Acylation of glucose catalysed by lipases in supercritical carbon dioxide
The acylation of glucose with lauric acid in a reaction catalysed by two Candida lipases and a Mucor miehei lipase in supercritical carbon dioxide (SCCO2) was investigated. A linear dependence of the reaction rate on enzyme concentration was observed. Studies on the effect of temperature on enzyme a...
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JOHN WILEY & SONS LTD
1998
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ftntunivathens:oai:dspace.lib.ntua.gr:123456789/12560 2023-05-15T13:33:33+02:00 Acylation of glucose catalysed by lipases in supercritical carbon dioxide Tsitsimpikou, C Stamatis, H Sereti, V Daflos, H Kolisis, FN 1998 http://dspace.lib.ntua.gr/handle/123456789/12560 https://doi.org/10.1002/(SICI)1097-4660(199804)71:4<309::AID-JCTB859>3.0.CO;2-L English eng JOHN WILEY & SONS LTD info:eu-repo/semantics/openAccess free Journal of Chemical Technology and Biotechnology Glucose acylation Lipase Supercritical carbon dioxide Biotechnology & Applied Microbiology Chemistry Multidisciplinary Engineering Chemical carbon dioxide glucose lauric acid triacylglycerol lipase water acylation article candida catalyst chemical reaction kinetics enzyme activity mucor Candida antarctica Candida rugosa Mucor miehei Catalysis Catalyst activity Composition effects Enzymes Organic acids Organic solvents Reaction kinetics Thermal effects Thermodynamic stability info:eu-repo/semantics/article 1998 ftntunivathens https://doi.org/10.1002/(SICI)1097-4660(199804)71:4<309::AID-JCTB859>3.0.CO;2-L 2019-07-13T15:53:21Z The acylation of glucose with lauric acid in a reaction catalysed by two Candida lipases and a Mucor miehei lipase in supercritical carbon dioxide (SCCO2) was investigated. A linear dependence of the reaction rate on enzyme concentration was observed. Studies on the effect of temperature on enzyme activity showed that Candida antarctica lipase remains stable at temperatures as high as 70 degrees C. Non-immobilised Candida rugosa lipase was found to have a temperature optimum at 60 degrees C. The acylation reaction rate depended on the initial water activity of both substrates and enzyme; the optimum was 0.75 for Candida antarctica lipase, 0.53 for Candida rugosa lipase, and between 0.3 and 0.5 for Mucor miehei lipase. Candida rugosa lipase was most active at a molar ratio of sugar:acyl donor of 1 : 3, while the optimum ratio was found to increase to 1 : 6 when the reaction was catalysed by Candida antarctica and Mucor miehei lipases. (C) 1998 SCI. Article in Journal/Newspaper Antarc* Antarctica National Technical University of Athens (NTUA): DSpace Rugosa ENVELOPE(-61.250,-61.250,-62.633,-62.633) |
institution |
Open Polar |
collection |
National Technical University of Athens (NTUA): DSpace |
op_collection_id |
ftntunivathens |
language |
English |
topic |
Glucose acylation Lipase Supercritical carbon dioxide Biotechnology & Applied Microbiology Chemistry Multidisciplinary Engineering Chemical carbon dioxide glucose lauric acid triacylglycerol lipase water acylation article candida catalyst chemical reaction kinetics enzyme activity mucor Candida antarctica Candida rugosa Mucor miehei Catalysis Catalyst activity Composition effects Enzymes Organic acids Organic solvents Reaction kinetics Thermal effects Thermodynamic stability |
spellingShingle |
Glucose acylation Lipase Supercritical carbon dioxide Biotechnology & Applied Microbiology Chemistry Multidisciplinary Engineering Chemical carbon dioxide glucose lauric acid triacylglycerol lipase water acylation article candida catalyst chemical reaction kinetics enzyme activity mucor Candida antarctica Candida rugosa Mucor miehei Catalysis Catalyst activity Composition effects Enzymes Organic acids Organic solvents Reaction kinetics Thermal effects Thermodynamic stability Tsitsimpikou, C Stamatis, H Sereti, V Daflos, H Kolisis, FN Acylation of glucose catalysed by lipases in supercritical carbon dioxide |
topic_facet |
Glucose acylation Lipase Supercritical carbon dioxide Biotechnology & Applied Microbiology Chemistry Multidisciplinary Engineering Chemical carbon dioxide glucose lauric acid triacylglycerol lipase water acylation article candida catalyst chemical reaction kinetics enzyme activity mucor Candida antarctica Candida rugosa Mucor miehei Catalysis Catalyst activity Composition effects Enzymes Organic acids Organic solvents Reaction kinetics Thermal effects Thermodynamic stability |
description |
The acylation of glucose with lauric acid in a reaction catalysed by two Candida lipases and a Mucor miehei lipase in supercritical carbon dioxide (SCCO2) was investigated. A linear dependence of the reaction rate on enzyme concentration was observed. Studies on the effect of temperature on enzyme activity showed that Candida antarctica lipase remains stable at temperatures as high as 70 degrees C. Non-immobilised Candida rugosa lipase was found to have a temperature optimum at 60 degrees C. The acylation reaction rate depended on the initial water activity of both substrates and enzyme; the optimum was 0.75 for Candida antarctica lipase, 0.53 for Candida rugosa lipase, and between 0.3 and 0.5 for Mucor miehei lipase. Candida rugosa lipase was most active at a molar ratio of sugar:acyl donor of 1 : 3, while the optimum ratio was found to increase to 1 : 6 when the reaction was catalysed by Candida antarctica and Mucor miehei lipases. (C) 1998 SCI. |
format |
Article in Journal/Newspaper |
author |
Tsitsimpikou, C Stamatis, H Sereti, V Daflos, H Kolisis, FN |
author_facet |
Tsitsimpikou, C Stamatis, H Sereti, V Daflos, H Kolisis, FN |
author_sort |
Tsitsimpikou, C |
title |
Acylation of glucose catalysed by lipases in supercritical carbon dioxide |
title_short |
Acylation of glucose catalysed by lipases in supercritical carbon dioxide |
title_full |
Acylation of glucose catalysed by lipases in supercritical carbon dioxide |
title_fullStr |
Acylation of glucose catalysed by lipases in supercritical carbon dioxide |
title_full_unstemmed |
Acylation of glucose catalysed by lipases in supercritical carbon dioxide |
title_sort |
acylation of glucose catalysed by lipases in supercritical carbon dioxide |
publisher |
JOHN WILEY & SONS LTD |
publishDate |
1998 |
url |
http://dspace.lib.ntua.gr/handle/123456789/12560 https://doi.org/10.1002/(SICI)1097-4660(199804)71:4<309::AID-JCTB859>3.0.CO;2-L |
long_lat |
ENVELOPE(-61.250,-61.250,-62.633,-62.633) |
geographic |
Rugosa |
geographic_facet |
Rugosa |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Journal of Chemical Technology and Biotechnology |
op_rights |
info:eu-repo/semantics/openAccess free |
op_doi |
https://doi.org/10.1002/(SICI)1097-4660(199804)71:4<309::AID-JCTB859>3.0.CO;2-L |
_version_ |
1766043328676102144 |