Comparative Studies on Antioxidant Activities of Different Lactic Acid Bacterial Strains

doi:10.7506/spkx1002-6630-201009044

FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (9): 197-201.doi: 10.7506/spkx1002-6630-201009044

• Bioengineering • Previous Articles Next Articles

Comparative Studies on Antioxidant Activities of Different Lactic Acid Bacterial Strains

WANG Xi1，LUO Xia2，XU Xiao-yan2，YU Meng-yao2，YU Chun-lian3，JIANG Nan2，ZENG Jin2，YANG Zhi-rong1,*

1. Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Science, Sichuan University,
Chengdu 610065, China；2. Sichuan Province Chinese Medicine Institute, Chengdu 610041, China；3. Sichuan Academy of
Agricultural Sciences, Chengdu 610066, China

Received:2009-08-10 Online:2010-05-01 Published:2010-12-29
Contact: YANG Zhi-rong E-mail:bioyang@163.com

Abstract

Abstract:

Objective: In order to provide theoretical evidences for developing novel natural antioxidants, antioxidant activities of different lactic acid bacterial strains were compared in this paper. Methods: The antioxidant capabilities and reducing activities of 35 lactic acid bacterial strains from intact cells, cell-free extracts and extracellular secretions were evaluated through scavenging capabilities of hydroxyl, superoxide anion and DPPH free radicals. Results: La 5 and La 29 displayed the excellent antioxidant activity among 35 lactic acid bacterial strains. Conclusion: Different fractions from lactic acid bacteria have different scavenging capabilities in vitro. Therefore, lactic acid bacteria from difference resources, concentrations and excretion places also exhibited different antioxidant activities.

Key words: actic acid bacteria, antioxidant activity, free radicals, reducing activity

CLC Number:

Q949.91

WANG Xi1，LUO Xia2，XU Xiao-yan2，YU Meng-yao2，YU Chun-lian3，JIANG Nan2，ZENG Jin2，YANG Zhi-rong1,*. Comparative Studies on Antioxidant Activities of Different Lactic Acid Bacterial Strains[J]. FOOD SCIENCE, 2010, 31(9): 197-201.

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Comparative Studies on Antioxidant Activities of Different Lactic Acid Bacterial Strains

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