Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (6): 884.

• Articles • Previous Articles     Next Articles

Enantioselective Permeation of Amino Acids Through β-Cyclodextrin Polymer Membranes

LONG Yuan-De, HUANG Tian-Bao   

  1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041
  • Received:1998-12-14 Online:1999-06-24 Published:1999-06-24

Abstract: The β-cyclodextrin polymer membranes based on poly(vinyl alcohol) for enantioselective permeation of amino acids were described. The cyclodextrin membrane modified with acetic anhydride had higher permeation enantioselectivity of DL-amino acids than the unmodified membrane. The enhanced abilities were explained as a result of the additional steric hindrance effect besides inclusion. The maximum of enantiomeric excess for DLtryptophan was 25.4% with the permeation rate of D-tryptophan being up to 1.48×10-5g·mm-2h-1.

Key words: β-Cyclodextrin, β-Cyclodextrin polymer membrane, Membrane separation, Enantiomeric resolution, Amino acids

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