Abstract
Lipase (triacylglycerol acylhydrolase; EC: 3.1.1.3) from Candida rugosa has been chemically modified by reductive alkylation with aldehydes of various chain length and steric hindrance. Modified lipase showed reduced esterolytic activity but higher specific activity of esterification compared to native enzyme. The maximal esterification activity of the alkylated lipase depends on its degree of derivatization by the respective aldehydes. Lipase derivatized with octaldehyde and dodecylaldehyde are more thermostable than those modified with aldehydes with shorter chain length. Alkylated lipases are relatively more stable in organic solvent than native enzyme.
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