LIPASE-MEDIATED PRODUCTION OF ETHYL BUTYRATE AND BUTYL BUTYRATE IN NONAQUEOUS SYSTEMS

被引：50
|
作者：
WELSH, FW
WILLIAMS, RE
机构：
[1] Division of Biological Sciences, National Research Council Canada, Ottawa, Ont.
来源：
ENZYME AND MICROBIAL TECHNOLOGY | 1990年 / 12卷 / 10期
关键词：
esterification; Lipase; nonaqueous medium; pH effect; substrate effects; temperature effect;
D O I：
10.1016/0141-0229(90)90145-G
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Lipases (EC 3.1.1.3) from Candida cylindracea, porcine pancreas, and Aspergillus niger (two types) were compared as catalysts for ethyl butyrate and butyl butyrate synthesis at 30 and 50°C using hexane as a reaction medium. Each enzyme had a distinct pH profile. The esterification catalysed by each lipase was inhibited by increasing the substrate concentration beyond a defined amount, but the concentration required varied from enzyme to enzyme and with the ester being formed. When the reaction temperature was raised from 30 to 50°C, ethyl butyrate synthesis was inhibited while butyl butyrate synthesis was enhanced with all enzymes tested. Overall, Candida cylindracea lipase produced the highest concentrations and yields of both esters. © 1990.
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收藏
页码：743 / 748
页数：6
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