Aflatoxin detoxification potential of lactic acid bacteria isolated from Iranian poultry

Document Type: Short paper

Authors

1 Department of Poultry Sciences, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran

2 Department of Clinical Biochemistry, Faculty of Medicine, Tarbiat Modares University, Tehran, Iran

Abstract

This study was carried out to examine aflatoxin B1 (AFB1) removal ability of four strains of lactic acid
bacteria (LAB). Three indigenous (Lactobacillus rhamnosus TMU094, Lactobacillus fermentum TMU121
and Pedioccus pentosaceus TMU457) and a non-indigenous (Labacillus rhamnosus PTCC1637) isolates
were studied. The strains were incubated with (AFB1) at different time. The toxin residual in the supernatant
was determined. Reduction of the toxin quantity was observed by all species. Binding of aflatoxin by the
studied LAB varied from 19.41 to 75.06%. Aflatoxin-binding activity showed time dependent trend taking
into consideration of different incubation periods. Lactobacillus rhamnosus TMU094 bound 25.64 to
75.06%, L. fermentum bound 38.63 to 72.15%, P. pentosaceus bound 24.86 to 63.21% and L. rhamnosus
PTCC1637 bound 19.41 to 35% of AFB1 during the studied course of incubation times. These results showed
that indigenous strains of LAB are able to bind AFB1 effectively

Keywords