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2018-3 쇠비름 물, 에탄올 추출물의 항산화 및 항염증 활성
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2018-3(105) 쇠비름 물, 에탄올 추출물의 항산화 및 항염증 활성.pdf (2Mb) (21)
Portulaca oleracea L., a species of Portulacaceae, is ubiquitous. It is a well-known traditional Chinese medicine for removing heat, counteracting toxicity, cooling blood, and maintaining hemostasia; it is also used as antidysentery agent. This study investigated the anti-oxidative and anti-inflammatory activities of water and ethanol extracts from P. oleracea. The total polyphenol content (21.08±0.03 mg GAE/g) and total flavonoid content (5.45±0.76 mg QE/g) of the ethanolic extracts were higher than those of the water extracts. The antioxidative activities were determined by evaluating the 1,1-diphenyl-2-picrylhydrazyl (DPPH) and the 2,2'-azinobis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging activity and by the ferric reducingantioxidant potential (FRAP) assay. The ABTS radical scavenging activity of the water extract (75.53%) was higher in those of the water extract (67.03%) at concentration of 1,000 g/mL. The DPPH radical scavenging activity and FRAP of the ethanol extract were higher than those μ of the water extract. We also investigated the anti-inflammatory activity of the P. oleracea extracts in LPS-stimulated Raw 264.7 cells. The production levels of nitric oxide (NO) andreactive oxygen species (ROS) significantly decreased with an increasing concentration of the extract. The expression levels of pro-inflammatory cytokines (tumor necrosis faction (TNF)- , interleukin (IL)-1 , and IL-6) were significantly lower in the ethanol extract than in the LPS α β alone treatment group. Based on these results, ethanolic extract from P. oleracea could be an effective antioxidant and anti-inflammatory agent.
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