食品科学 ›› 2010, Vol. 31 ›› Issue (13 ): 154-157.doi: 10.7506/spkx1002-6630-201013036

• 基础研究 • 上一篇    下一篇

绞股蓝中木脂素体外抗氧化及抑菌活性研究

王晓闻1,章华平2,陈 峰2,王 茜3,温伟业4   

  1. 1.山西农业大学食品科学与工程学院 2.克莱姆森大学食品与营养系 3.克莱姆森大学遗传与生物化学系 4.山西农业大学动物科技学院
  • 收稿日期:2010-06-25 出版日期:2010-07-01 发布日期:2010-12-29
  • 基金资助:

    山西省回国留学人员科研项目(2009040)

in vitro Antioxidant and Anti-microbial Activities of Lignan Compounds from Gynostemma pentaphyllum

WANG Xiao-wen1 ZHANG Hua-ping2 CHEN Feng2 WANG Xi3 WEN Wei-ye4   

  1. 1. Food Science and Engineering College, Shanxi Agricultural University, Taigu 030801, China
    2. Department of Food Science and Human Nutrition, Clemson University, Clemson South Carolina 29634, USA
    3. Department of Genetics and Biochemistry, Clemson University, Clemson South Carolina 29634, USA
    4. College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
  • Received:2010-06-25 Online:2010-07-01 Published:2010-12-29

摘要:

干燥绞股蓝粉碎后用乙醇反复浸泡,合并浸泡液减压浓缩后多次反复用正相硅胶柱层析、反相硅胶(ODS-AQ)柱层析和凝胶LH-20柱层析进行分离,得3个纯化合物Ⅰ、Ⅱ、Ⅲ并对其体外抗氧化和抑菌作用进行研究。结果表明:结构鉴定表明3个化合物均为木脂素类物质。化合物Ⅲ对DPPH自由基有较强清除作用,化合物Ⅰ的清除能力较弱,而化合物Ⅱ在实验浓度范围内没有显示出清除DPPH自由基作用;3种化合物对金属的螯合能力都比较弱;化合物Ⅱ对变异链球菌有一定的抑制作用,对金黄色葡萄球菌有较强的抑制作用,而对大肠杆菌和沙门氏菌显示较弱的抑制作用;化合物Ⅲ对金黄色葡萄球菌、大肠杆菌和沙门氏菌仅显示出微弱的抑制作用,化合物Ⅰ也显示出与化合物Ⅲ相似的抑菌趋势,但作用更弱。

关键词: 绞股蓝, 木脂素, 抗氧化, 抑菌

Abstract:

Chemical investigations of the EtOH extract of Gynostemma pentaphyllum (Cucurbitaceae) led to the isolation of 3 lignans, named compounds Ⅰ, Ⅱ and Ⅲ. Compound Ⅲ showed stronger DPPH free radical scavenging activity when compared to BHT at the same concentrations, while compound Ⅰ had only very little DPPH free radical scavenging activity and compound Ⅱ failed to scavenge DPPH free radicals within the experimental concentration range. All the compounds had a weaker ability to chelate Fe2+ when compared to EDTA. Compound Ⅱ inhibited Streptococcus mutans to a certain extent and strongly inhibited Staphylococcus aureus, while had very little inhibitory effect against Salmonella enteritidis and Escherichia coli; also, compound Ⅲ could weakly inhibit Staphylococcus aureus, Salmonella enteritidis and Escherichia coli; and compound Ⅰ had the same but weaker antimicrobial spectrum as that of compound Ⅲ.

Key words: Gynostemma pentaphyllum, liganins, antioxidant activity, anti-microbial activity

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