Potential alternative for using the glycerol generated in the biodiesel production: enzymatic synthesis of monolaurin by esterification

Quimica nova

Santos, Julio C.¹  Freitas, Larissa¹  Barcza, Marcos V.¹  Castro, Heizir F. de¹ 

[1] Universidade de São Paulo, Lorena, Brasil

关键词: glycerol;    lipase;    factorial design.;   

DOI  :  10.1590/S0100-40422009000900007

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Esterificationreactions of glycerol with lauric acid in solvent free system were carried outusing lipases from several sources. All lipases were immobilized on polysiloxane-polyvinylalcohol particles by covalent binding with high activity recovered. Among thetested enzymes, the Candida antarctica lipase allowed to attain the highestmolar conversion (76%), giving similar proportions of monolaurin, dilaurin andlow amount of trilaurin. To further improve the process, the Response SurfaceMethodology (RSM) was used and optima temperature and molar ratio glycerol tolauric 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 closeagreement with the statistical model prediction.

【 授权许可】

CC BY