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Titolo:
INTERACTION BETWEEN CYCLODEXTRINS AND AFLATOXINS Q(1), M-1 AND P-1 - FLUORESCENCE AND CHROMATOGRAPHIC STUDIES
Autore:
FRANCO CM; FENTE CA; VAZQUEZ BI; CEPEDA A; MAHUZIER G; PROGNON P;
Indirizzi:
UNIV PARIS 11,FAC PHARM,LAB CHIM ANALYT 2,RUE JB CLEMENT F-92290 CHATENAY MALABR FRANCE UNIV PARIS 11,FAC PHARM,LAB CHIM ANALYT 2 F-92290 CHATENAY MALABR FRANCE FAC VET,DEPT QUIM ANALIT NUTR & BROMATOL,LAB HIGIENE & INSPECC ALIMENTOS LUGO 27002 SPAIN
Titolo Testata:
Journal of chromatography
fascicolo: 1, volume: 815, anno: 1998,
pagine: 21 - 29
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERFORMANCE LIQUID-CHROMATOGRAPHY; IMMUNOAFFINITY COLUMN CLEANUP; REVERSED-PHASE CHROMATOGRAPHY; REPUBLIC-OF-CHINA; BETA-CYCLODEXTRIN; MOBILE PHASE; ENHANCEMENT; COMPLEXES; ENTHALPY; ENTROPY;
Keywords:
THERMODYNAMIC PARAMETERS; COMPLEXATION; FLUORESCENCE DETECTION; AFLATOXINS; CYCLODEXTRINS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
C.M. Franco et al., "INTERACTION BETWEEN CYCLODEXTRINS AND AFLATOXINS Q(1), M-1 AND P-1 - FLUORESCENCE AND CHROMATOGRAPHIC STUDIES", Journal of chromatography, 815(1), 1998, pp. 21-29

Abstract

The fluorescence properties of the aflatoxins M-1, Q(1), P-1 in solution and the effect of various cyclodextrins (alpha-, beta-, gamma-, hydroxypropyl-beta- and alpha-beta-heptakis-di-O-methyl-beta-) on their fluorescence emission were studied. Among the aflatoxins, a substantial enhancement of the fluorescence emission of aflatoxin Q(1) in the presence of aqueous solutions of alpha-, beta-, hydroxypropyl-beta, and alpha-beta-heptakis-di-O-methyl-beta-cyclodextrin was observed. On thecontrary, gamma-cyclodextrin proved to be inefficient to enhance the fluorescence properties of this compound. No important fluorescence enhancement was found for aflatoxins P-1 or M-1 for any of the cyclodextrin derivatives tested. The complex formation constant (K-f) of these compounds with beta-cyclodextrin was chromatographically determined, and from the results obtained, we can conclude that K-f cannot be used alone to explain the fluorescence increase. Thermodynamic studies showed that Delta H and Delta S parameters, associated with the partition of aflatoxins in RP-HPLC, increased when beta-cyclodextrin was added to the eluent. (C) 1998 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 31/03/20 alle ore 19:33:00