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dc.contributor.authorOrtega-Requena, S.-
dc.contributor.authorGómez, J.L.-
dc.contributor.authorMáximo, F.-
dc.contributor.authorMontiel, M.C.-
dc.contributor.authorMurcia, M.D.-
dc.description.abstractBACKGROUND Different strategies for the solvent-free enzymatic production of polyglycerol polyricinoleate (PGPR) were explored in an attempt to simplify and improve the process. Besides the conventional procedure (obtaining polyricinoleic acid, followed by its esterification with polyglycerol), two alternative methods are proposed: (1) reversing the synthesis order, i.e. esterification of polyglycerol with ricinoleic acid and then the condensation of ricinoleic acid with the previously obtained polyglycerol ester; and (2) the enzymatic synthesis of PGPR in a single-step process. RESULTS The reaction sequences were carried out in an open-air reactor with free and immobilised lipases (triacylglycerol acylhydrolases, E.C. Candida rugosa lipase to obtain polyricinoleic acid and Rhizopus oryzae lipase for the esterification of polyglycerol with the carboxyl group of ricinoleic or polyricinoleic acid. A co-immobilised derivative containing both lipases was used to catalyse the single-stage scheme. The three processes were carried out in a vacuum reactor, obtaining in every case PGPR that complied with the legal specifications of the European Community and recommendations provided in the Food Chemical Codex. CONCLUSION The results demonstrate that all three protocols are viable for the enzymatic synthesis of PGPR and require similar reaction times. The single-stage scheme is easier to carry out. © 2014 Society of Chemical Industryes_ES
dc.relationÁmbito del proyecto (Europeo, nacional o regional): Nacional Agencia/entidad financiadora: Ministerio de Ciencia e Innovación Convocatoria: Nombre del proyecto: Biosíntesis de emulsionantes con aplicaciones alimentarias y cosmeticas, en sistemas solvent free, utilizando lipasas comerciales. Código: CTQ2011-24091es_ES
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.titleStudy of different reaction schemes for the enzymatic synthesis of polyglycerol polyricinoleatees_ES
Aparece en las colecciones:Artículos: Ingeniería Química

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