All strains were obtained from Food Safety and Microbiology Laboratory, Shanghai Jiao Tong University, China. Before use, the bacterial strains were incubated at 37 ◦C for 12 h for activation of the microorganism.
All strains were obtained from Food Safetyand Microbiology Laboratory, Shanghai Jiao Tong University, China.Before use, the bacterial strains were incubated at 37 ◦C for 12 h foractivation of the microorganism.