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

真菌毒素 吸附 黄曲霉毒素 玉米赤霉烯酮 弗伦德利希方程 化学 镰刀菌 伏马菌素B1 朗缪尔 膨润土 八面体 核化学 食品科学 有机化学 化学工程 植物 生物 工程类 晶体结构
作者
Pilar Vila‐Donat,Sonia Marı́n,Vicente Sanchís,Antonio J. Ramos
出处
期刊:Food Additives & Contaminants: Part A [Taylor & Francis]
卷期号:37 (8): 1374-1387 被引量:9
标识
DOI:10.1080/19440049.2020.1766702
摘要

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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