Enzymes and their use
作者： Carrington S. Cobbs , Adrien P. Malick , Gary J. Calton , Animesh Goswami , John P. Hamman
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摘要: ABSTRACT OF THE DISCLOSURE A lipase or isozyme from Candida rugosa is used to stereoselectively hydrolyze esters, esterify acids transesterify esters in aqueous/organic systems. Esters of 2-substituted such as 2-(4-hydroxyphenoxy) propionic acid, where the acid not substituted at 2-position with halogen, are hydrolyzed high enantiomeric excess presence an organic solvent. reducing agent may be present prevent oxidation and its esters. Two isozymes purified by ion exchange chromatography isoelectric focusing, for stereoselective hydrolysis esterification transesterification The immobilized, immobilization improved polyvinyl alcohol stearic acid. a fatty ester during reaction increases rate stereoselectivity reaction.
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