilases have recently received considerable attention as the biocatalysts for stereospecific production of carboxylic acids. To improve the activity, the nitrilase from Alcaligenes faecalis was selected for further modification by the gene site saturation mutagenesis method (GSSM), based on homology modeling and previous reports about mutations. After mutagenesis, the positive mutants were selected using a convenient two-step high-throughput screening method based on product formation and pH indicator combined with the HPLC method. After three rounds of GSSM, Mut3 (Gln196Ser/Ala284Ile) with the highest activity and ability of tolerance to the substrate was selected. As compared to the wild-type A. faecalis nitrilase, Mut3 showed 154% higher specific activity. Mut3 could retain 91.6% of its residual activity after incubation at pH 6.5 for 6 h. In a fed-batch reaction with 800 mM mandelonitrile as the substrate, the cumulative production of (R)-(-)-mandelic acid after 7.5 h of conversion reached 693 mM with an enantiomeric excess of 99%, and the space-time productivity of Mut3 was 21.50-fold higher than that of wild-type nitrilase. The Km, Vmax, and k(cat) of wild-type and Mut3 for mandelonitrile were 20.64 mM, 33.74 μmol mg(-1) min(-1), 24.45 s(-1), and 9.24 mM, 47.68 μmol mg(-1) min(-1), and 34.55 s(-1), respectively. A homology modeling and molecular docking study showed that the diameter of the catalytic tunnel of Mut3 became longer and that the tunnel volume was smaller. These structural changes are proposed to improve the hydrolytic activity and pH stability of Mut3. Mut3 has the potential for industrial applications in the upscale production of (R)-(-)-mandelic acid.
Collapse
Affiliation(s)
- Zhi-Qiang Liu
- Institute of Bioengineering, Zhejiang University of Technology , Hangzhou, Zhejiang 310014, People's Republic of China
| | | | | | | | | |
Collapse
|
10
|
Biosynthesis of Benzoylformic Acid from Benzoyl Cyanide with a New Bacterial Isolate of Brevibacterium sp. CCZU12-1. Appl Biochem Biotechnol 2014; 172:3223-33. [DOI: 10.1007/s12010-014-0764-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 01/27/2014] [Indexed: 10/25/2022]
|
11
|
Cantarella L, Gallifuoco A, Spera A, Cantarella M. Nitrile, amide and temperature effects on amidase-kinetics during acrylonitrile bioconversion by nitrile-hydratase/amidase in situ cascade system. BIORESOURCE TECHNOLOGY 2013; 142:320-328. [PMID: 23747443 DOI: 10.1016/j.biortech.2013.04.126] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 04/29/2013] [Accepted: 04/30/2013] [Indexed: 06/02/2023]
Abstract
In this study the amidase kinetics of an in situ NHase/AMase cascade system was explored as a function of operational parameters such as temperature, substrate concentration and product formation. The results indicated that controlling amidase inactivation, during acrylonitrile bioconversion, makes it possible to recover the intermediate product of the two-step reaction in almost a pure form, without using purified enzyme. It has been demonstrated, in long-term experiments performed in continuous stirred UF-membrane bioreactors, that amidase is kinetically controlled by its proper substrate, depending on the structure, and by acrylonitrile. Using acrylamide, AMase-stability is temperature dependent (5°C, kd=0.008 h(-1); 30°C kd=0.023 h(-1)). Using benzamide, amidase is thermally stable up to 50°C and no substrate inhibition/inactivation occurs. With acrylonitrile, AMase-activity and -stability remain unchanged at concentrations <200 mM but at 200 mM, 35°C, after 70 h process, 90% irreversible inactivation occurs as no AMase-activity on benzamide revives.
Collapse
Affiliation(s)
- Laura Cantarella
- Department of Civil and Mechanical Engineering, University of Cassino and of Lazio Meridionale, Via Di Biasio 43, 03043 Cassino (FR), Italy
| | | | | | | |
Collapse
|
12
|
Xue YP, Xu M, Chen HS, Liu ZQ, Wang YJ, Zheng YG. A Novel Integrated Bioprocess for Efficient Production of (R)-(−)-Mandelic Acid with Immobilized Alcaligenes faecalis ZJUTB10. Org Process Res Dev 2013. [DOI: 10.1021/op3001993] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ya-Ping Xue
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou
310014, Zhejiang, China
- Engineering Research
Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou
310014, Zhejiang, China
| | - Ming Xu
- Zhejiang Laiyi Biotechnology Co., Ltd., Shengzhou 312400, Zhejiang, China
| | - Hong-Sheng Chen
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou
310014, Zhejiang, China
- Engineering Research
Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou
310014, Zhejiang, China
| | - Zhi-Qiang Liu
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou
310014, Zhejiang, China
- Engineering Research
Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou
310014, Zhejiang, China
| | - Ya-Jun Wang
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou
310014, Zhejiang, China
- Engineering Research
Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou
310014, Zhejiang, China
| | - Yu-Guo Zheng
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou
310014, Zhejiang, China
- Engineering Research
Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou
310014, Zhejiang, China
| |
Collapse
|
13
|
Chacko S, Ramteke PW, Joseph B. A comparative study on the production of amidase using immobilized and dehydrated immobilized cells of Pseudomonas putida MTCC 6809. J Genet Eng Biotechnol 2012. [DOI: 10.1016/j.jgeb.2012.01.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
14
|
Pawar SV, Meena VS, Kaushik S, Kamble A, Kumar S, Chisti Y, Banerjee UC. Stereo-selective conversion of mandelonitrile to (R)-(−)-mandelic acid using immobilized cells of recombinant Escherichia coli. 3 Biotech 2012. [PMCID: PMC3482447 DOI: 10.1007/s13205-012-0058-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Immobilized cells of a recombinant Escherichia coli expressing nitrilase from Pseudomonas putida were used to catalyze the hydrolysis of mandelonitrile (2-hydroxy-2-phenylacetonitrile) to (R)-(−)-mandelic acid. The cells had been immobilized by entrapment in an alginate matrix. Conditions for the hydrolysis reaction were optimized in shake flasks and in a packed bed reactor. In shake flasks the best conditions for the reaction were a temperature of 40 °C, pH 8, biocatalyst bead diameter of 4.3 mm, sodium alginate concentration in the gel matrix of 2 % (w/v, g/100 mL), a cell dry mass concentration in the bead matrix of 20 mg/mL, an initial substrate concentration of 50 mM and a reaction time of 60 min. Under these conditions, the conversion of mandelonitrile was nearly 95 %. In the packed bed reactor, a feed flow rate of 20 mL/h at a substrate concentration of 200 mM proved to be the best at 40 °C, pH 8, using 4.3 mm beads (2 % w/v sodium alginate in the gel matrix, 20 mg dry cell concentration per mL of gel matrix). This feed flow rate corresponded to a residence time of 0.975 h in the packed bed.
Collapse
Affiliation(s)
- Sandip V. Pawar
- Department of Pharmaceutical Technology (Biotechnology), National Institute of Pharmaceutical Education and Research, Sector-67, SAS Nagar, 160 062 Punjab, India
| | - Vachan Singh Meena
- Department of Pharmaceutical Technology (Biotechnology), National Institute of Pharmaceutical Education and Research, Sector-67, SAS Nagar, 160 062 Punjab, India
| | - Shubhangi Kaushik
- Department of Pharmaceutical Technology (Biotechnology), National Institute of Pharmaceutical Education and Research, Sector-67, SAS Nagar, 160 062 Punjab, India
| | - Ashwini Kamble
- Department of Pharmaceutical Technology (Biotechnology), National Institute of Pharmaceutical Education and Research, Sector-67, SAS Nagar, 160 062 Punjab, India
| | - Sandeep Kumar
- Department of Pharmaceutical Technology (Biotechnology), National Institute of Pharmaceutical Education and Research, Sector-67, SAS Nagar, 160 062 Punjab, India
| | - Yusuf Chisti
- School of Engineering, Massey University, Private Bag 11 222, Palmerston North, New Zealand
| | - U. C. Banerjee
- Department of Pharmaceutical Technology (Biotechnology), National Institute of Pharmaceutical Education and Research, Sector-67, SAS Nagar, 160 062 Punjab, India
| |
Collapse
|
15
|
Velankar H, Clarke KG, Preez RD, Cowan DA, Burton SG. Developments in nitrile and amide biotransformation processes. Trends Biotechnol 2010; 28:561-9. [DOI: 10.1016/j.tibtech.2010.08.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 07/29/2010] [Accepted: 08/13/2010] [Indexed: 10/19/2022]
|
16
|
He YC, Ma CL, Xu JH, Zhou L. A high-throughput screening strategy for nitrile-hydrolyzing enzymes based on ferric hydroxamate spectrophotometry. Appl Microbiol Biotechnol 2010; 89:817-23. [PMID: 21038095 DOI: 10.1007/s00253-010-2977-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 10/18/2010] [Accepted: 10/18/2010] [Indexed: 09/29/2022]
Abstract
Nitrile-hydrolyzing enzymes (nitrilase or nitrile hydratase/amidase) have been widely used in the pharmaceutical industry for the production of carboxylic acids and their derivatives, and it is important to build a method for screening for nitrile-hydrolyzing enzymes. In this paper, a simple, rapid, and high-throughput screening method based on the ferric hydroxamate spectrophotometry has been proposed. To validate the accuracy of this screening strategy, the nitrilases from Rhodococcus erythropolis CGMCC 1.2362 and Alcaligenes sp. ECU0401 were used for evaluating the method. As a result, the accuracy for assaying aliphatic and aromatic carboxylic acids was as high as the HPLC-based method. Therefore, the method may be potentially used in the selection of microorganisms or engineered proteins with nitrile-hydrolyzing enzymes.
Collapse
Affiliation(s)
- Yu-Cai He
- Changzhou University, People's Republic of China.
| | | | | | | |
Collapse
|
17
|
Citrus peel influences the production of an extracellular naringinase by Staphylococcus xylosus MAK2 in a stirred tank reactor. Appl Microbiol Biotechnol 2010; 89:715-22. [PMID: 20922381 DOI: 10.1007/s00253-010-2897-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 09/17/2010] [Accepted: 09/18/2010] [Indexed: 10/19/2022]
Abstract
Staphylococcus xylosus MAK2, Gram-positive coccus, a nonpathogenic member of the coagulase-negative Staphylococcus family was isolated from soil and used to produce naringinase in a stirred tank reactor. An initial medium at pH 5.5 and a cultivation temperature of 30°C was found to be optimal for enzyme production. The addition of Ca(+)² caused stimulation of enzyme activity. The effect of various physico-chemical parameters, such as pH, temperature, agitation, and inducer concentration was studied. The enzyme production was enhanced by the addition of citrus peel powder (CPP) in the optimized medium. A twofold increase in naringinase production was achieved using different technological combinations. The process optimization using technological combinations allowed rapid optimization of large number of variables, which significantly improved enzyme production in a 5-l reactor in 34 h. An increase in sugar concentration (15 g l⁻¹) in the fermentation medium further increased naringinase production (8.9 IU ml⁻¹) in the bioreactor. Thus, availability of naringinase renders it attractive for potential biotechnological applications in citrus processing industry.
Collapse
|
18
|
Liu JF, Zhang ZJ, Li AT, Pan J, Xu JH. Significantly enhanced production of recombinant nitrilase by optimization of culture conditions and glycerol feeding. Appl Microbiol Biotechnol 2010; 89:665-72. [DOI: 10.1007/s00253-010-2866-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Revised: 08/26/2010] [Accepted: 08/31/2010] [Indexed: 11/24/2022]
|
19
|
Biocatalytic synthesis of (R)-(−)-mandelic acid from racemic mandelonitrile by cetyltrimethylammonium bromide-permeabilized cells of Alcaligenes faecalis ECU0401. J Ind Microbiol Biotechnol 2010; 37:741-50. [DOI: 10.1007/s10295-010-0720-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Accepted: 03/30/2010] [Indexed: 10/19/2022]
|
20
|
Shen M, Liu ZQ, Zheng YG, Shen YC. Enhancing Endo-nitrilase production by a newly isolated Arthrobacter nitroguajacolicus ZJUTB06-99 through optimization of culture medium. BIOTECHNOL BIOPROC E 2010. [DOI: 10.1007/s12257-008-0252-8] [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]
|
21
|
Bioproduction of Glycolic Acid from Glycolonitrile with a New Bacterial Isolate of Alcaligenes sp. ECU0401. Appl Biochem Biotechnol 2009; 160:1428-40. [DOI: 10.1007/s12010-009-8607-y] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2009] [Accepted: 03/09/2009] [Indexed: 11/30/2022]
|
22
|
Gummadi SN, Dash SS, Devarai S. Optimization of production of caffeine demethylase by Pseudomonas sp. in a bioreactor. J Ind Microbiol Biotechnol 2009; 36:713-20. [DOI: 10.1007/s10295-009-0541-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2008] [Accepted: 01/27/2009] [Indexed: 11/29/2022]
|