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Kinetics of solvent-free lipase-catalyzed production of monoacylglycerols from olive oil in aerosol-ot surfactant / Karina G. Fiametti in Industrial & engineering chemistry research, Vol. 48 N°2 (Janvier 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°2 (Janvier 2009) . - p 708–712 Titre : Kinetics of solvent-free lipase-catalyzed production of monoacylglycerols from olive oil in aerosol-ot surfactant Type de document : texte imprimé Auteurs : Karina G. Fiametti, Auteur ; Suzimara Rovani, Auteur ; Débora de Oliveira, Auteur ; Marcos L. Corazza, Auteur Année de publication : 2009 Article en page(s) : p 708–712 Note générale : chemical engenireeng Langues : Anglais (eng) Mots-clés : Monoacylglycerols Résumé : This work reports a kinetic study of monoacylglycerols production from olive oil in a solvent-free system using a commercial lipase in the presence of surfactant. For this purpose, a commercial immobilized lipase (Novozym 435) was employed as catalyst and sodium (bis-2-ethylhexyl) sulfosuccinate (Aerosol-OT or AOT) as surfactant. The experiments were performed in batch mode, recording the reaction kinetics over temperature range of 40−80 °C, enzyme concentration of 1−10 wt %, AOT addition of 5−20 wt %, and glycerol to oil molar ratio of 1:1−1:3. Results showed that lipase-catalyzed glycerolysis in a solvent-free system with the addition of AOT surfactant might be a promising route, as high reaction conversions to monoacylglycerols, greater than 70%, were achieved at mild temperatures and relatively low enzyme concentrations (∼5−7.5 wt %) in short reaction times (1 h). En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8013956 [article] Kinetics of solvent-free lipase-catalyzed production of monoacylglycerols from olive oil in aerosol-ot surfactant [texte imprimé] / Karina G. Fiametti, Auteur ; Suzimara Rovani, Auteur ; Débora de Oliveira, Auteur ; Marcos L. Corazza, Auteur . - 2009 . - p 708–712. chemical engenireeng Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°2 (Janvier 2009) . - p 708–712 Mots-clés : Monoacylglycerols Résumé : This work reports a kinetic study of monoacylglycerols production from olive oil in a solvent-free system using a commercial lipase in the presence of surfactant. For this purpose, a commercial immobilized lipase (Novozym 435) was employed as catalyst and sodium (bis-2-ethylhexyl) sulfosuccinate (Aerosol-OT or AOT) as surfactant. The experiments were performed in batch mode, recording the reaction kinetics over temperature range of 40−80 °C, enzyme concentration of 1−10 wt %, AOT addition of 5−20 wt %, and glycerol to oil molar ratio of 1:1−1:3. Results showed that lipase-catalyzed glycerolysis in a solvent-free system with the addition of AOT surfactant might be a promising route, as high reaction conversions to monoacylglycerols, greater than 70%, were achieved at mild temperatures and relatively low enzyme concentrations (∼5−7.5 wt %) in short reaction times (1 h). En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8013956