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Title

Enzymatic strategies for solvent-free production of short and medium chain phytosteryl esters

AuthorsTorrelo, Guzmán; Torres, Carlos F. ; Reglero, Guillermo
KeywordsPhytosteryl ester
Candida rugosa lipase
Butyric acid
Pseudomonas stutzeri TL lipase
Issue Date2012
PublisherWiley-VCH
CitationEuropean Journal of Lipid Science and Technology 114(6): 670-676 (2012)
AbstractTransesterification of phytosterols with short and medium chain fatty acids (MCFAs) ethyl esters and with tributyrin catalyzed by Candida rugosa and Pseudomonas stutzeri TL lipases in solvent-free medium was studied including the effects of temperature, fatty acid specificity, enzyme quantity, the residual activity of each lipase and reduced pressure. More than the 90% of the original phytosterols were transformed into their corresponding phystosteryl esters after 3-4h reaction at 50-60°C and at 100-350mbar. The product mixtures containing 40-50% (w/w) phystosteryl esters were then vacuum distilled to remove molar excess of SCFA and MCFA ethyl esters utilized in the enzymatic reaction. By this methodology, purities >95% in short and medium chain phytosteryl esters were finally obtained. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
URIhttp://hdl.handle.net/10261/101300
DOI10.1002/ejlt.201100346
Identifiersdoi: 10.1002/ejlt.201100346
issn: 1438-7697
e-issn: 1438-9312
Appears in Collections:(CIAL) Artículos
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