Biotechnology Bulletin ›› 2023, Vol. 39 ›› Issue (11): 182-190.doi: 10.13560/j.cnki.biotech.bull.1985.2023-0603

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Advances in the Antioxidant Activities of Lactic Acid Bacteria and Their Applications

ZHAO Jia(), ZHAO Fei-yan, SHEN Xin, GAO Guang-qi, SUN Zhi-hong()   

  1. Inner Mongolia Agricultural University, Key Laboratory of Dairy Biotechnology and Engineering of Ministry of Education, Key Laboratory of Dairy Processing, Ministry of Agriculture, Key Laboratory of Dairy Biotechnology and Engineering of Inner Mongolia, Hohhot 010018
  • Received:2023-06-25 Online:2023-11-26 Published:2023-12-20
  • Contact: SUN Zhi-hong E-mail:zhaojia_0412@163.com;sunzhihong78@163.com

Abstract:

As a natural antioxidant, the antioxidant properties of lactic acid bacteria(LAB)have been one of the hot spots of research. Most of the LAB are anaerobic or partly anaerobic, and are generally suitable to grow in anaerobic environment or low oxygen. Some strains of LAB have good antioxidant properties because they contain highly active antioxidant enzymes and redox systems. As a common fermenting microorganism, LAB are not only useful in food production for improving flavour, but their antioxidant effect is important for extending the shelf life of food. Likewise, oxidative stress in the body is closely related to many physiological and pathological phenomena, and numerous studies have demonstrated the beneficial function of LAB in alleviating related diseases. This paper reviews the oxidative stress of LAB, their response and defence mechanisms, and technical methods and applications to improve the antioxidant activity of LAB, with the aim of providing theoretical references for an in-depth understanding of the antioxidant mechanisms of LAB and the development of strains with fine antioxidant activity.

Key words: lactic acid bacteria, reactive oxygen, oxygen stress defence, antioxidant activity