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Updated: Aug 11, 2026

Split-and-pool Synthesis and Characterization of Peptide Tertiary Amide Library
Published on: June 20, 2014
Polyvinyl alcohol--trypsin as a catalyst for amino acid ester synthesis in organic media
Yesim Yesiloglu1, Ismail Kilic
1Department of Chemistry, Trakya University, Edirne, Turkey. yesimyesiloglu@trakya.edu.tr
Abstract:
The bovine trypsin-catalyzed synthesis of N-alpha-benzoyl-DL-arginine esters from N-benzoyl-DL-arginine were studied in various organic solvents. Trypsin was immobilized to polyvinyl alcohol (PVA) by adsorption from its aqueous solutions. Immobilized enzyme showed higher catalytic activities than free enzyme for amino acid esterification in ethanol. The yield of ester is strongly dependent upon the PVA/trypsin ratio and water content in the reaction medium. The rate and equilibrium constant of the ester formation reaction are also dependent on water content.
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