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      Antioxidant activity in vitro of the selenium-contained protein from the Se-enriched Bifidobacterium animalis 01.

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      Anaerobe

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          Abstract

          Several studies indicated that bifidobacteria possessed strong antioxidant activity. In present study, the antioxidant activities of Bifidobacterium animalis 01 proteins were evaluated using six assays, namely, linoleic acid preoxidation assay, erythrocyte hemolysis assay, 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay, reducing power assay, hydroxyl (.OH) and superoxide radicals (.O(2)(-)) assays, in which the last two assays were measured by electron spin resonance (ESR). There were two kinds of B. animalis 01 proteins in this study, the regular B. animalis 01 protein (Pro-CK) and the B. animalis 01 selenium-contained protein (Pro-Se). Both Pro-CK and Pro-Se showed concentration dependent antioxidant activity in DPPH assay, reducing power assay and erythrocyte hemolysis assay. All results of six assays indicated that the antioxidant activity of the B. animalis 01 protein was improved remarkably after selenium was incorporated. The antioxidant activity of Pro-Se increased with the increase of selenium content in Pro-Se suggesting selenium played a positive role in enhancing the antioxidant activity of B. animalis 01 protein. Moreover, organic selenium was more effective than inorganic selenium on enhancing the hydroxyl radical scavenging ability of B. animalis 01 protein.

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          Author and article information

          Journal
          Anaerobe
          Anaerobe
          1095-8274
          1075-9964
          Aug 2010
          : 16
          : 4
          Affiliations
          [1 ] College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Qinghua Dong East Road, Haidian, Beijing, China.
          Article
          S1075-9964(10)00099-5
          10.1016/j.anaerobe.2010.06.006
          20601030
          d979f603-0b7c-4b6f-9be6-218654f4e1d5
          Copyright (c) 2010 Elsevier Ltd. All rights reserved.
          History

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