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Titolo:
Enhancement of activity of sol-gel immobilized lipase in organic media by pretreatment with substrate analogues
Autore:
Furukawa, S; Ono, T; Ijima, H; Kawakami, K;
Indirizzi:
Kyushu Univ, Grad Sch Engn, Dept Mat Proc Engn, Higashi Ku, Fukuoka 8128581, Japan Kyushu Univ Fukuoka Japan 8128581 gn, Higashi Ku, Fukuoka 8128581, Japan
Titolo Testata:
JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC
fascicolo: 1-3, volume: 15, anno: 2001,
pagine: 65 - 70
SICI:
1381-1177(20010928)15:1-3<65:EOAOSI>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
MODIFIED SILICATES; PANCREATIC-ISLETS; ENCAPSULATION; ENTRAPMENT; ALGINATE; CELLS; ACID;
Keywords:
sol-gel method; lipase; esterification; substrate analogue; organic-inorganic hybrid silicate;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Furukawa, S Kyushu Univ, Grad Sch Engn, Dept Mat Proc Engn, Higashi Ku, Hakozaki, Fukuoka 8128581, Japan Kyushu Univ Hakozaki Fukuoka Japan 8128581 oka 8128581, Japan
Citazione:
S. Furukawa et al., "Enhancement of activity of sol-gel immobilized lipase in organic media by pretreatment with substrate analogues", J MOL CAT B, 15(1-3), 2001, pp. 65-70

Abstract

By performing pretreatment with substrate analogues, an activation of lipase immobilized into organic-inorganic hybrid silicate was attempted in esterification of menthol with butyric acid in organic media. With decreasing water content of immobilized lipase preparations, the activity of immobilized lipases by (-)-menthol pretreatment was enhanced, and the highest activity was obtained at water activity, a(W) = 0.11. However, the pretreatment ofimmobilized lipases with (-)-menthol could not improve the enantioselectivity. In addition, the activity of pretreated immobilized lipases increased with increasing the chain length of alcohol as a substrate analogue. Consequently, it was found that hydrophobic and bulky alcohol was an effective substrate analogue to activate immobilized lipases. (C) 2001 Elsevier ScienceBY. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/11/17 alle ore 03:44:44