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Yeast and bacteria from ensiled high moisture maize grains as potential mitigation agents of fumonisin B 1
Author(s) -
Martinez Tuppia Ccori,
AtanasovaPenichon Vessela,
Chéreau Sylvain,
Ferrer Nathalie,
Marchegay Gisèle,
Savoie JeanMichel,
RichardForget Florence
Publication year - 2017
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.8058
Subject(s) - silage , mycotoxin , fumonisin b1 , fermentation , microorganism , food science , fusarium , moisture , fumonisin , bacteria , agronomy , contamination , biology , chemistry , horticulture , ecology , genetics , organic chemistry
BACKGROUND Fumonisin B 1 ( FB 1 ) is a mycotoxin produced by several Fusarium species and is a very common contaminant of maize‐based food and feed throughout the world. The selection and use of FB 1 ‐degrading microorganisms appears as a promising alternative to cope with the problem of toxicity towards humans and livestock. High moisture maize grain silage, which is based on natural maize fermentation, could be an interesting reservoir of such microorganisms. RESULTS Using an in vitro simulated silage model with FB 1 naturally contaminated grains, we demonstrated a significant raw decrease in FB 1 during ensiling process ascribed to biodegradation mechanisms. A panel of 98 bacteria and yeasts were isolated from this matrix and selected for their ability to use FB 1 as the sole source of C and N. For nine of them, the ability to degrade FB 1 in vitro was evidenced. Notably, two bacteria identified as Lactobacillus sp. were highlighted for their efficient FB 1 ‐degrading capacity and production of hydrolysed FB 1 as intermediate degradation metabolite. CONCLUSION Fermentation of high moisture maize grain contaminated with FB 1 leads to a significant reduction of the toxin and allows the isolation of FB 1 ‐degrading microorganisms that could further be used as FB 1 decontaminating agents. © 2016 Society of Chemical Industry