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Pseudomonas cepacia lipase - mediated transesterification reactions of hydrocinnamates

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Title Pseudomonas cepacia lipase - mediated transesterification reactions of hydrocinnamates
 
Creator Priya, K
Venugopal, T
Chadha, Anju
 
Description 259-263
Use of lipase from Pseudomonas cepacia in
transesterifcation reactions of ethyl hydrocinnamate with different alcohols

has been examined. Among the alcohols tested, viz., n-butanol, iso-amyl alcohol, benzyl alcohol, n-octanol and 1-phenylethanol, only n-butanol yielded the transesterified
product. Among the solvents tested, viz., n-heptane,
n-hexane, cyclohexane, toluene,
diisopropylether and n-butanol, the
initial rate of transesterification proceeded in the order

cyclohexane > n-heptane > n-hexane
> diisopropylether > n-butanol > toluene. Using hexane as the solvent and a substrate

to enzyme ratio of  1 :5, the substrate to alcohol ratio was
varied to maximize the yield. n-Butyl
hydrocinnamate was obtained

in 92% yield in 48 hr by employing a 1:1
(wt/wt) ratio of ethyl hydrocinnamate to lipase and a 1:5 (vol/vol) ratio of
ethyl

hydrocinnamate to n-butanol
in hexane.
 
Date 2012-12-22T19:58:19Z
2012-12-22T19:58:19Z
2002-08
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://hdl.handle.net/123456789/15269
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJBB Vol.39(4) [August 2002]