Study on the enrichment of intestinal probiotics to three heavy metal ions under simulated intestinal environment

In this paper, the absorption characteristics of Lactobacillus acidophilus, Streptococcus thermophilus and Bifidobacterium to Cr6 +、Cd2 +、Pb2 +under the simulated intestine environment were studied. The results indicated the Lactobacillus acidophilus had strong adsorption and enrichment to Cr6 +, and the adsorption ratio was 70% and the adsorption amount was 0.0021 mg / g.Streptococcus thermophilus also had strong adsorption and enrichment to Cr6 +and Cd2 +, and the adsorption ratio was 50% and 62%, and the adsorption amount was 0.0015 mg /g and0.1057 mg / g, respectively.Bifidobacterium also had strong adsorption and enrichment to Cr6 +and Cd2 +, and the adsorption ratio was 66.6% and 69.9%, and the adsorption amount was 0.0019 mg / g and 0.1298 mg / g, respectively.There was no obvious adsorption of Pb2 +among the three kinds of intestinal probitics under simulated intestinal environment.