In vitro antioxidant activity of ten strains of lactobacillus with sequestering lead ions

In order to select strains of high adsorption of lead ions strains and has antioxidant capacity,the 10 strains of lactobacillus of lead ions adsorption experiment were conducted in this experiment,and the antioxidant capabilities of 10 strains of lactic acid bacteria in vitro were evaluated through reducing radical activity assay,scavenging DPPH free radicals,scavenging hydroxyl free radical and inhibiting linoleic acid peroxidation.The ability to remove lead ions between different Lactobacillus different,not the same antioxidant capacity.The results showed that KLDS 1.0207 had the capacity of sequestering lead ions was 79.18%,reducing power up to 99.00 μmol / L cysteine equivalents. Scavenging action level of DPPH and hydroxyl free radicals were 50.40%,26.88%respectively.In liposome system,anti- lipid peroxidation resistance only reached 15.62%.This strain can be used to alleviate the oxidative damage in the body caused by lead poisoning.