AFB1 Bio-Degradation by a New Strain - Stenotrophomonas. sp

Abstract The paper was to find the bacteria to degrade aflatoxin B1 (AFB1) and realize the application of biological degradation on AFB1. Using cumarin as the carbon source and energy on the first screening, then the ten strains which were first screened out were taken to degrade AFB1 100 μg kg −1 . Strain NMO-3 was screened out of ten strains, the degradation ratio of AFB1 reached 85.7%, which was more prominent than the others ( P Stenotrophomonas sp. Using cumarin as the carbon source and energy could screen out the AFB1 degradation strains. Acute toxicity tests show that the viable number of NMO-3 lower than 3.12 × 10 10 cfu mL −1 is safety. The crude enzyme was obtained by 65% ammonium sulfate fractionation, and it could degrade AFB1. It is the first report for the strain's detoxi-AFB1.