Biological degradation of aflatoxin M1 by Bacillus pumilus E-1-1-1.

Abstract:

:Aflatoxin M1 (AFM1 ) is a potent mycotoxin which causes serious health concerns in developing countries, where it is mainly found in milk, meat, and other foods. Biological detoxification is a promising method for eliminating AFM1 . The aim of this work was to search for AFM1 -degrading bacterial strains from animal waste, soil, and activated sludge. High-performance liquid chromatography and Fourier-transform infrared spectroscopy were used to analyze the AFM1 degradation products. A strain designated E-1-1-1 was obtained from African elephants feces, with the degradation ratio of AFM1 reaching 89.55% in 12 hr. Based on morphology, physiological and biochemical tests, and 16S rRNA gene sequence analysis, strain E-1-1-1 was identified as Bacillus pumilus. The culture supernatant of B. pumilus E-1-1-1 degraded AFM1 effectively, whereas the cells and cell extracts of B. pumilus E-1-1-1 were far less effective. Carbon and nitrogen sources had highly significant effects on the degradation of AFM1 by B. pumilus E-1-1-1. The AFM1 -degrading strain, B. pumilus E1-1-1, could have great potential in industrial applications.

journal_name

Microbiologyopen

journal_title

MicrobiologyOpen

authors

Gu X,Sun J,Cui Y,Wang X,Sang Y

doi

10.1002/mbo3.663

subject

Has Abstract

pub_date

2019-03-01 00:00:00

pages

e00663

issue

3

issn

2045-8827

journal_volume

8

pub_type

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