Abstract:In this study，a Pediococcus pentosaceus M52 strain was isolated and identified from a fermented sauerkraut food，and its cultivation conditions，physicochemical characteristics，safety，and probiotic properties were studied. The results showed that the strain could inhibit the growth of foodborne pathogenic bacteria such as Staphylococcus aureus，Escherichia coli，and Tubercle bacillus and showed strong tolerance. When it was artificially inoculated into the sauerkraut fermentation system，the physicochemical indexes were better than those of naturally fermented sauerkraut，and the nitrite content was significantly reduced；the glucose utilization rate was accelerated. Pediococcus pentosaceus M52 had potential application and development value in the fermentation of vegetables，which can improve the safety of fermented vegetable food.