Screening of fermentative bacteria for their ability to bind and biotransform deoxynivalenol, zearalenone and fumonisins in an <i>in vitro</i> model simulating corn silage
2007
Niderkorn, Vincent | Morgavi, Diego | Pujos, Estelle | Tissandier, Antoine | Boudra, Hamid | Lallemand SAS | Unité de Recherches sur les Herbivores (URH) ; Institut National de la Recherche Agronomique (INRA) | Unité de Nutrition Humaine (UNH) ; Institut National de la Recherche Agronomique (INRA)-Université d'Auvergne - Clermont-Ferrand I (UdA)-Clermont Université
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Show more [+] Less [-]English. Fermentative bacteria can potentially be utilized to detoxify corn silages contaminated by <i>Fusarium</i> toxins. The objective of the present study was to test a large number of these bacteria for their ability to bind and/or biotransform deoxynivalenol (DON), zearalenone (ZEN), and fumonisins B<sub>1</sub> and B<sub>2</sub> (FB<sub>1</sub>, FB<sub>2</sub>) in conditions simulating corn silage. A total of 202 strains were screened in contaminated, pH 4, corn infusion inoculated with 5 × 10<sup>8</sup> CFU ml<sup>-1</sup>. Eight <i>Lactobacilli</i> and three <i>Leuconostoc</i> biotransformed ZEN into α zearalenol, but no biotransformation was detected for DON and fumonisins. In contrast, most strains were capable to bind <i>Fusarium</i> toxins. The most effective genera were <i>Streptococcus</i> and <i>Enterococcus</i> capable to bind up to 33%, 49%, 24% and 62% of DON, ZEN, FB<sub>1</sub> and FB<sub>2</sub>, respectively. The ability to bind <i>Fusarium</i> toxins seems to be a common property of fermentative bacteria and could contribute to decrease their toxicity in animals.
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