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Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (35): 123-126.doi: 10.11924/j.issn.1000-6850.casb20191200967

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Antibacterial and Antioxidant Effects of Ultrasound Extract of Glycyrrhiza uralensis

Li Wenfen(), Sun Ruige, Wang Bo()   

  1. Beijing Normal University, Zhuhai Campus, Guangdong Zhuhai 519085
  • Received:2019-12-19 Revised:2020-02-20 Online:2020-12-15 Published:2020-12-18
  • Contact: Wang Bo E-mail:liwenfenbnu@126.com;wangbozai@163.com

Abstract:

To find a safe food preservative, this study explored the antibacterial and antioxidant effects of Glycyrrhiza ultrasonic extract. Experiments with Escherichia coli and Bacillus subtilis were made to determine the radius of bacteriostatic circle by agar diffusion method. Antioxidant activity (DPPH scavenging ability and anti-O-phenylene three phenol self-oxidation) of each sample were investigated. Under the effect of Glycyrrhiza extract, the inhibition circle radius of E. coli reached 1.01 ± 0.08 cm, and the inhibition circle radius of B. subtilis reached 0.96 ± 0.03 cm after 18 hours of culture. Also, the free radical scavenging ability to DPPH was 93.1%, which was significantly higher than that of the control group (0.1mg/ml vitamin C). The highest anti-O-phenylene three phenol self-oxidation effect was 87.57%. In general, the extract of Glycyrrhiza uralensis has good antibacterial effect on the above two kinds of bacteria, and has certain antioxidant effect on DPPH and O-phenylene three phenol.

Key words: Glycyrrhiza uralensis Fisch, ultrasound extract, antibacterial activity, antioxidant

CLC Number: