Martins AB, Friedrich JLR, Cavalheiro JC, Garcia-Galan C, Barbosa O, Ayub MAZ, Fernandez-Lafuente R, Rodrigues RC. Improved production of butyl butyrate with lipase from Thermomyces lanuginosus immobilized on styrene-divinylbenzene beads.
BIORESOURCE TECHNOLOGY 2013;
134:417-22. [PMID:
23499180 DOI:
10.1016/j.biortech.2013.02.052]
[Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 02/15/2013] [Accepted: 02/16/2013] [Indexed: 05/24/2023]
Abstract
Two immobilized preparations from Thermomyces lanuginosus lipase (TLL) were compared in the synthesis of butyl butyrate. The commercial Lipozyme TL-IM, and TLL immobilized on styrene-divinylbenzene beads (MCI-TLL) were tested in the esterification reaction using n-hexane as solvent. The variables temperature (30-60°C), substrate molar ratio (1:1 to 5:1), added water (0-1%), and biocatalyst content (3-40%) were evaluated in terms of initial reaction rate for each biocatalyst. SDS-PAGE analysis revealed that MCI-TLL had an immobilized enzymatic load twice as high as Lipozyme TL-IM, but with an activity 3-fold higher. MCI-TLL presented high initial reaction rates up to 1.0 M butyric acid, while Lipozyme TL-IM showed a decrease in its activity above 0.5 M. Moreover, MCI-TLL allowed a productivity of 14.5 mmol g(-1) h(-1), while Lipozyme TL-IM 3.2 mmol g(-1) h(-1), both by mass of biocatalyst.
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