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Synthesis of Benzyl Acetate Catalyzed by Lipase Immobilized in Nontoxic Chitosan-Polyphosphate Beads

Enzymes serve as biocatalysts for innumerable important reactions, however, their application has limitations, which can in many cases be overcome by using appropriate immobilization strategies. Here, a new support for immobilizing enzymes is proposed. This hybrid organic-inorganic support is compos...

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Autores principales: Melo, Ana D. Q., Silva, Francisco F. M., dos Santos, José C. S., Fernández-Lafuente, Roberto, Lemos, Telma L. G., Dias Filho, Francisco A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6149806/
https://www.ncbi.nlm.nih.gov/pubmed/29215558
http://dx.doi.org/10.3390/molecules22122165
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author Melo, Ana D. Q.
Silva, Francisco F. M.
dos Santos, José C. S.
Fernández-Lafuente, Roberto
Lemos, Telma L. G.
Dias Filho, Francisco A.
author_facet Melo, Ana D. Q.
Silva, Francisco F. M.
dos Santos, José C. S.
Fernández-Lafuente, Roberto
Lemos, Telma L. G.
Dias Filho, Francisco A.
author_sort Melo, Ana D. Q.
collection PubMed
description Enzymes serve as biocatalysts for innumerable important reactions, however, their application has limitations, which can in many cases be overcome by using appropriate immobilization strategies. Here, a new support for immobilizing enzymes is proposed. This hybrid organic-inorganic support is composed of chitosan—a natural, nontoxic, biodegradable, and edible biopolymer—and sodium polyphosphate as the inorganic component. Lipase B from Candida antarctica (CALB) was immobilized on microspheres by encapsulation using these polymers. The characterization of the composites (by infrared spectroscopy, thermogravimetric analysis, and confocal Raman microscopy) confirmed the hybrid nature of the support, whose external part consisted of polyphosphate and core was composed of chitosan. The immobilized enzyme had the following advantages: possibility of enzyme reuse, easy biocatalyst recovery, increased resistance to variations in temperature (activity declined from 60 °C and the enzyme was inactivated at 80 °C), and increased catalytic activity in the transesterification reactions. The encapsulated enzymes were utilized as biocatalysts for transesterification reactions to produce the compound responsible for the aroma of jasmine.
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spelling pubmed-61498062018-11-13 Synthesis of Benzyl Acetate Catalyzed by Lipase Immobilized in Nontoxic Chitosan-Polyphosphate Beads Melo, Ana D. Q. Silva, Francisco F. M. dos Santos, José C. S. Fernández-Lafuente, Roberto Lemos, Telma L. G. Dias Filho, Francisco A. Molecules Article Enzymes serve as biocatalysts for innumerable important reactions, however, their application has limitations, which can in many cases be overcome by using appropriate immobilization strategies. Here, a new support for immobilizing enzymes is proposed. This hybrid organic-inorganic support is composed of chitosan—a natural, nontoxic, biodegradable, and edible biopolymer—and sodium polyphosphate as the inorganic component. Lipase B from Candida antarctica (CALB) was immobilized on microspheres by encapsulation using these polymers. The characterization of the composites (by infrared spectroscopy, thermogravimetric analysis, and confocal Raman microscopy) confirmed the hybrid nature of the support, whose external part consisted of polyphosphate and core was composed of chitosan. The immobilized enzyme had the following advantages: possibility of enzyme reuse, easy biocatalyst recovery, increased resistance to variations in temperature (activity declined from 60 °C and the enzyme was inactivated at 80 °C), and increased catalytic activity in the transesterification reactions. The encapsulated enzymes were utilized as biocatalysts for transesterification reactions to produce the compound responsible for the aroma of jasmine. MDPI 2017-12-07 /pmc/articles/PMC6149806/ /pubmed/29215558 http://dx.doi.org/10.3390/molecules22122165 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Melo, Ana D. Q.
Silva, Francisco F. M.
dos Santos, José C. S.
Fernández-Lafuente, Roberto
Lemos, Telma L. G.
Dias Filho, Francisco A.
Synthesis of Benzyl Acetate Catalyzed by Lipase Immobilized in Nontoxic Chitosan-Polyphosphate Beads
title Synthesis of Benzyl Acetate Catalyzed by Lipase Immobilized in Nontoxic Chitosan-Polyphosphate Beads
title_full Synthesis of Benzyl Acetate Catalyzed by Lipase Immobilized in Nontoxic Chitosan-Polyphosphate Beads
title_fullStr Synthesis of Benzyl Acetate Catalyzed by Lipase Immobilized in Nontoxic Chitosan-Polyphosphate Beads
title_full_unstemmed Synthesis of Benzyl Acetate Catalyzed by Lipase Immobilized in Nontoxic Chitosan-Polyphosphate Beads
title_short Synthesis of Benzyl Acetate Catalyzed by Lipase Immobilized in Nontoxic Chitosan-Polyphosphate Beads
title_sort synthesis of benzyl acetate catalyzed by lipase immobilized in nontoxic chitosan-polyphosphate beads
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6149806/
https://www.ncbi.nlm.nih.gov/pubmed/29215558
http://dx.doi.org/10.3390/molecules22122165
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