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- 주제어 : Ultrasonification ethanolic extract (검색결과 1 건)
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구자익 ( Ja Ik Ku ),공미란 ( Mi Ran Kong ),이양숙 ( Yang Suk Lee ) 대한미용학회(구 대한미용과학회) 2015 대한미용학회지 Vol.11 No.2
The anti-aging and antioxidative activity of 80% ethanolic extracts from Portulaca oleracea, as well as any useful matter content, assessed using ultrasonification extraction methods (UE40; 40.C, UE60; 60.C) were investigated. The soluble protein, flavonoid, and polyphenol compound contents of UE40 were 165.49 mg/g, 34.24 mg/g, and 43.73 mg/g, respectively. Additionally the reducing sugar contents were higher in UE60 (292.38 mg/g). The elastase and collagenase inhibition rates at a concentration of 2.0 mg/mL were both approximately 50% in UE40, and were 42.36% and 18.95%, respectively, in UE 60. The tyrosinase inhibition activities of UE40 and UE60 did not differ significantly. The xanthine oxidase inhibition rates were in the following order: ascorbic acid (64.10%)>UE40 (53.33%)>UE60 (43.63%) at a concentration 2.0 mg/mL. However, UE40 and the control (ascorbic acid) did not differ significantly at a concentration under 1.0 mg/mL. Regarding 1,1-diphenyl-2-picrylhydrazyl radical scavenging ability, UE40 demonstrated a higher level than ascorbic acid. Both the superoxide dismutase-like activity and nitrite scavenging ability of UE60 were higher than those observed for UE40. These results suggested that the ultrasonification ethanolic extract from P. oleracea may be considered as a potential resource for the development of functional cosmetic materials.
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