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Wang K, Jin W, Ding Y, Lyu Y, Liu J, Yu X. Dual enzyme co-immobilization on reversibly soluble polymers for the one-pot conversion of ferulic acid from wheat bran. NEW J CHEM 2022. [DOI: 10.1039/d2nj00035k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The difficulty of using immobilized enzyme to decompose wheat bran to produce ferulic acid lies in the recovery of enzyme from solid-rich wheat bran hydrolysates. In this study, two enzymes...
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2
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Teng C, Tang H, Li X, Zhu Y, Fan G, Yang R. Production of xylo-oligosaccharides using a Streptomyces rochei xylanase immobilized on Eudragit S-100. BIOCATAL BIOTRANSFOR 2021. [DOI: 10.1080/10242422.2021.1964483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Chao Teng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, P.R. China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing, China
| | - Huihua Tang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, P.R. China
| | - Xiuting Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, P.R. China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing, China
| | - Yunping Zhu
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing, China
| | - Guangsen Fan
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing, China
| | - Ran Yang
- School of Food and Health, Beijing Technology & Business University (BTBU), Beijing, China
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3
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Tacias-Pascacio VG, Morellon-Sterling R, Castañeda-Valbuena D, Berenguer-Murcia Á, Kamli MR, Tavano O, Fernandez-Lafuente R. Immobilization of papain: A review. Int J Biol Macromol 2021; 188:94-113. [PMID: 34375660 DOI: 10.1016/j.ijbiomac.2021.08.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/22/2021] [Accepted: 08/03/2021] [Indexed: 12/13/2022]
Abstract
Papain is a cysteine protease from papaya, with many applications due to its broad specificity. This paper reviews for first time the immobilization of papain on different supports (organic, inorganic or hybrid supports) presenting some of the features of the utilized immobilization strategies (e.g., epoxide, glutaraldehyde, genipin, glyoxyl for covalent immobilization). Special focus is placed on the preparation of magnetic biocatalysts, which will permit the simple recovery of the biocatalyst even if the medium is a suspension. Problems specific to the immobilization of proteases (e.g., steric problems when hydrolyzing large proteins) are also defined. The benefits of a proper immobilization (enzyme stabilization, widening of the operation window) are discussed, together with some artifacts that may suggest an enzyme stabilization that may be unrelated to enzyme rigidification.
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Affiliation(s)
- Veymar G Tacias-Pascacio
- Facultad de Ciencias de la Nutrición y Alimentos, Universidad de Ciencias y Artes de Chiapas, Lib. Norte Pte. 1150, 29039 Tuxtla Gutiérrez, Chiapas, Mexico; Tecnológico Nacional de México/Instituto Tecnológico de Tuxtla Gutiérrez, Carretera Panamericana Km. 1080, 29050 Tuxtla Gutiérrez, Chiapas, Mexico
| | - Roberto Morellon-Sterling
- Departamento de Biocatálisis. ICP-CSIC./Marie Curie 2, Campus UAM-CSIC Cantoblanco, 28049 Madrid. Spain; Student of Departamento de Biología Molecular, Universidad Autónoma de Madrid, Darwin 2, Campus UAM-CSIC, Cantoblanco, 28049 Madrid. Spain
| | - Daniel Castañeda-Valbuena
- Tecnológico Nacional de México/Instituto Tecnológico de Tuxtla Gutiérrez, Carretera Panamericana Km. 1080, 29050 Tuxtla Gutiérrez, Chiapas, Mexico
| | - Ángel Berenguer-Murcia
- Departamento de Química Inorgánica e Instituto Universitario de Materiales, Universidad de Alicante, Alicante, Spain
| | - Majid Rasool Kamli
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddad 21589, Saudi Arabia; Center of excellence in Bionanoscience Research, King Abdulaziz University, Jeddad 21589, Saudi Arabia
| | - Olga Tavano
- Faculty of Nutrition, Alfenas Federal Univ., 700 Gabriel Monteiro da Silva St, Alfenas, MG 37130-000, Brazil
| | - Roberto Fernandez-Lafuente
- Departamento de Biocatálisis. ICP-CSIC./Marie Curie 2, Campus UAM-CSIC Cantoblanco, 28049 Madrid. Spain; Center of Excellence in Bionanoscience Research, External advisory board, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
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Shivudu G, Chandraraj K, Selvam P. Production of xylooligosaccharides from xylan catalyzed by endo-1,4-β-D-xylanase-immobilized nanoscale carbon, silica and zirconia matrices. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2019.110745] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shivudu G, Khan S, Chandraraj K, Selvam P. Immobilization of Recombinant Endo‐1,4‐β‐xylanase on Ordered Mesoporous Matrices for Xylooligosaccharides Production. ChemistrySelect 2019. [DOI: 10.1002/slct.201901593] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Godhulayyagari Shivudu
- National Centre for Catalysis Research and Department of BiotechnologyIndian Institute of Technology-Madras Chennai- 600036 India
| | - Sourav Khan
- National Centre for Catalysis Research and Department of ChemistryIndian Institute of Technology-Madras Chennai- 600036 India
| | - Krishnan Chandraraj
- National Centre for Catalysis Research and Department of BiotechnologyIndian Institute of Technology-Madras Chennai- 600036 India
| | - Parasuraman Selvam
- National Centre for Catalysis Research and Department of ChemistryIndian Institute of Technology-Madras Chennai- 600036 India
- School of Chemical Engineering and Analytical ScienceThe University of Manchester, Manchester M13 9PL United Kingdom
- Department of Chemical and Process EngineeringUniversity of Surrey, Guildford, Surrey GU2 7XH United Kingdom
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6
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Li L, Li H, Yan B, Yu S. Preparation of a reversible soluble-insoluble β-d-Glucosidase with perfect stability and activity. J Biotechnol 2019; 291:46-51. [DOI: 10.1016/j.jbiotec.2018.12.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/20/2018] [Accepted: 12/27/2018] [Indexed: 10/27/2022]
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7
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Shakya AK, Nandakumar KS. An update on smart biocatalysts for industrial and biomedical applications. J R Soc Interface 2018; 15:20180062. [PMID: 29491182 PMCID: PMC5832743 DOI: 10.1098/rsif.2018.0062] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 02/08/2018] [Indexed: 12/22/2022] Open
Abstract
Recently, smart biocatalysts, where enzymes are conjugated to stimuli-responsive (smart) polymers, have gained significant attention. Based on the presence or absence of external stimuli, the polymer attached to the enzyme changes its conformation to protect the enzyme from the external environment and regulate the enzyme activity, thus acting as a molecular switch. Owing to this behaviour, smart biocatalysts can be separated easily from a reaction mixture and re-used several times. Several such smart polymer-based biocatalysts have been developed for industrial and biomedical applications. In addition, they have been used in biosensors, biometrics and nano-electronic devices. This review article covers recent advances in developing different kinds of stimuli-responsive enzyme bioconjugates, including conjugation strategies, and their applications.
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Affiliation(s)
| | - Kutty Selva Nandakumar
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Department of Medical Biophysics and Biochemistry, Karolinska Institute, Stockholm, Sweden
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8
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Optimization of fermentation media and growth conditions for microbial xylanase production. 3 Biotech 2016; 6:122. [PMID: 28330199 PMCID: PMC4909030 DOI: 10.1007/s13205-016-0445-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 05/25/2016] [Indexed: 11/23/2022] Open
Abstract
Efficiency of cellulase-free xylanases is one of the determining factors in paper and pulp industries. Use of microbes which can produce cellulase-free xylanases may help to overcome the current challenges in kraft pulp processing. Isolation and screening of microorganisms from local samples offers a possibility for obtaining the potential microbes for this purpose. This research was therefore aimed to collect, screen, characterize and identify potential cellulase-free xylanase producers. A total of 313 microbial isolates were collected while using selective media (EBAM and XAM) to determine the xylanolytic potential of microbes. Qualitative and quantitative analyses were performed and finally 11 bacterial and 6 fungal strains were selected for characterization and identification. The potential isolates were identified as Bacillus pumilus (388.82 U/mg), Bacillus safensis (385.26 U/mg), Aspergillus flavus (493.33 U/mg) and Aspergillus niger (419.33 U/mg). Optimization of the microbial strains while using agro-industrial waste is suggested.
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9
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Reusable magnetic nanobiocatalyst for synthesis of silver and gold nanoparticles. Int J Biol Macromol 2016; 93:66-74. [PMID: 27581559 DOI: 10.1016/j.ijbiomac.2016.08.073] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 08/16/2016] [Accepted: 08/26/2016] [Indexed: 11/23/2022]
Abstract
In the present work, we describe a simple procedure for the biosynthesis of nanosilver and gold by the reduction of silver nitrate and auric chloride respectively using a nanobiocatalyst. The nanobiocatalyst was prepared by covalent coupling of alpha amylase on (3-aminopropyl)triethoxysilane (APTES) modified iron oxide magnetic nanoparticles. The nanobiocatalyst retains 77% of its activity as compared to free alpha amylase. The nanobiocatalyst can be used up to three consecutive cycles for the synthesis of nano silver and gold. The biosynthesized nanoparticles after each cycle were characterized by UV-vis spectrophotometer, Dynamic Light Spectroscopy (DLS), Transmission Electron Microscope (TEM), X-ray powder diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). Silver and gold nanoparticles of same morphology and dimensions were formed in each cycle. The procedure for synthesis of nanoparticles using an immobilized enzyme is eco-friendly and can be used repeatedly.
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10
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Awad GEA, Abd El Aty AA, Shehata AN, Hassan ME, Elnashar MM. Covalent immobilization of microbial naringinase using novel thermally stable biopolymer for hydrolysis of naringin. 3 Biotech 2016; 6:14. [PMID: 28330084 PMCID: PMC4703588 DOI: 10.1007/s13205-015-0338-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Accepted: 07/07/2015] [Indexed: 12/02/2022] Open
Abstract
Naringinase induced from the fermented broth of marine-derived fungus Aspergillus niger was immobilized into grafted gel beads, to obtain biocatalytically active beads. The support for enzyme immobilization was characterized by ART-FTIR and TGA techniques. TGA revealed a significant improvement in the grafted gel's thermal stability from 200 to 300 °C. Optimization of the enzyme loading capacity increased gradually by 28-fold from 32 U/g gel to 899 U/g gel beads, retaining 99 % of the enzyme immobilization efficiency and 88 % of the immobilization yield. The immobilization process highly improved the enzyme's thermal stability from 50 to 70 °C, which is favored in food industries, and reusability test retained 100 % of the immobilized enzyme activity after 20 cycles. These results are very useful on the marketing and industrial levels.
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Affiliation(s)
- Ghada E A Awad
- Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki, Giza, Egypt
| | - Abeer A Abd El Aty
- Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki, Giza, Egypt.
| | - Abeer N Shehata
- Biochemistry Department, National Research Centre, Dokki, Giza, Egypt.
| | - Mohamed E Hassan
- Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki, Giza, Egypt
- Encapsulation and Nanobiotechnology Group, Center of Excellence, National Research Centre, Dokki, Giza, Egypt
| | - Magdy M Elnashar
- Biomedical Sciences Department, Curtin University, Perth, Australia
- Polymers Department, National Research Centre, Dokki, Giza, Egypt
- Encapsulation and Nanobiotechnology Group, Center of Excellence, National Research Centre, Dokki, Giza, Egypt
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11
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Improved Enzyme Catalytic Characteristics upon Glutaraldehyde Cross-Linking of Alginate Entrapped Xylanase Isolated from Aspergillus flavus MTCC 9390. Enzyme Res 2015; 2015:210784. [PMID: 26347814 PMCID: PMC4549544 DOI: 10.1155/2015/210784] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 08/06/2015] [Accepted: 08/06/2015] [Indexed: 11/25/2022] Open
Abstract
Purified fungal xylanase was entrapped in alginate beads. Its further cross-linking using glutaraldehyde resulted in large enzyme aggregates which may function as both a catalyst and a support material for numerous substrate molecules. Enzyme cross-linking presented a negative impact on enzyme leaching during repeated washings and recovery of enzyme activity was substantial after twelve cycles of usage. The entrapment followed by cross-linking doubled the total bound activity and also greatly improved the enzyme stability at extreme chemical environment. The wide pH stability, better thermo- and storage stability, lowered Km value, and protection from some metal ions are salient achievements of present immobilization. The study shows the efficacy, durability, and sustainability of immobilized catalytic system which could be efficiently used for various juice processing operations.
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12
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Volokitina MV, Bobrov KS, Piens K, Eneyskaya EV, Tennikova TB, Vlakh EG, Kulminskaya AA. Xylan degradation improved by a combination of monolithic columns bearing immobilized recombinant β-xylosidase from Aspergillus awamori X-100 and Grindamyl H121 β-xylanase. Biotechnol J 2014; 10:210-21. [PMID: 25367775 DOI: 10.1002/biot.201400417] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 10/17/2014] [Accepted: 11/03/2014] [Indexed: 11/12/2022]
Abstract
Synergistic action of exo- and endohydrolazes is preferred for effective destruction of biopolymers. The main purpose of the present work was to develop an efficient tool for degradation of xylan. Macroporous lab-made monolithic columns and commercial CIM-Epoxy disk were used to immobilize the recombinant β-xylosidase from Aspergillus awamori and Grindamyl β-xylanase. The efficiency of xylan degradation using the low-loaded β-xylosidase column appeared to be four times higher than for the in-solution process and about six times higher than for the high-loaded bioreactor. Disk bioreactor with the Grindamil β-xylanase operated in a recirculation mode has shown noticeable advantages over the column design. Additionally, a system comprised of two immobilized enzyme reactors (IMERs) was tested to accelerate the biopolymer hydrolysis, yielding total xylan conversion into xylose within 20 min. Fast online monitoring HPLC procedure was developed where an analytical DEAE CIM disk was added to the two-enzyme system in a conjoint mode. A loss of activity of immobilized enzymes did not exceed 7% after 5 months of the bioreactor usage. We can therefore conclude that the bioreactors developed exhibit high efficiency and remarkable long-term stability.
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Affiliation(s)
- Maria V Volokitina
- Russian Academy of Sciences, Institute of Macromolecular Compounds, St. Petersburg, Russia; Saint-Petersburg State University, Institute of Chemistry, St. Petersburg, Russia
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13
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Lee J, Park I, Cho J. Immobilization of the Antarctic Bacillus sp. LX-1 α-Galactosidase on Eudragit L-100 for the Production of a Functional Feed Additive. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2014; 26:552-7. [PMID: 25049822 PMCID: PMC4093379 DOI: 10.5713/ajas.2012.12557] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 12/11/2012] [Accepted: 12/02/2012] [Indexed: 11/27/2022]
Abstract
Partially purified α-galactosidase from Bacillus sp. LX-1 was non-covalently immobilized on a reversibly soluble-insoluble polymer, Eudragit L-100, and an immobilization efficiency of 0.93 was obtained. The optimum pH of the free and immobilized enzyme was 6.5 to 7.0 and 7.0, respectively, while there was no change in optimum temperature between the free and immobilized α-galactosidase. The immobilized α-galactosidase was reutilized six times without significant loss in activity. The immobilized enzyme showed good storage stability at 37°C, retaining about 50% of its initial activity even after 18 d at this temperature, while the free enzyme was completely inactivated. The immobilization of α-galactosidase from Bacillus sp. LX-1 on Eudragit L-100 may be a promising strategy for removal of α-galacto-oligosaccharides such as raffinose and stachyose from soybean meal and other legume in feed industry.
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Affiliation(s)
- Jaekoo Lee
- Department of Animal Sciences and Environment, College of Animal Bioscience and Technology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 143-701, Korea
| | - Inkyung Park
- Department of Animal Sciences and Environment, College of Animal Bioscience and Technology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 143-701, Korea
| | - Jaiesoon Cho
- Department of Animal Sciences and Environment, College of Animal Bioscience and Technology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 143-701, Korea
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Kumar L, Nagar S, Mittal A, Garg N, Gupta VK. Immobilization of xylanase purified from Bacillus pumilus VLK-1 and its application in enrichment of orange and grape juices. Journal of Food Science and Technology 2014; 51:1737-49. [PMID: 25190829 DOI: 10.1007/s13197-014-1268-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/05/2013] [Accepted: 01/20/2014] [Indexed: 11/27/2022]
Abstract
This study was conducted to evaluate the efficacy of purified free and immobilized xylanase in enrichment of fruit juices. Extracellular xylanase produced from Bacillus pumilus VLK-1 was purified to apparent homogeneity by 15.4-fold with 88.3 % recovery in a single step using CM-Sephadex C-50. Purified xylanase showed a single band on SDS-polyacrylamide gel with a molecular mass of 22.0 kDa. The purified enzyme was immobilized on glutaraldehyde-activated aluminum oxide pellets and the immobilization process parameters were optimized statistically through response surface methodology. The bound enzyme displayed an increase in optimum temperature from 60 to 65 ºC and pH from 8.0 to 9.0. The pH and temperature stability of the enzyme was also enhanced after immobilization. It could be reused for 10 consecutive cycles with 58 % residual enzyme activity. The potential of purified xylanase (free and immobilized) in juice enrichment from grape (Vitis amurensis) and orange (Citrus sinensis) pulps has been investigated. The optimization of this process using free xylanase revealed maximum juice yield, clarity and reducing sugar on treatment with 20 IU/g fruit pulp for 30 min at 50 ºC. Treatment of both the fruit pulps with xylanase under optimized conditions resulted in an increase in juice yield, clarity, reducing sugars, titratable acidity, and filterability but a decline in turbidity and viscosity. Immobilized enzyme was more effective in improving juice quality as compared to its soluble counterpart. The results showed B. pumilus VLK-1 xylanase, in both free and immobilized form, as a potential candidate for use in fruit juice enrichment.
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Affiliation(s)
- Lalit Kumar
- Department of Biochemistry, Kurukshetra University, Kurukshetra, 136119 Haryana India
| | - Sushil Nagar
- Department of Biochemistry, Kurukshetra University, Kurukshetra, 136119 Haryana India
| | - Anuradha Mittal
- Department of Biochemistry, Kurukshetra University, Kurukshetra, 136119 Haryana India
| | - Neelam Garg
- Department of Microbiology, Kurukshetra University, Kurukshetra, 136 119 India
| | - Vijay Kumar Gupta
- Department of Biochemistry, Kurukshetra University, Kurukshetra, 136119 Haryana India
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Biochemical characterization and kinetic comparison of encapsulated haze removing acidophilic xylanase with partially purified free xylanase isolated from Aspergillus flavus MTCC 9390. Journal of Food Science and Technology 2013. [DOI: 10.1007/s13197-013-1013-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Figueira JA, Sato HH, Fernandes P. Establishing the feasibility of using β-glucosidase entrapped in Lentikats and in sol-gel supports for cellobiose hydrolysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:626-34. [PMID: 23294439 DOI: 10.1021/jf304594s] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
β-Glucosidases represent an important group of enzymes due to their pivotal role in various biotechnological processes. One of the most prominent is biomass degradation for the production of fuel ethanol from cellulosic agricultural residues and wastes, where the use of immobilized biocatalysts may prove advantageous. Within such scope, the present work aimed to evaluate the feasibility of entrapping β-glucosidase in either sol-gel or in Lentikats supports for application in cellobiose hydrolysis, and to perform the characterization of the resulting bioconversion systems. The activity and stability of the immobilized biocatalyst over given ranges of temperature and pH values were assessed, as well as kinetic data, and compared to the free form, and the operational stability was evaluated. Immobilization increased the thermal stability of the enzyme, with a 10 °C shift to an optimal temperature in the case of sol-gel support. Mass transfer hindrances as a result of immobilization were not significant, for sol-gel support. Lentikats-entrapped glucosidase was used in 19 consecutive batch runs for cellobiose hydrolysis, without noticeable decrease in product yield. Moreover, encouraging results were obtained for continuous operation. In the overall, the feasibility of using immobilized biocatalysts for cellobiose hydrolysis was established.
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Affiliation(s)
- Joelise A Figueira
- Department of Food Science, School of Food Engineering, University of Campinas-UNICAMP, Campinas, SP, Brazil
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17
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Biodiesel production by transesterification using immobilized lipase. Biotechnol Lett 2012; 35:479-90. [DOI: 10.1007/s10529-012-1116-z] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Accepted: 11/28/2012] [Indexed: 10/27/2022]
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Liang W, Cao X. Preparation of a pH-sensitive polyacrylate amphiphilic copolymer and its application in cellulase immobilization. BIORESOURCE TECHNOLOGY 2012; 116:140-146. [PMID: 22609668 DOI: 10.1016/j.biortech.2012.03.082] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2011] [Revised: 02/24/2012] [Accepted: 03/23/2012] [Indexed: 06/01/2023]
Abstract
P(MDB), a pH-sensitive and reversible water-soluble copolymer, was synthesized with methacrylic acid (MAA), 2-(dimethylamino) ethyl methacrylate (DMAEMA), and butyl methacrylate (BMA) and used as carrier for cellulase. The copolymer is insoluble between pH 2.5 and 4.1, and soluble below pH 2.5 or above 4.1. Its recovery in aqueous solution was 97.2% by adjusting its isoelectric point (pI) to 3.1. Cellulase was covalently immobilized on P(MDB) with 1-ethyl-3-(3-dimethyllaminopropyl) carbodiimide. Under optimized conditions, the activity yield of immobilized cellulase was 63.24% and its recovery was 96.8% by adjusting the pI to 3.5. Maximum activity of the immobilized cellulase was achieved at 60 °C (pH 5.0), while free cellulase exhibited maximum activity at 55 °C (pH 5.0). The immobilized cellulase retained 83.1% of its initial activity after repeated five cycles of hydrolysis reaction. P(MDB) is a promising carrier for immobilizing enzymes with high and low optimum pH due to its dissolving characteristics.
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Affiliation(s)
- Wenjuan Liang
- State Key Laboratory of Bioreactor Engineering, Department of Bioengineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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Cristóvão RO, Silvério SC, Tavares APM, Brígida AIS, Loureiro JM, Boaventura RAR, Macedo EA, Coelho MAZ. Green coconut fiber: a novel carrier for the immobilization of commercial laccase by covalent attachment for textile dyes decolourization. World J Microbiol Biotechnol 2012; 28:2827-38. [PMID: 22806722 DOI: 10.1007/s11274-012-1092-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 05/24/2012] [Indexed: 11/24/2022]
Abstract
Commercial laccase formulation was immobilized on modified green coconut fiber silanized with 3-glycidoxypropyltrimethoxysilane, aiming to achieve a cheap and effective biocatalyst. Two different strategies were followed: one point (pH 7.0) and multipoint (pH 10.0) covalent attachment. The influence of immobilization time on enzymatic activity and the final reduction with sodium borohydride were evaluated. The highest activities were achieved after 2 h of contact time in all situations. Commercial laccase immobilized at pH 7.0 was found to have higher activity and higher affinity to the substrate. However, the immobilization by multipoint covalent attachment improved the biocatalyst thermal stability at 50 °C, when compared to soluble enzyme and to the immobilized enzyme at pH 7.0. The Schiff's bases reduction by sodium borohydride, in spite of causing a decrease in enzyme activity, showed to contribute to the increase of operational stability through bonds stabilization. Finally, these immobilized enzymes showed high efficiency in the continuous decolourization of reactive textile dyes. In the first cycle, the decolourization is mainly due to dyes adsorption on the support. However, when working in successive cycles, the adsorption capacity of the support decreases (saturation) and the enzymatic action increases, indicating the applicability of this biocatalyst for textile wastewater treatment.
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Affiliation(s)
- Raquel O Cristóvão
- Laboratory of Separation and Reaction Engineering (LSRE), Associate Laboratory LSRE/LCM, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua do Dr. Roberto Frias, 4200-465, Porto, Portugal
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Park I, Lee J, Cho J. Partial Characterization of α-Galactosidic Activity from the Antarctic Bacterial Isolate, Paenibacillus sp. LX-20 as a Potential Feed Enzyme Source. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2012; 25:852-60. [PMID: 25049637 PMCID: PMC4093098 DOI: 10.5713/ajas.2011.11501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 03/05/2012] [Accepted: 02/17/2012] [Indexed: 11/27/2022]
Abstract
An Antarctic bacterial isolate displaying extracellular α-galactosidic activity was named Paenibacillus sp. LX-20 based on 16S rRNA gene sequence analysis. Optimal activity for the LX-20 α-galactosidase occurred at pH 6.0–6.5 and 45°C. The enzyme immobilized on the smart polymer Eudragit L-100 retained 70% of its original activity after incubation for 30 min at 50°C, while the free enzyme retained 58% of activity. The enzyme had relatively high specificity for α-D-galactosides such as p-nitrophenyl-α-galactopyranoside, melibiose, raffinose and stachyose, and was resistant to some proteases such as trypsin, pancreatin and pronase. Enzyme activity was almost completely inhibited by Ag+, Hg2+, Cu2+, and sodium dodecyl sulfate, but activity was not affected by β-mercaptoethanol or EDTA. LX-20 α-galactosidase may be potentially useful as an additive for soybean processing in the feed industry.
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Padilla-Hurtado B, Flórez-Ramos C, Aguilera-Gálvez C, Medina-Olaya J, Ramírez-Sanjuan A, Rubio-Gómez J, Acuña-Zornosa R. Cloning and expression of an endo-1,4-β-xylanase from the coffee berry borer, Hypothenemus hampei. BMC Res Notes 2012; 5:23. [PMID: 22233686 PMCID: PMC3283504 DOI: 10.1186/1756-0500-5-23] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Accepted: 01/10/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The coffee berry borer, Hypothenemus hampei, reproduces and feeds exclusively on the mature endosperm of the coffee seed, which has a cell wall composed mainly of a heterogeneous mixture of hemicellulose polysaccharides, including arabinoxylans. Xylanases are digestive enzymes responsible for the degradation of xylan based polymers, hydrolyzing them into smaller molecules that are easier to assimilate by insects. We report the cloning, expression and enzymatic characterization of a xylanase gene that was identified in the digestive tract of the coffee berry borer. METHODS The complete DNA sequence encoding a H. hampei xylanase (HhXyl) was obtained using a genome walking technique in a cDNA library derived from the borer digestive tract. The XIP-I gene was amplified from wheat (Triticum aestivum variety Soisson). A Pichia pastoris expression system was used to express the recombinant form of these enzymes. The xylanase activity and XIP-I inhibitory activity was quantified by the 3,5-dinitrosalicylic (DNS). The biological effects of XIP-I on borer individuals were evaluated by providing an artificial diet enriched with the recombinant XIP-I protein to the insects. RESULTS The borer xylanase sequence contains a 951 bp open reading frame that is predicted to encode a 317-amino acid protein, with an estimated molecular weight of 34.92 kDa and a pI of 4.84. Bioinformatic analysis revealed that HhXyl exhibits high sequence homology with endo-β-D-xylanases of Streptomyces bingchenggensis from glycosyl hydrolase 10 (GH10). The recombinant xylanase showed maximal activity at pH 5.5 and 37°C. XIP-I expressed as a recombinant protein inhibited HhXyl activity in vitro and caused individual H. hampei mortality in bioassays when included as a supplement in artificial diets. CONCLUSION A xylanase from the digestive tract of the coffee berry borer was identified and functionally characterized. A xylanase inhibitor protein, XIP-I, from wheat was shown to be a potent inhibitor of this xylanase, suggesting that its deployment has potential as a strategy to control coffee berry borer colonization of coffee plants.
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Affiliation(s)
- Beatriz Padilla-Hurtado
- Disciplina de Mejoramiento Genético, Centro Nacional de Investigaciones de Café (CENICAFE), Planalto, Km 4 vía antigua Chinchiná-Manizales, Chinchiná, Colombia.
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Gupta P, Upadhyay L, Shrivastav R. Lipase Catalyzed-transesterification of Vegetable Oils by Lipolytic Bacteria. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/jm.2011.281.288] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Zhang Y, Xu JL, Li D, Yuan ZH. Preparation and properties of an immobilized cellulase on the reversibly soluble matrix Eudragit L-100. BIOCATAL BIOTRANSFOR 2010. [DOI: 10.3109/10242422.2010.516391] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Danial EN, Elnashar MMM, Awad GEA. Immobilized Inulinase on Grafted Alginate Beads Prepared by the One-Step and the Two-Steps Methods. Ind Eng Chem Res 2010. [DOI: 10.1021/ie100011z] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Enas N. Danial
- Chemistry of Natural and Microbial Products Department and Centre of Scientific Excellence—Polymers Department—Advanced Materials & Nanotechnology Laboratory, National Research Center, El-Behooth St., Dokki, Cairo, Egypt
| | - Magdy M. M. Elnashar
- Chemistry of Natural and Microbial Products Department and Centre of Scientific Excellence—Polymers Department—Advanced Materials & Nanotechnology Laboratory, National Research Center, El-Behooth St., Dokki, Cairo, Egypt
| | - Ghada E. A. Awad
- Chemistry of Natural and Microbial Products Department and Centre of Scientific Excellence—Polymers Department—Advanced Materials & Nanotechnology Laboratory, National Research Center, El-Behooth St., Dokki, Cairo, Egypt
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Smith E, Zhang Q, Shen J, Schroeder M, Silva C. Modification of Esperase® by covalent bonding to Eudragit® polymers L 100 and S 100 for wool fibre surface treatment. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420802249521] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Maalej-Achouri I, Guerfali M, Gargouri A, Belghith H. Production of xylo-oligosaccharides from agro-industrial residues using immobilized Talaromyces thermophilus xylanase. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2009.02.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hung YJ, Peng CC, Tzen JTC, Chen MJ, Liu JR. Immobilization of Neocallimastix patriciarum xylanase on artificial oil bodies and statistical optimization of enzyme activity. BIORESOURCE TECHNOLOGY 2008; 99:8662-8666. [PMID: 18495476 DOI: 10.1016/j.biortech.2008.04.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2008] [Revised: 04/03/2008] [Accepted: 04/06/2008] [Indexed: 05/26/2023]
Abstract
A thermally stable and alkalophilic xylanase, XynCDBFV, from Neocallimastix patriciarum was overexpressed in Escherichia coli as a recombinant protein fused to the N-terminus of oleosin, a unique structural protein of seed oil bodies. As a result of the reconstitution of the artificial oil bodies (AOBs), the immobilization of active xylanase was accomplished. Response surface methodology (RSM) was employed for the optimization of the immobilized xylanase activity. The central composite design (CCD) and regression analysis methods were effective for determination of optimized temperature and pH conditions for the AOB-immobilized XynCDBFV. The optimal condition for the highest immobilized xylanase activity (3.93IU/mg of total protein) was observed at 59 degrees C and pH 6.0. Further, AOB-immobilized XynCDBFV retained 50% of its maximal activity after 120min at 60 degrees C, and it could be easily and simply recovered from the surface of the solution by brief centrifugation, and could be reused eight times while retaining more than 60% of its activity. These results proved it is a simple and effective method for direct immobilization of xylanases.
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Affiliation(s)
- Ying-Jing Hung
- Department of Animal Science and Technology, National Taiwan University, Taipei 106, Taiwan
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Immobilization of Xylan-Degrading Enzymes from Scytalidium thermophilum on Eudragit L-100. World J Microbiol Biotechnol 2005. [DOI: 10.1007/s11274-005-0080-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Immobilization of Streptomyces olivaceoviridis E-86 xylanase on Eudragit S-100 for xylo-oligosaccharide production. Process Biochem 2005. [DOI: 10.1016/j.procbio.2004.12.006] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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