SYNTHESIS OF VARIOUS KINDS OF ESTERS BY 4 MICROBIAL LIPASES

  • 1 January 1979
    • journal article
    • research article
    • Vol. 575  (1) , 156-165
Abstract
Ester synthesis by microbial lipases, using homogeneous enzyme preparations, was investigated. The amount of synthesized ester was estimated by alkalimetry, and products were identified by TLC and IR spectroscopy. Lipases from Aspergillus niger, Rhizopus delemar, Geotrichum candidum and Penicillium cyclopium synthesized esters from oleic acid and various primary alcohols. Only G. candidum lipase synthesized esters of secondary alcohols. Esters of tertiary alcohols, phenols or sugar alcohols were not synthesized by any lipase. Rather high concentrations of alcohol were required to synthesize the esters of ethylene glycol, propylene glycol or trimethylene glycol. Lipases from A. niger and R. delemar synthesized oleyl esters of various fatty acids and some dibasic acids. In contrast, lipases from G. candidum and P. cyclopium synthesized oleyl esters only from medium or long chain fatty acids.

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