Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Kinetics for Selective Synthesis of Enzymatic Long Chain Alkyl Monoglycerid

효소반응에 의한 장쇄 알킬모노글리세리드의 선택적 합성에 있어 동력학적 고찰

  • Kim, S.C. (Dept. of Ind. Chemisty Chungbuk Nat. University) ;
  • Kim, H.S. (Department of Chemical Industry Choongchung) ;
  • Joe, K.H. (Institution of Korea Standard Research) ;
  • Nam, K.D. (Dept. of Ind. Chemisty Chungbuk Nat. University)
  • 김상춘 (충북대학교 공과대학 공업화학과) ;
  • 김홍수 (충청실업전문대학 화학공학과) ;
  • 조경형 (한국표준연구소) ;
  • 남기대 (충북대학교 공과대학 공업화학과)
  • Published : 1993.05.31
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Abstract

1, 2-Isopropylidene glycerol produced by ketalyzation of glycerol with aceton was esterified with long chain fatty acids in the presence of a Mucor miehei lipase to obtain 1, 2-isopropylidene 3-long chain acyl glycerol. To determine optimal conditions for the esterification reaction, esterification was proceeded as a reversible second-order reaction in various parameters that are enzyme/substrate ratio 0.096g/g at reaction temperatures ranged from $25^{\circ}C$ to $70^{\circ}C$. The order of reaction rate of fatty acids were lauric acid, myristic acid, oleic acid, and stearic acid. The range of their activation energies were from 7.8 to 11.4 (kcal/mol) and that of entropies of activation which have negative values were from 42.8 to 52.5(e.u.).

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