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Enzymatic syntheses of L-valyl, L-leucyl and L-isoleucyl esters of carbohydrates using Candida rugosa lipase

Bhandya R, Somashekar and Soundar, Divakar (2007) Enzymatic syntheses of L-valyl, L-leucyl and L-isoleucyl esters of carbohydrates using Candida rugosa lipase. Indian Journal of Chemistry, 46B. pp. 2026-2044.

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Abstract

L-Valyl 1 L-leucyl 2 and L-isoleucyl 3 esters of carbohydrates 4-14 have been prepared through lipase catalysis using Candida rugosa lipase in organic media. This enzymatic esterification involving unprotected and unactivated L-amino acids 1-3 and carbohydrates, comprising, aldohexoses 4-6, ketohexose 7, pentoses 8-9, disaccharides 10-12 and carbohydrate alcohols 13-14, results in the formation of both monoesters (1-0-, 2-0-, 3-0-, 4-0, 5-0-, 6-0- and &-0-) and diesters (1,6-di-O-, 2,5-di-O-, 2,6-di-O-, 3,6-di-O-, 4,6-di-O- and 6,6'-di-0-) with conversion yields in the range 21-68%. Among 70 esters synthesized on the whole, 65 esters are reported here for the first time.

Item Type: Article
Uncontrolled Keywords: : Candida rugosa lipase, diastereomeric, esters, enzymatic, esterification, amino acids, carbohydrates, L-valyl, L-leucyl, L-isoleucyl
Subjects: 600 Technology > 05 Chemical engineering > 04 Fermentation Technology
600 Technology > 08 Food technology > 16 Nutritive value > 01 Carbohydrates
Divisions: Fermentation Technology and Bioengineering
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 08 Jan 2008 09:21
Last Modified: 28 Dec 2011 09:32
URI: http://ir.cftri.com/id/eprint/1610

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