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中国农学通报 ›› 2020, Vol. 36 ›› Issue (35): 123-126.doi: 10.11924/j.issn.1000-6850.casb20191200967

• 食品·营养·检测·安全 • 上一篇    下一篇

甘草超声提取液抑菌和抗氧化效果研究

李文芬(), 孙睿格, 汪波()   

  1. 北京师范大学珠海分校,广东珠海 519085
  • 收稿日期:2019-12-19 修回日期:2020-02-20 出版日期:2020-12-15 发布日期:2020-12-18
  • 通讯作者: 汪波
  • 作者简介:李文芬,女,1983年出生,山西运城人,讲师,硕士,研究方向:食品营养、食品安全。通信地址:519085 广东省珠海市唐家湾镇金凤路18号 北京师范大学珠海分校工程技术学院,E-mail: liwenfenbnu@126.com
  • 基金资助:
    广东省普通高校青年创新人才项目“可食性涂膜保鲜剂开发”(2018KQNCX320);北京师范大学珠海分校校级科研项目“北京师范大学珠海分校科研能力促进计划”(201850003)

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

摘要:

为探究甘草超声提取液的抑菌和抗氧化效果,寻找安全的食品保鲜剂,本实验以大肠杆菌和枯草芽孢杆菌为受试菌株,采用琼脂扩散法测定抑菌圈半径,探究甘草超声提取液抑菌活性;测定1,1-二苯基-2-三硝基苯肼(DPPH)的自由基清除能力、抗邻苯三酚的自氧化效果,检测甘草超声提取液抗氧化能力。结果表明,甘草提取液对大肠杆菌、枯草芽孢杆菌的抑菌圈半径在培养18 h后分别可以达到1.01±0.08 cm、0.96±0.03 cm;对DPPH的自由基清除能力可达到93.1%,显著高于对照组(0.1 mg/mL维生素C);抗邻苯三酚的自氧化效果最高可达到87.57%。甘草提取物对以上两种受试菌具有良好的抑菌作用,对DPPH与邻苯三酚也有一定的抗氧化效果。

关键词: 甘草, 超声提取, 抑菌, 抗氧化

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

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