Biological control of AFB1-producing Aspergillus section Flavi strains isolated from brewer's grains, alternative feed intended for swine production in Argentina

ASURMENDI, PAULA; GARCÍA, MARÍA JOSÉ; RUIZ, FRANCISCO; DALCERO, ANA; PASCUAL, LILIANA; BARBERIS, LUCILA

JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART B - PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES

TAYLOR & FRANCIS INC

Lugar: Londres; Año: 2016

0360-1234

The aim of the present study was to investigate the inhibitory activity of lactic acid bacteria isolated from brewer´s grains on Aspergillus section Flavi growth and aflatoxin B1 production. The Aspergillus strains tested were inhibited by all the lactic acid bacteria strains assayed. The isolates Lactobacillus brevis B20, P. pentosaceus B86, Lactococcus lactis subsp. lactis B87, L. brevis B131 and Lactobacillus sp. B144 completely suppressed the fungal growth and reduced aflatoxin B1 production. In conclusion, lactic bacteria isolated from brewer´s grains show a high inhibitory activity on fungal growth and aflatoxin biosynthesis by Aspergillus flavus and Aspergillus parasiticus. Further studies must be conducted in order to evaluate the success of in vitro assays under food environment conditions and to elucidate the antifungal mechanism of these strains.