Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Enzyme-Catalyzed Transesterification Processes in Organic Solvents

미생물 계면활성제에 관한 연구(제3보);유기용매에서 효소를 촉매로 한 에스테르교환반응

  • Kim, Sang-Chun (Ind. & Eng. Chemistry, Chungbuk National University) ;
  • Nam, Ki-Dae (Ind. & Eng. Chemistry, Chungbuk National University)
  • 김상춘 (충북대학교 공과대학 화학공학과) ;
  • 남기대 (충북대학교 공과대학 화학공학과)
  • Published : 1992.05.31
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Abstract

Lipases catalyzed the transesterification reaction between esters and various primary and secondary alcohols in a 99% organic medium, porcine pancreatic, yeast, mold lipases can vigorously act as catalysts in a number of nearly anhydrous organic solvents. Various transesterification reactions catalyzed by porcine pancreatic lipase in hexane obey Michaelis-Menten kinetics. The dependence of the catalytic activity of the enzyme in organic media on the pH of the aqueous solution from which it was recovered is bell-shaped, with the maximum coinciding with the pH optimum of the enzymatic activity in water. The catalytic power exhibited by the lipases in organic solvents is comparable to that displayed in water. In addition to transesterification, lipases Can catalyze several other processes in organic media.

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