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Dotsenko A, Denisenko J, Zorov I, Wasserman L, Semenova M, Korolev A, Rozhkova A, Sinitsyn A. Single substitution in α-helix of active center enhanced thermostability of Aspergillus awamori exo-inulinase. J Mol Graph Model 2023; 119:108381. [PMID: 36473387 DOI: 10.1016/j.jmgm.2022.108381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/16/2022] [Accepted: 11/22/2022] [Indexed: 11/30/2022]
Abstract
Exo-inulinases are applied in inulin hydrolysis and production of feed additives and need to be stable at temperatures of 60-95 °C. Aspergillus awamori exo-inulinase Inu1 is considerably thermostable, with a Tm of 73.2 °C. However, the thermostability of the enzyme should be improved. A single substitution G338A in α-helix in the active center of the enzyme provided a 3.5 °C improvement in Tm. The time of half-life at 70 °C and 80 °C was increased in 5.7- and 2.7-times, respectively, compared to wild-type. Molecular dynamics simulations demonstrated that the substitution G338A caused a decrease in RMSF not only for the α-helix 337-YAANI-341, but also for the catalytically active residues D41 and E241 and the amino acid residues forming the cleft of the active center. Calculations with Constraint Network Analysis for the variant G338A showed the increase in the stability of intramolecular clusters.
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Affiliation(s)
- Anna Dotsenko
- FSI Federal Research Centre Fundamentals of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia.
| | - Jury Denisenko
- FSI Federal Research Centre Fundamentals of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia.
| | - Ivan Zorov
- FSI Federal Research Centre Fundamentals of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia; Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia.
| | - Luybov Wasserman
- Emanuel Institute of Biochemical Physics RAS, Moscow, 119334, Russia.
| | - Margarita Semenova
- FSI Federal Research Centre Fundamentals of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia.
| | - Andrei Korolev
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia.
| | - Aleksandra Rozhkova
- FSI Federal Research Centre Fundamentals of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia; Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia.
| | - Arkady Sinitsyn
- FSI Federal Research Centre Fundamentals of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia; Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia.
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Stojanović S, Ristović M, Stepanović J, Margetić A, Duduk B, Vujčić Z, Dojnov B. Aspergillus welwitschiae inulinase enzyme cocktails obtained on agro-material inducers for the purpose of fructooligosaccharides production. Food Res Int 2022; 160:111755. [DOI: 10.1016/j.foodres.2022.111755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/11/2022] [Accepted: 07/26/2022] [Indexed: 11/04/2022]
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Ma J, Li T, Tan H, Liu W, Yin H. The Important Roles Played in Substrate Binding of Aromatic Amino Acids in Exo-Inulinase From Kluyveromyces cicerisporus CBS 4857. Front Mol Biosci 2020; 7:569797. [PMID: 33102520 PMCID: PMC7545266 DOI: 10.3389/fmolb.2020.569797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 09/03/2020] [Indexed: 11/13/2022] Open
Abstract
Inulinase is a member of the glycoside hydrolase family 32 (GH32). It catalyzes the randomly hydrolyzation of 2,1-β-D-fructosidic linkages in inulin and plays a role in the production of high-fructose syrup. In this study, detailed roles of the conserved residues W79, F113, M117, R181, C239, and W334 of the exo-inulinase from Kluyveromyces cicerisporus CBS4857 (KcINU1) in substrate binding and stabilization were evaluated by in silico analysis and site-directed mutagenesis. These residues belong to the conserved WG, FSGSMV, RDP, ECP, and WQY regions of the GH32 and are located around the catalytic pocket of KcINU1. Zymogram assay showed relatively weaker band for F113W and similar band for M117A compared to the wild-type enzyme toward inulin and sucrose, whereas all other variants showed no observable stain on the native polyacrylamide gel electrophoresis. These results were further confirmed with the dinitrosalicylic acid colorimetric method. It showed that the residual activities of F113W toward inulin and sucrose were 33.8 ± 3.3% and 96.2 ± 5.5%, respectively, and that of M117A were 103.8 ± 1.3% and 166.5 ± 12%, respectively. Results from fluorescence spectra indicated that there is a significant conformational change that happened in F113W compared to the wild-type enzyme, while M117A exhibited limited impact although the quenching effect was increased.
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Affiliation(s)
- Junyan Ma
- Natural Products and Glyco-Biotechnology Research Group, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.,Medical College, Dalian University, Dalian, China
| | - Tang Li
- Natural Products and Glyco-Biotechnology Research Group, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Haidong Tan
- Natural Products and Glyco-Biotechnology Research Group, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Wujun Liu
- Natural Products and Glyco-Biotechnology Research Group, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.,Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Heng Yin
- Natural Products and Glyco-Biotechnology Research Group, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
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Atzler JJ, Ispiryan L, Gallagher E, Sahin AW, Zannini E, Arendt EK. Enzymatic degradation of FODMAPS via application of β-fructofuranosidases and α-galactosidases- A fundamental study. J Cereal Sci 2020. [DOI: 10.1016/j.jcs.2020.102993] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Kawee-Ai A, Chaisuwan W, Manassa A, Seesuriyachan P. Effects of ultra-high pressure on effective synthesis of fructooligosaccharides and fructotransferase activity using Pectinex Ultra SP-L and inulinase from Aspergillus niger. Prep Biochem Biotechnol 2019; 49:649-658. [PMID: 31012794 DOI: 10.1080/10826068.2019.1599392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In this study, various levels of ultra-high pressure (UHP) were combined with the enzymatic synthesis of the fructooligosaccharide (FOS) using Pectinex Ultra SP-L and inulinase. The combination enhanced the FOS yields up to 2.5- and 1.5-fold, respectively, compared to atmospheric condition (0.1 MPa). However, the enzymatic reaction was dependent on the levels of pressure, the reaction times, and the initial sucrose concentrations. The combined UHP and inulinase showed that the maximum FOS yield (71.81%) was obtained under UHP at 200 MPa for 20 min with 300 g/L of initial sucrose as a substrate, while the FOS yield (57.13%) using Pectinex Ultra SP-L was obtained under UHP at 300 MPa for 15 min with 600 g/L of initial sucrose as a substrate. The FOS composition produced by Pectinex Ultra SP-L under the UHP was 1-kestose (GF2), nystose (GF3), and 1F-fructofuranosylnystose (GF4), whereas the FOS produced by inulinase composed of only GF2 and GF3. The combined UHP is a useful tool in the industrial application for FOS production. Highlights UHP activated the activity of Pectinex Ultra SP-L yet inactivated inulinase Pressure level, time, and sucrose concentration significantly affect FOS yields under UHP UHP enhanced FOS production with time-saving benefits within 15-20 min.
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Affiliation(s)
- Arthitaya Kawee-Ai
- a Faculty of Agro-Industry , Chiang Mai University , Mea Hea, Mueang Chiang Mai , Chiang Mai , Thailand
| | - Worraprat Chaisuwan
- a Faculty of Agro-Industry , Chiang Mai University , Mea Hea, Mueang Chiang Mai , Chiang Mai , Thailand
| | - Apisit Manassa
- a Faculty of Agro-Industry , Chiang Mai University , Mea Hea, Mueang Chiang Mai , Chiang Mai , Thailand
| | - Phisit Seesuriyachan
- a Faculty of Agro-Industry , Chiang Mai University , Mea Hea, Mueang Chiang Mai , Chiang Mai , Thailand
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Qiu Y, Zhu Y, Zhan Y, Zhang Y, Sha Y, Zhan Y, Xu Z, Li S, Feng X, Xu H. Systematic unravelling of the inulin hydrolase from Bacillus amyloliquefaciens for efficient conversion of inulin to poly-(γ-glutamic acid). BIOTECHNOLOGY FOR BIOFUELS 2019; 12:145. [PMID: 31210783 PMCID: PMC6563369 DOI: 10.1186/s13068-019-1485-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 06/04/2019] [Indexed: 05/23/2023]
Abstract
BACKGROUND Bacillus amyloliquefaciens NB is a newly discovered strain, which produces poly-(γ-glutamic acid) (γ-PGA) from raw extracted inulin of Jerusalem artichoke tubers; however, the underlying mechanisms remain unknown. To address this problem, we identified the inulin hydrolase in wild-type strain B. amyloliquefaciens NB. RESULTS The novel inulin hydrolase (CscA) was discovered from strain NB, with high inulinase activity (987.0 U/mg at 55 °C) and strong resistance at pH values between 8.0 and 11.0, suggesting the potential application of CscA in Jerusalem artichoke biorefinery. CscA exhibited a k cat/K m of (6.93 ± 0.27) × 103 for inulin; its enzymatic activity was stimulated by metal ions, like K+, Mn2+, or Ca2+. Similar to their role in glycoside hydrolase 32 family enzymes, the conserved Asp37, Asp161, and Glu215 residues of CscA contribute to its catalytic activity. Targeted disruption of CscA gene suppressed inulin utilization by strain NB. Overexpression of CscA significantly enhanced the γ-PGA generation by 19.2% through enhancement in inulin consumption. CONCLUSIONS The inulin hydrolase CscA is critical for inulin metabolism in B. amyloliquefaciens and indicates potential application in Jerusalem artichoke biorefinery.
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Affiliation(s)
- Yibin Qiu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Yifan Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Yijing Zhan
- Nanjing Shineking Biotech Co., Ltd, Nanjing, 210061 China
| | - Yatao Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Yuanyuan Sha
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Yijing Zhan
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Zongqi Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Sha Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Xiaohai Feng
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Hong Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
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Qiu Y, Lei P, Zhang Y, Sha Y, Zhan Y, Xu Z, Li S, Xu H, Ouyang P. Recent advances in bio-based multi-products of agricultural Jerusalem artichoke resources. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:151. [PMID: 29881456 PMCID: PMC5984348 DOI: 10.1186/s13068-018-1152-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 05/23/2018] [Indexed: 05/30/2023]
Abstract
The Jerusalem artichoke is a perennial plant that belongs to the sunflower family. As a non-grain crop, Jerusalem artichoke possesses a number of desirable characteristics that make it a valuable feedstock for biorefinery, such as inulin content, rapid growth, strong adaptability, and high yields. This review provides a comprehensive introduction to renewable Jerusalem artichoke-based biomass resources and recent advances in bio-based product conversion. Furthermore, we discuss the latest in the development of inulinase-producing microorganisms and enhanced inulin hydrolysis capacity of microbes by genetic engineering, which lead to a more cost-effective Jerusalem artichoke biorefinery. The review is aimed at promoting Jerusalem artichoke industry and new prospects for higher value-added production.
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Affiliation(s)
- Yibin Qiu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816 China
| | - Peng Lei
- Nanjing Institute for Comprehensive Utilization of Wild Plants, Nanjing, 210042 China
| | - Yatao Zhang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Yuanyuan Sha
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816 China
| | - Yijing Zhan
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816 China
| | - Zongqi Xu
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816 China
| | - Sha Li
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816 China
| | - Hong Xu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816 China
| | - Pingkai Ouyang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816 China
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8
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Chesini M, Wagner E, Baruque DJ, Vita CE, Cavalitto SF, Ghiringhelli PD, Rojas NL. High level production of a recombinant acid stable exoinulinase from Aspergillus kawachii. Protein Expr Purif 2018; 147:29-37. [PMID: 29454668 DOI: 10.1016/j.pep.2018.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 02/01/2018] [Accepted: 02/14/2018] [Indexed: 11/28/2022]
Abstract
Exoinulinases-enzymes extensively studied in recent decades because of their industrial applications-need to be produced in suitable quantities in order to meet production demands. We describe here the production of an acid-stable recombinant inulinase from Aspergillus kawachii in the Pichia pastoris system and the recombinant enzyme's biochemical characteristics and potential application to industrial processes. After an appropriate cloning strategy, this genetically engineered inulinase was successfully overproduced in fed-batch fermentations, reaching up to 840 U/ml after a 72-h cultivation. The protein, purified to homogeneity by chromatographic techniques, was obtained at a 42% yield. The following biochemical characteristics were determined: the enzyme had an optimal pH of 3, was stable for at least 3 h at 55 °C, and was inhibited in catalytic activity almost completely by Hg+2. The respective Km and Vmax for the recombinant inulinase with inulin as substrate were 1.35 mM and 2673 μmol/min/mg. The recombinant enzyme is an exoinulinase but also possesses synthetic activity (i. e., fructosyl transferase). The high level of production of this recombinant plus its relevant biochemical properties would argue that the process presented here is a possible recourse for industrial applications in carbohydrate processing.
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Affiliation(s)
- Mariana Chesini
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, Calle 50 Nº 227, CONICET, La Plata 1900, Argentina.
| | - Evelyn Wagner
- Universidad Nacional de Quilmes, CONICET, Departamento de Ciencia y Tecnología, IMBA, Roque Sáenz Peña 352, Quilmes 1876, Argentina
| | - Diego J Baruque
- Universidad Nacional de Quilmes, CONICET, Departamento de Ciencia y Tecnología, IMBA, Roque Sáenz Peña 352, Quilmes 1876, Argentina
| | - Carolina E Vita
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, Calle 50 Nº 227, CONICET, La Plata 1900, Argentina
| | - Sebastián F Cavalitto
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, Calle 50 Nº 227, CONICET, La Plata 1900, Argentina
| | - Pablo D Ghiringhelli
- Universidad Nacional de Quilmes, CONICET, Departamento de Ciencia y Tecnología, IMBA, Roque Sáenz Peña 352, Quilmes 1876, Argentina
| | - Natalia L Rojas
- Universidad Nacional de Quilmes, CONICET, Departamento de Ciencia y Tecnología, IMBA, Roque Sáenz Peña 352, Quilmes 1876, Argentina
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The importance of the non-active site and non-periodical structure located histidine residue respect to the structure and function of exo-inulinase. Int J Biol Macromol 2017; 98:542-549. [DOI: 10.1016/j.ijbiomac.2017.01.130] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 01/15/2017] [Accepted: 01/30/2017] [Indexed: 11/19/2022]
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Chen GJ, Yang JK, Peng XB, He JR. High-level secretory expression of Aspergillus exo-inulinase and its use in the preparation of fructose syrup from inulin. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2017.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Deletion of loop fragment adjacent to active site diminishes the stability and activity of exo-inulinase. Int J Biol Macromol 2016; 92:1234-1241. [DOI: 10.1016/j.ijbiomac.2016.08.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Revised: 08/04/2016] [Accepted: 08/11/2016] [Indexed: 11/20/2022]
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Rawat HK, Chand Jain S, Kango N. Production and properties of inulinase fromPenicillium sp. NFCC 2768 grown on inulin-rich vegetal infusions. BIOCATAL BIOTRANSFOR 2015. [DOI: 10.3109/10242422.2015.1018188] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Zhou J, Lu Q, Peng M, Zhang R, Mo M, Tang X, Li J, Xu B, Ding J, Huang Z. Cold-active and NaCl-tolerant exo-inulinase from a cold-adapted Arthrobacter sp. MN8 and its potential for use in the production of fructose at low temperatures. J Biosci Bioeng 2015; 119:267-74. [DOI: 10.1016/j.jbiosc.2014.08.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 07/19/2014] [Accepted: 08/07/2014] [Indexed: 01/09/2023]
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A novel low-temperature-active exo-inulinase identified based on Molecular-Activity strategy from Sphingobacterium sp. GN25 isolated from feces of Grus nigricollis. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.06.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gao J, Xu YY, Yang HM, Xu H, Xue F, Li S, Feng XH. Gene Cloning, Expression, and Characterization of an Exo-inulinase from Paenibacillus polymyxa ZJ-9. Appl Biochem Biotechnol 2014; 173:1419-30. [DOI: 10.1007/s12010-014-0950-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Accepted: 04/28/2014] [Indexed: 10/25/2022]
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Zemolin GP, Gazoni M, Zabot GL, Golunski SM, Astolfi V, Prá VD, Foletto EL, Meili L, Rosa MBD, Rosa CD, Mossi AJ, Treichel H, Mazutti MA. Immobilization of inulinase obtained by solid-state fermentation using spray-drying technology. BIOCATAL BIOTRANSFOR 2012. [DOI: 10.3109/10242422.2012.715635] [Citation(s) in RCA: 7] [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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Purification and characterization of a novel extracellular inulinase from a new yeast species Candida kutaonensis sp. nov. KRF1T. Appl Microbiol Biotechnol 2012; 96:1517-26. [DOI: 10.1007/s00253-012-4108-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Revised: 04/09/2012] [Accepted: 04/12/2012] [Indexed: 10/28/2022]
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18
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Risso FVA, Mazutti MA, Treichel H, Costa F, Maugeri F, Rodrigues MI. Assessment of fructooligosaccharides production from sucrose in aqueous and aqueous-organic systems using immobilized inulinase from Kluyveromyces marxianus NRRL Y-7571. FOOD SCIENCE AND TECHNOLOGY 2012. [DOI: 10.1590/s0101-20612012005000030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This work investigated the fructooligosaccharides (FOS) synthesis by immobilized inulinase obtained from Kluyveromyces marxianus NRRL Y-7571 in aqueous and aqueous-organic systems using sucrose as substrate. The sequential strategy of experimental design was used to optimize the FOS conversion in both systems. For the aqueous-organic system, a 2(6-2) fractional design was carried out to evaluate the effects of temperature, sucrose concentration, pH, aqueous/organic ratio, enzyme activity, and polyethylene glycol concentration. For the aqueous system, a central composite design for the enzyme activity and the sucrose concentration was carried out. The highest fructooligosaccharides yield (Y FOS) for the aqueous-organic system was 18.2 ± S0.9 wt%, at 40 ºC, pH 5.0, sucrose concentration of 60% (w/w), enzyme activity of 4 U.mL-1, and aqueous/organic ratio of 25/75 wt%. The highest Y FOS for the aqueous system was 14.6 ± 0.9 wt% at 40 ºC, pH 5.0, sucrose concentration of 60 wt%, and enzyme activity of 4.0 U.mL-1.
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Aguiar-Oliveira E, Fernandes P, Cabral JMS, Maugeri F. Characterisation of biocatalysts immobilised in niobium-a new inorganic solid support. CAN J CHEM ENG 2012. [DOI: 10.1002/cjce.21653] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Risso FVA, Mazutti MA, Costa F, Treichel H, Maugeri F, Rodrigues MI. Comparative studies of the stability of free and immobilized inulinase from Kluyveromyces marxianus NRRL Y-7571 in aqueous-organic solutions. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2010. [DOI: 10.1590/s0104-66322010000400002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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