Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Response surface modelling of the production of omega-3 polyunsaturated fatty acids-enriched fats by a commercial immobilized lipase
Autore:
Osorio, NM; Ferreira-Dias, S; Gusmao, JH; da Fonseca, MMR;
Indirizzi:
Inst Super Agron, P-1349017 Lisbon, Portugal Inst Super Agron Lisbon Portugal P-1349017 n, P-1349017 Lisbon, Portugal Inst Super Tecn, Ctr Engn Biol & Quim, P-1049001 Lisbon, Portugal Inst Super Tecn Lisbon Portugal P-1049001 im, P-1049001 Lisbon, Portugal
Titolo Testata:
JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC
fascicolo: 4-6, volume: 11, anno: 2001,
pagine: 677 - 686
SICI:
1381-1177(20010122)11:4-6<677:RSMOTP>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
STRUCTURED LIPIDS; CATALYZED INTERESTERIFICATION; ENZYMATIC TRANSESTERIFICATION; DOCOSAHEXAENOIC ACIDS; CONTINUOUS REACTOR; VEGETABLE-OILS; ACYL MIGRATION; PALM STEARIN; OLIVE OIL; FISH-OIL;
Keywords:
lipase; omega-3 polyunsaturated fatty acid; response surface design; transesterification;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
58
Recensione:
Indirizzi per estratti:
Indirizzo: Ferreira-Dias, S Inst Super Agron, Tapada Ajuda, P-1349017 Lisbon, Portugal Inst Super Agron Tapada Ajuda Lisbon Portugal P-1349017
Citazione:
N.M. Osorio et al., "Response surface modelling of the production of omega-3 polyunsaturated fatty acids-enriched fats by a commercial immobilized lipase", J MOL CAT B, 11(4-6), 2001, pp. 677-686

Abstract

The aim of this study was to model the production of fats, enriched with omega -3 polyunsaturated fatty acids (omega -3 PUFA) for nutraceutical purposes, via the response surface methodology. These fats were obtained by transesterification of palm oil stearin (POS) with a concentrate (EPAX 2050TG) of triglycerides enriched with omega -3 PUFA and soybean oil, catalysed by a commercial immobilized Candida antarctica lipase ("Novozym 435"). The initial water activity (a(w)) of the biocatalyst, POS and EPAX 2050TG concentrations, time and temperature showed a significant effect on the transesterification reaction, as well as on the competing reactions of hydrolysis and lipid oxidation. Depending on the factors included, the transesterification reaction was described either by first- or second-order models. The production of free fatty acids, which is ascribed both to the hydrolytic reaction and the mechanism of lipase-catalysed transesterification, showed a second-order dependence on the initial a, of the biocatalyst. (C) 2001Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 16:17:30