文章基本信息

标题：Antioxidant and Antibacterial Activities of Rumex japonicus HOUTT. Aerial Parts
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作者：Abdelnaser Abdelghany Elzaawely ; Tran Dang Xuan ; Shinkichi Tawata 等
期刊名称：Biological and Pharmaceutical Bulletin
印刷版ISSN：0918-6158
电子版ISSN：1347-5215
出版年度：2005
卷号：28
期号：12
页码：2225-2230
DOI：10.1248/bpb.28.2225
出版社：The Pharmaceutical Society of Japan
摘要：We evaluated total phenolic content, antioxidant activity, reducing power and antibacterial activity of ethanol, hexane, chloroform, ethyl acetate and aqueous extracts of aerial parts of Rumex japonicus H OUTT . The ethyl acetate extract had the highest amount of phenolic compounds. It also exhibited the highest reducing power and antioxidant activity when assayed by the 1,1-diphenyl-2-picrylhydrazyl (DPPH), β-carotene bleaching and superoxide radical methods. The ethyl acetate extract possessed the strongest antibacterial activity against Bacillus subtilis , B. cereus and E. coli . GC-MS analysis indicated that ethyl acetate extract contained a variety of phenolic compounds. HPLC analysis showed that pyrogallol was the predominant phenolic compound in this extract. Thus, our study verified that the ethyl acetate extract has strong antioxidant and antibacterial activities which are correlated with its high level of phenolic compounds, particularly pyrogallol and pyrocatechin. This extract of R. japonicus aerial parts can be utilized as an effective and safe source of antioxidants.
关键词：Rumex japonicus;antioxidant activity;antibacterial activity;phenolic compound