
Screened from fermented milk wine and deposited in the China Center for TypeCulture Collection (CCTCC), with deposit number CCTCC No: M207107.Lactobacillus casei CN1566 can tolerate an initial hydrogen-peroxide concentratiof 1.2 mmol/L. At a cell concentration of 1010 CFU/mL, the intact cells andcell-free extracts of Lactobacillus casei CN1566 exhibit DPPH free-radicalscavenging rates of 88.2% and 86.6%, respectively.
At a cell concentration of 1010 CFU/mL, the intact cells and cell-free extracts ofLactobacillus casei CN1566 show hydroxyl-radical scavenging rates of 90.6% and92.5%, respectively. Both intact cells and cell-free extracts of Lactobacillus caseiCN1566 achieve an 80% inhibition rate against linoleic acid oxidation.Lactobacillus casei CN1566 possesses superoxide dismutase (SOD) activity of1.20 + 0.26 U/mL and glutathione peroxidase (GSH-Px) activity of
54.94 + 12.54 U/g protein.