THE EFFECT OF BENTONITE ON AFB1, AFB2, AFG2 AND T-2 MYCOTOXINS DECOMPOSITION IN SUNFLOWER OIL UNDER THE IRRADIATION OF ULTRAVIOLET LIGHT

Journal article

Authors/Editors

Agachi, Paul

Research Areas

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Publication Details

Author list: Sandor G, Agachi PS

Publisher: UNIV ATHENS FIRST DEPT OBSTETR

Place: CLUJ-NAPOCA

Publication year: 2011

Journal acronym: STUD U BABES-BOL CHE

Volume number: 56

Issue number: 1

Start page: 249

End page: 259

Number of pages: 11

ISSN: 1224-7154

Languages: English-Great Britain (EN-GB)

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Abstract

Bentonite was used as a photocatalyst in the degradation of mycotoxins in sunflower oil, under UV-illumination. The objective of this study was to investigate and evaluate the efficiency of bentonite adding to sunflower oil to decompose the solubilised B1, B2, G2 aflatoxins and T-2 toxin by UV light irradiating, as solution to increase vegetable oil quality. Identification of decontaminating process particularities consists in the formulation of mathematical model which describes the influence of process parameters on the decomposition of mycotoxins. In the present work, decontamination process was studied at laboratory scale using a plug-flow photoreactor, serial connected with a buffer vessel, at constant operating temperature and irradiating time. The kinetics of photocatalytic process was assumed to follow a pseudo-first-order rate law. The apparent photodegradation rate constant depend strongly on the present mycotoxin, the bentonite catalyst contribute to obtain much lower mycotoxin concentrations. The model predicted maximum values of apparent photodegradation constants were compared with the experimental data, the model was verified.

Keywords

Aflatoxin B1, Aflatoxin B2, Aflatoxin G2, HPLC, Kinetics, Mycotoxins, photochemical degradation, reaction mechanism, sunflower oil, T-2 toxin, ultraviolet light

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