Alternativa potencial para aproveitamento do glicerol gerado na produção de biodiesel: síntese enzimática de monolaurina por esterificação
Esterification reactions of glycerol with lauric acid in solvent free system were carried out using lipases from several sources. All lipases were immobilized on polysiloxane-polyvinyl alcohol particles by covalent binding with high activity recovered. Among the tested enzymes, the Candida antarctic...
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2009
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ftjscielo:oai:scielo:S0100-40422009000900007 2023-05-15T13:46:23+02:00 Alternativa potencial para aproveitamento do glicerol gerado na produção de biodiesel: síntese enzimática de monolaurina por esterificação Freitas,Larissa Santos,Julio C. Barcza,Marcos V. Castro,Heizir F. de 2009-01-01 text/html http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000900007 pt por Sociedade Brasileira de Química Química Nova v.32 n.9 2009 glycerol lipase factorial design journal article 2009 ftjscielo 2015-10-26T18:14:01Z Esterification reactions of glycerol with lauric acid in solvent free system were carried out using lipases from several sources. All lipases were immobilized on polysiloxane-polyvinyl alcohol particles by covalent binding with high activity recovered. Among the tested enzymes, the Candida antarctica lipase allowed to attain the highest molar conversion (76%), giving similar proportions of monolaurin, dilaurin and low amount of trilaurin. To further improve the process, the Response Surface Methodology (RSM) was used and optima temperature and molar ratio glycerol to lauric acid were found to be 45 ºC and 5:1, respectively. Under these conditions, 31.35% of monolaurin concentrations were attained and this result was in close agreement with the statistical model prediction. Article in Journal/Newspaper Antarc* Antarctica SciELO Brazil (Scientific Electronic Library Online) |
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Open Polar |
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SciELO Brazil (Scientific Electronic Library Online) |
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language |
Portuguese |
topic |
glycerol lipase factorial design |
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glycerol lipase factorial design Freitas,Larissa Santos,Julio C. Barcza,Marcos V. Castro,Heizir F. de Alternativa potencial para aproveitamento do glicerol gerado na produção de biodiesel: síntese enzimática de monolaurina por esterificação |
topic_facet |
glycerol lipase factorial design |
description |
Esterification reactions of glycerol with lauric acid in solvent free system were carried out using lipases from several sources. All lipases were immobilized on polysiloxane-polyvinyl alcohol particles by covalent binding with high activity recovered. Among the tested enzymes, the Candida antarctica lipase allowed to attain the highest molar conversion (76%), giving similar proportions of monolaurin, dilaurin and low amount of trilaurin. To further improve the process, the Response Surface Methodology (RSM) was used and optima temperature and molar ratio glycerol to lauric acid were found to be 45 ºC and 5:1, respectively. Under these conditions, 31.35% of monolaurin concentrations were attained and this result was in close agreement with the statistical model prediction. |
format |
Article in Journal/Newspaper |
author |
Freitas,Larissa Santos,Julio C. Barcza,Marcos V. Castro,Heizir F. de |
author_facet |
Freitas,Larissa Santos,Julio C. Barcza,Marcos V. Castro,Heizir F. de |
author_sort |
Freitas,Larissa |
title |
Alternativa potencial para aproveitamento do glicerol gerado na produção de biodiesel: síntese enzimática de monolaurina por esterificação |
title_short |
Alternativa potencial para aproveitamento do glicerol gerado na produção de biodiesel: síntese enzimática de monolaurina por esterificação |
title_full |
Alternativa potencial para aproveitamento do glicerol gerado na produção de biodiesel: síntese enzimática de monolaurina por esterificação |
title_fullStr |
Alternativa potencial para aproveitamento do glicerol gerado na produção de biodiesel: síntese enzimática de monolaurina por esterificação |
title_full_unstemmed |
Alternativa potencial para aproveitamento do glicerol gerado na produção de biodiesel: síntese enzimática de monolaurina por esterificação |
title_sort |
alternativa potencial para aproveitamento do glicerol gerado na produção de biodiesel: síntese enzimática de monolaurina por esterificação |
publisher |
Sociedade Brasileira de Química |
publishDate |
2009 |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000900007 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Química Nova v.32 n.9 2009 |
_version_ |
1766241421912702976 |