Journal of Tianjin Agricultural University ›› 2023, Vol. 30 ›› Issue (1): 1-5.doi: 10.19640/j.cnki.jtau.2023.01.001

• Researches and Scientific Notes •     Next Articles

Study on antioxidant and antibacterial activity of polysaccharide extract in Mesembryanthemum crystallinum

Yang Zongfena, Wang Mina, Wang Zhenlia, Wang Haifengb, Wang Junbina,c,Corresponding Author   

  1. Tianjin Agricultural University, a. College of Basic Science, b. Center for Agricultural Analysis and Measurement, c. Chemistry Experiment Teaching Center, Tianjin 300392, China
  • Received:2021-12-20 Online:2023-03-31 Published:2023-04-21

Abstract: In this study, the polysaccharide of Mesembryanthemum crystallinum was extracted and determined by ultrasonic assisted method, and then the antioxidant capacity and antibacterial activity of the polysaccharide extract of Mesembryanthemum crystallinum were determined. The results showed that the polysaccharide content was 11.21%. Effects of polysaccharide extract of Mesembryanthemum crystallinum on hydroxyl radical, 1,1-diphenyl-2-trinitrophenyl hydrazine(DPPH)and nitrite ions had good scavenging effects. However, the total reduction ability of Mesembryanthemum crystallinum polysaccharide extract was weaker than vitamin C. Within a certain addition range, the antioxidant ability of Mesembryanthemum crystallinum polysaccharide extract on animal oil and vegetable oil was positively correlated with the concentration. In addition, Mesembryanthemum crystallinum polysaccharide extract had antibacterial activity against Escherichia coli and Bacillus subtilis. The antibacterial activity against Bacillus subtilis was stronger than that of Escherichia coli. The results of this study showed that Mesembryanthemum crystallinum polysaccharide extract had certain antioxidant and antibacterial activity.

Key words: Mesembryanthemum crystallinum, polysaccharides, antioxidant activity, bacteriostatic activity

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