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Degradation of AFB1 by untreated, heat-treated, proteinase K-treated, SDS-treated, SDS plus proteinase K-treated cell-free supernatant of B. velezensis DY3108. heat1: boiled for 30 min; heat2: autoclaved for 30 min. Different letters indicate significant differences among them according to Tukey’s LSD test (p < 0.05).
