BMB Reports

Korean Society for Biochemistry and Molecular Biology (생화학분자생물학회)
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Kinetic Study of the Lipase-Catalyzed Interesterification of Triolein and Stearic Acid in Nonpolar Media

  • Chi, Young-Min (Department of Agricultural Chemistry, College of Natural Resources, Korea University)
  • Received : 1996.09.23
  • Published : 1997.01.31
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Abstract

The kinetics of the interesterification of triolein and stearic acid catalyzed by immobilized Rhizopus delemar lipase were studied in a batch operation. In order to clarify the mechanisms of this reaction, three models are discussed under various conditions in terms of the ratio of triolein and stearic acid. The rate constants involved in the proposed model were determined by combining the numerical Gauss-elemination method, and the trial-and-error method so as to fit the calculated results with the experimental data. The accuracy of the obtained rate constants was confirmed after they were substituted for simultaneous differential equations and the equations simulated using an adaptive step-size Runge-Kutta method. Finally, the model which agrees with the calculated results and the experimental data was selected.

Keywords

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