Study on Bacillus subtilis Strains Q4 and Q10 Inhibiting the Growth of E.coli and Salmonella in vitro

The effects of 2 Bacillus subtilis strains,Q4and Q10inhibiting the growth of E.coli and Salmonella.Regarded E.coli and Salmonellaas indicators,investigated by the co-incubation,pre-incubation and post-incubation method.The results revealed that 2 Bacillus subtilis strains showed different ability to inhibit the growth of E.coli and Salmonellaafter incubating with Q4and Q10,respectively.Having inoculated Bacillus subtilis and then co-incubation pathogens inhibition were most obvious in means of the strongest inhibitory effect at 24h,at the same time,pre-incubation Bacillus subtilis and then co-incubation pathogen the inhibition was the weakest of all,the pathogens and Bacillus subtilis co-incubation were the second.From the former consequences that 2 Bacillus subtilis strains of Q4and Q10had inhibitory effect on the pathogen,but there were differences in inhibition,and related to the duration of Bacillus subtilis and pathogen inoculation.