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Tri-octahedral bentonites as potential technological feed additive for Fusarium mycotoxin reduction

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Issue date
2020-06-12
Author
Vila Donat, P.
Marín Sillué, Sònia
Sanchís Almenar, Vicente
Ramos Girona, Antonio J.
Suggested citation
Vila Donat, P.; Marín Sillué, Sònia; Sanchís Almenar, Vicente; Ramos Girona, Antonio J.; . (2020) . Tri-octahedral bentonites as potential technological feed additive for Fusarium mycotoxin reduction. Food Additives & Contaminants: Part A, 2020, vol. 37, núm. 8, p. 1374-1387. https://doi.org/10.1080/19440049.2020.1766702.
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Abstract
In 2009 the EU Regulation 386/2009 established a new functional group of feed additives called 'substances for reduction of the contamination of feed by mycotoxin'. Later, di-octahedral bentonite (1 m558) was authorised, as an anti-aflatoxin additive, being the only additive of this group authorised to date. This work aims to demonstrate the effectiveness of other bentonites, such as tri-octahedral bentonites, versus Fusarium-mycotoxins, since very few adsorbents have proved their effectiveness in relation to this group of mycotoxins. For this purpose, 7 bentonites (six of them tri-octahedral) and 7 commercial adsorbents, added at 0.02% (w/v), were assayed in an in vitro adsorption experiment using two simulated gastro-intestinal (GI) juices (pH 1.3 and 6.8) versus zearalenone (ZEN: 0.1-5 mg/L), fumonisin B1 (FB1: 1-10 mg/L) and deoxynivalenol (DON: 2-10 mg/L). Mycotoxin adsorption data were fitted to Langmuir and Freundlich isotherms. In vitro adsorption experiments showed that ZEN and FB1 (in the latter case only in acid medium) were partially adsorbed, while the adsorption of DON was negligible. Moreover, the increase of adsorbent dose (up to 0.20%, w/v) significantly improved the in vitro adsorption of ZEN and FB1, reaching >90% of adsorption. The present work proposes the use of some tri-octahedral bentonites as feed additives for Fusarium-mycotoxin reduction.
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http://hdl.handle.net/10459.1/69136
DOI
https://doi.org/10.1080/19440049.2020.1766702
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Food Additives & Contaminants: Part A, 2020, vol. 37, núm. 8, p. 1374-1387
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  • Publicacions de projectes de recerca del Plan Nacional [2635]
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