Modulation of the activity and selectivity of the immobilized lipases by surfactants and solvents
Most of lipases are in equilibrium between a majority inactive closed form and a minority active open form in aqueous media. Perhaps, a certain stabilization of these open forms of lipases could be achieved in the presence of cosolvents or surfactants in the reaction medium. Three commercial lipases...
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ftcsic:oai:digital.csic.es:10261/113699 2024-02-11T09:57:22+01:00 Modulation of the activity and selectivity of the immobilized lipases by surfactants and solvents Quilles Junior, José Carlos Aragon, Caio C. Fernández-Lorente, Gloria Guisán, José Manuel Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil) Fundação de Amparo à Pesquisa do Estado de São Paulo 2015 http://hdl.handle.net/10261/113699 https://doi.org/10.1016/j.bej.2014.10.009 https://doi.org/10.13039/501100002322 https://doi.org/10.13039/501100001807 unknown Elsevier Sí doi:10.1016/j.bej.2014.10.009 issn: 1369-703X Biochemical Engineering Journal 93: 274-280 (2015) http://hdl.handle.net/10261/113699 http://dx.doi.org/10.13039/501100002322 http://dx.doi.org/10.13039/501100001807 none Stability Immobilization Selectivity Surfactants Hydrolysis of fish oil Lipases artículo http://purl.org/coar/resource_type/c_6501 2015 ftcsic https://doi.org/10.1016/j.bej.2014.10.00910.13039/50110000232210.13039/501100001807 2024-01-16T10:06:40Z Most of lipases are in equilibrium between a majority inactive closed form and a minority active open form in aqueous media. Perhaps, a certain stabilization of these open forms of lipases could be achieved in the presence of cosolvents or surfactants in the reaction medium. Three commercial lipases were studied (from Thermomyces lanuginosa (TLL), Candida Antarctica fraction B (CALB) and Lecitase (LEC)). Different derivatives were tested: TLL and LEC were adsorbed on an anionic exchanger and their activity strongly depends on the equilibrium between their open and closed form and CALB was adsorbed on a hydrophobic support when the open form was already stabilized by the support. Derivatives ionically adsorbed were hyperactivated by surfactans as well as by cosolvents: the activity of LEC increased 12 times in the presence of 15-20% of ethanol. CALB adsorbed on hydrophobic supports was hardly hyperactivated and even it was inhibited. The modification of the rate of covalent modification of the catalytic Ser seems to confirm that the observed hyperactivations were due to a stabilization of the open form of the adsorbed lipases (TLL and LEC). The hydrolysis of sardine oil was also studied in the presence or absence of surfactants and cosolvents. An interesting improvement in the ability of derivatives to discriminate the release of eicosipentaenic acid (EPA) and docosahexaenicacid (DHA) was found. The authors thank the financial support of Coordination for the Improvement of Higher Level -or Education Personnel (CAPES) and São Paulo Research Foundation (FAPESP), grant 2013/00530-0. Peer Reviewed Article in Journal/Newspaper Antarc* Antarctica Digital.CSIC (Spanish National Research Council) Biochemical Engineering Journal 93 274 280 |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Stability Immobilization Selectivity Surfactants Hydrolysis of fish oil Lipases |
spellingShingle |
Stability Immobilization Selectivity Surfactants Hydrolysis of fish oil Lipases Quilles Junior, José Carlos Aragon, Caio C. Fernández-Lorente, Gloria Guisán, José Manuel Modulation of the activity and selectivity of the immobilized lipases by surfactants and solvents |
topic_facet |
Stability Immobilization Selectivity Surfactants Hydrolysis of fish oil Lipases |
description |
Most of lipases are in equilibrium between a majority inactive closed form and a minority active open form in aqueous media. Perhaps, a certain stabilization of these open forms of lipases could be achieved in the presence of cosolvents or surfactants in the reaction medium. Three commercial lipases were studied (from Thermomyces lanuginosa (TLL), Candida Antarctica fraction B (CALB) and Lecitase (LEC)). Different derivatives were tested: TLL and LEC were adsorbed on an anionic exchanger and their activity strongly depends on the equilibrium between their open and closed form and CALB was adsorbed on a hydrophobic support when the open form was already stabilized by the support. Derivatives ionically adsorbed were hyperactivated by surfactans as well as by cosolvents: the activity of LEC increased 12 times in the presence of 15-20% of ethanol. CALB adsorbed on hydrophobic supports was hardly hyperactivated and even it was inhibited. The modification of the rate of covalent modification of the catalytic Ser seems to confirm that the observed hyperactivations were due to a stabilization of the open form of the adsorbed lipases (TLL and LEC). The hydrolysis of sardine oil was also studied in the presence or absence of surfactants and cosolvents. An interesting improvement in the ability of derivatives to discriminate the release of eicosipentaenic acid (EPA) and docosahexaenicacid (DHA) was found. The authors thank the financial support of Coordination for the Improvement of Higher Level -or Education Personnel (CAPES) and São Paulo Research Foundation (FAPESP), grant 2013/00530-0. Peer Reviewed |
author2 |
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil) Fundação de Amparo à Pesquisa do Estado de São Paulo |
format |
Article in Journal/Newspaper |
author |
Quilles Junior, José Carlos Aragon, Caio C. Fernández-Lorente, Gloria Guisán, José Manuel |
author_facet |
Quilles Junior, José Carlos Aragon, Caio C. Fernández-Lorente, Gloria Guisán, José Manuel |
author_sort |
Quilles Junior, José Carlos |
title |
Modulation of the activity and selectivity of the immobilized lipases by surfactants and solvents |
title_short |
Modulation of the activity and selectivity of the immobilized lipases by surfactants and solvents |
title_full |
Modulation of the activity and selectivity of the immobilized lipases by surfactants and solvents |
title_fullStr |
Modulation of the activity and selectivity of the immobilized lipases by surfactants and solvents |
title_full_unstemmed |
Modulation of the activity and selectivity of the immobilized lipases by surfactants and solvents |
title_sort |
modulation of the activity and selectivity of the immobilized lipases by surfactants and solvents |
publisher |
Elsevier |
publishDate |
2015 |
url |
http://hdl.handle.net/10261/113699 https://doi.org/10.1016/j.bej.2014.10.009 https://doi.org/10.13039/501100002322 https://doi.org/10.13039/501100001807 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Sí doi:10.1016/j.bej.2014.10.009 issn: 1369-703X Biochemical Engineering Journal 93: 274-280 (2015) http://hdl.handle.net/10261/113699 http://dx.doi.org/10.13039/501100002322 http://dx.doi.org/10.13039/501100001807 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/j.bej.2014.10.00910.13039/50110000232210.13039/501100001807 |
container_title |
Biochemical Engineering Journal |
container_volume |
93 |
container_start_page |
274 |
op_container_end_page |
280 |
_version_ |
1790609673159704576 |