title: Antioxidant activity of Lactobacillus plantarum strains isolated from traditional Chinese fermented foods.
abstract: Eleven Lactobacillus plantarum strains isolated from traditional Chinese fermented foods were investigated for their in vitro scavenging activity against hydroxyl and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radicals, and their resistance to hydrogen peroxide. L. plantarum C88 at a dose of 10(10) CFU/ml showed the highest hydroxyl radical and DPPH scavenging activities, with inhibition rates of 44.31% and 53.05%, respectively. Resistance of intact cells to hydrogen peroxide was also found in all strains. L. plantarum C88 was the most resistant strain against hydrogen peroxide. When L. plantarum C88 was administered to senescent mice suffering oxidative stress induced by d-galactose, the serum superoxide dismutase activity, the glutathione peroxidase activity and the total antioxidant capacity in liver increased significantly, while the level of malondialdehyde in liver decreased significantly. L. plantarum C88 isolated from traditional Chinese fermented dairy tofu could be considered as a potential antioxidant to be applied in functional foods.
authors.affiliation: Center of Agro-Food Technology, Northeast Agricultural Research Center of China, Changchun 130033, PR China.
authors.forename: Shengyu
authors.initials: S
authors.lastname: Li
authors.forename: Yujuan
authors.initials: Y
authors.lastname: Zhao
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Xue
authors.initials: X
authors.lastname: Zhang
authors.forename: Li
authors.initials: L
authors.lastname: Huang
authors.forename: Da
authors.initials: D
authors.lastname: Li
authors.forename: Chunhua
authors.initials: C
authors.lastname: Niu
authors.forename: Zhennai
authors.initials: Z
authors.lastname: Yang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wang
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000737:chemistry* / Q000378:metabolism; D005285:Fermentation; D006801:Humans; D006861:Hydrogen Peroxide / Q000494:pharmacology; D017665:Hydroxyl Radical / Q000737:chemistry; D048191:Lactiplantibacillus plantarum / Q000737:chemistry* / Q000187:drug effects / Q000302:isolation & purification / Q000378:metabolism; D008297:Male; D051379:Mice; D018384:Oxidative Stress; D019936:Probiotics / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism; D045730:Soy Foods / Q000032:analysis / Q000382:microbiology*
chemical_list: D000975:Antioxidants; D017665:Hydroxyl Radical; D006861:Hydrogen Peroxide