Lipase catalyzed esterification of cresols.

Suresh Babu, C. V. and Karanth, N. G. and Divakar, S. (2002) Lipase catalyzed esterification of cresols. Indian Journal of Chemistry, 41B (5). pp. 1068-1071.

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Abstract

Esters of m- and p-cresols with organic acids having carbon chain lengths C2-C18 have been prepared by using lipases from porcine pancreas and Rhizomucor miehei. Gram level conversions are carried out under non-solvent conditions in case of shake flask experiments and continuous removal of water at bench-scale levels. Addition of 0.1 mL of 0.1M phosphate buffer at pH 7.0 to the reaction mixture shows better conversions. Optimization studies have been carried out for p-cresyl laurate synthesis using Rhizomucor miehei lipase which show a maximum conversion of 74.4%. Better conversions are obtained with larger amounts of enzyme. Porcine pancrease lipase catalyzed synthesis of m- and p-cresyl esters show that under identical reaction conditions acids with lower carbon chain lengths (C2-C4) give ester yields above 30%, while those with longer carbon chain lengths give ester yields < 30%.

Item Type:	Article
Uncontrolled Keywords:	Rhizomucor miehei; Enzymes
Subjects:	600 Technology > 08 Food technology > 08 Food Chemistry
Divisions:	Fermentation Technology and Bioengineering
Depositing User:	Somashekar K.S
Date Deposited:	12 Jul 2011 11:22
Last Modified:	12 Jul 2011 11:22
URI:	http://ir.cftri.res.in/id/eprint/4559

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