Aflatoxin detoxification potential of lactic acid bacteria isolated from Iranian poultry

Abstract

This study was carried out to examine aflatoxin B1 (AFB1) removal ability of four strains of lactic acidbacteria (LAB). Three indigenous (Lactobacillus rhamnosus TMU094, Lactobacillus fermentum TMU121and Pedioccus pentosaceus TMU457) and a non-indigenous (Labacillus rhamnosus PTCC1637) isolateswere studied. The strains were incubated with (AFB1) at different time. The toxin residual in the supernatantwas determined. Reduction of the toxin quantity was observed by all species. Binding of aflatoxin by thestudied LAB varied from 19.41 to 75.06%. Aflatoxin-binding activity showed time dependent trend takinginto consideration of different incubation periods. Lactobacillus rhamnosus TMU094 bound 25.64 to75.06%, L. fermentum bound 38.63 to 72.15%, P. pentosaceus bound 24.86 to 63.21% and L. rhamnosusPTCC1637 bound 19.41 to 35% of AFB1 during the studied course of incubation times. These results showedthat indigenous strains of LAB are able to bind AFB1 effectively