Enantiomeric selective adsorption of amino acid by polysaccharide composite materials.

ABSTRACT: A composite containing cellulose (CEL) and chitosan (CS) synthesized by a simple and recyclable method by using butylmethylimmidazolium chloride, an ionic liquid, was found to exhibit remarkable enantiomeric selectivity toward the adsorption of amino acids. The highest adsorption capacity and enantiomeric selectivity are exhibited by 100% CS. A racemic amino acid can be enantiomerically resolved by 100% CS in about 96-120 h. Interestingly, adsorption by 50:50 CEL/CS is more similar to that by 100% CS than to 100% CEL. Specifically, whereas 100% CEL has the lowest adsorption capacity and enantiomeric selectivity, 50:50 CEL/CS has sufficient enantiomeric selectivity to enable it to be used for chiral resolution. This is significant because in spite of its high enantiomeric selectivity 100% C

SUBMITTER: Duri S 

PROVIDER: S-EPMC3929103 | biostudies-literature | 2014 Jan

REPOSITORIES: biostudies-literature