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Enhanced enzyme activity and enantioselectivity of lipases in organic solvents by crown ethers and cyclodextrins

โœ Scribed by Yurie Mine; Kimitoshi Fukunaga; Kyoko Itoh; Makoto Yoshimoto; Katsumi Nakao; Yoshiaki Sugimura

Book ID
114399447
Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
1001 KB
Volume
95
Category
Article
ISSN
1389-1723

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## Abstract Colyophilization or codrying of subtilisin Carlsberg with the crown ethers 18โ€crownโ€6, 15โ€crownโ€5, and 12โ€crownโ€4 substantially improved enzyme activity in THF, acetonitrile, and 1,4โ€dioxane in the transesterification reactions of __N__โ€acetylโ€Lโ€phenylalanine ethylester and 1โ€propanol a

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## Abstract Lipase from __Burkholderia cepacia__ (lipase BC) and lipase B from __Candida antarctica__ (CALB) show an increase of the transesterification activity in toluene (up to 2.4โ€ and 1.7โ€fold, respectively), when lyophilized with 18โ€crownโ€6. Nevertheless, the increase was observed only for lo