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《Journal of Beijing University of Chemical Technology(Natural Science Edition)》 2007-05
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Substrate inhibition of wax ester synthesis catalyzed by immobilized lipase Candida sp.99-125

ZHAO JingJing1 WANG Fang1,2 DENG Li1,2 TAN TianWei1,2 (1.College of Life Science and Technology;2.Beijing Key Laboratory of Bioprocess,Beijing University of Chemical Technology,Beijing 100029,China)  
The synthesis of cetyl palmitate in hexane has been investigated with immobilized lipase Candida sp.99-125 prepared in our laboratory as the catalyst.The kinetics of the reaction were found to be consistent with the Ping-Pong Bi-Bi mechanism,which is characterized by inhibition by both alcohol and acid.The long-chain alcohol was shown to be the primary competitive inhibitor of the esterification.The inhibition effects of both substrates were studied in three different concentration ranges.Appropriate kinetic models for different substrate concentrations are proposed and the apparent kinetic parameters are calculated.
【Fund】: 国家自然科学基金(20576013);; 国家“973”计划(2003CB716002);; 北京市自然基金(2071002);; 北京市科技计划(D0205004040211)
【CateGory Index】: O621.2
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1 LIU Ning,LIU Ya-nan,LIU Tao,LI Jian,LU Zhan-guo(Key Laboratory for Food Science and Engineering of Heilongjiang Province,College of Food Engineering,Harbin University of Commerce,Harbin 150076,China);Study on the synthesis and current situation of L-ascorbic acid esters derivatives[J];Science and Technology of Food Industry;2012-22
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