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Titolo:
Enzymatic synthesis of structured lipids
Autore:
Iwasaki, Y; Yamane, T;
Indirizzi:
Nagoya Univ, Grad Sch Bio & Agrosci, Lab Mol Biotechnol, Chikusa Ku, Nagoya, Aichi 4648601, Japan Nagoya Univ Nagoya Aichi Japan 4648601 a Ku, Nagoya, Aichi 4648601, Japan
Titolo Testata:
JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC
fascicolo: 1-3, volume: 10, anno: 2000,
pagine: 129 - 140
SICI:
1381-1177(20000904)10:1-3<129:ESOSL>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
RHIZOPUS-DELEMAR LIPASE; MEDIUM-CHAIN TRIGLYCERIDES; FATTY-ACID SPECIFICITY; CATALYZED SYNTHESIS; PANCREATIC LIPASES; ABSORPTION; HYDROLYSIS; STEREOSELECTIVITY; TRIACYLGLYCEROL; GLYCEROL;
Keywords:
lipase; triacylglycerols; esterification; transesterification; acidolysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Yamane, T Nagoya Univ, Grad Sch Bio & Agrosci, Lab Mol Biotechnol, ChikusaKu, Furo Cho, Nagoya, Aichi 4648601, Japan Nagoya Univ Furo Cho Nagoya Aichi Japan 4648601 i 4648601, Japan
Citazione:
Y. Iwasaki e T. Yamane, "Enzymatic synthesis of structured lipids", J MOL CAT B, 10(1-3), 2000, pp. 129-140

Abstract

Lipases are powerful tools for the syntheses of structured lipids (SLs) which are triacylglycerols (TGs) having particular fatty acid (FA) residues at specific positions. With respect to the number of FA species and their distribution in glycerol molecule, TGs are classified into several types; AAA, ABA, AAB, and ABC types. Among them, AAA-type TGs can be synthesized fromFA and glycerol either chemically or enzymatically. Even at stoichiometricmixture of the substrates, almost complete reaction is possible. Synthesesof the other types of TGs require positionally specific reactions, for which the use of regiospecific lipases are effective. ABA-type SLs are synthesized by (1) sn-1,3-position-specific lipase-catalyzed interesterification of two different TGs, (2) sn-1,3-position-specific lipase-catalyzed acyl exchange of TG with FA or with FA ethylester (FAEt), (3) sn-1,3-position-specific lipase-catalyzed acylation of glycerol with FA giving symmetric 1,3-diacyl-sn-glycerol, followed by chemical acylation at sn-2 position. ABB-type SL is prepared by lipase-catalyzed monosubstitution at either sn-1 or -3 position of TG with FA or with FAEt, avoiding formation of disubstituted by-product. Stereopreference to sn-1 position over sn-3 position of a certain kind of lipase enables the syntheses of chiral ABB- and ABC-type TGs. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/04/20 alle ore 22:11:45