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Antioxidant and antibacterial activity of six edible wild plants (Sonchus spp.) in China

Authors Xia, Dao-Zong; Yu, Xin-Fen; Zhu, Zhuo-Ying; Zou, Zhuang-Dan

Journal NATURAL PRODUCT RESEARCH , 2011,20:25

DOI 10.1080/14786419.2010.534093 PubMed 21793765

Abstract The total phenolic and flavonoid, antioxidant and antibacterial activities of six Sonchus wild vegetables (Sonchus oleraceus L., Sonchus arvensis L., Sonchus asper (L.) Hill., Sonchus uliginosus M. B., Sonchus brachyotus DC. and Sonchus lingianus Shih) in China were investigated. The results revealed that S. arvensis extract and S. oleraceus extract contained the highest amount of phenolic and flavonoid, respectively. Among the methanol extracts of six Sonchus species, S. arvensis extract exhibited the highest radical (DPPH and ABTS(+)) scavenging power and lipid peroxidation inhibitory power. It also exhibited the highest reducing power at 500 mu gmL(-1) by A(700) = 0.80. The results of antibacterial test indicated that the S. oleraceus extract showed higher activity than the other five Sonchus wild vegetables extracts, both in Gram-negative bacteria (Escherichia coli, Salmonella enterica and Vibrio parahaemolyticus) and in a Gram-positive bacterium (Staphylococcus aureus). These results indicate that Sonchus wild food plants might be applicable in natural medicine and healthy food.

Species covered 苦苣菜 Sonchus oleraceus 苣荬菜 Sonchus arvensis 长裂苦苣菜 Sonchus brachyotus 花叶滇苦菜 Sonchus asper