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- W2347698756 abstract "Objective: To study the chemical constituents from Paeonia anomala and to evaluate their antioxidant activities. Method: The compounds were isolated by chromatography on silicagel,Sephadex LH-20 column and identified on the basis of physicochemical constants and spectral analysis. Their antioxidant activities were evaluated by 1,1-diphenyl-2-pieryl-2-picrylhydrazyl( DPPH) and 2,2-amino-di( 3-ethyl-benzothiazoline sulphonic acid-6) ammonium salt( ABTS) radical scavenging methods. Result: Five compounds were isolated and their structures were identified as ethyl gallate( 1),methyl gallate( 2),oleanic acid( 3),syringate( 4) andβ-sitosterol( 5). The results showed that the DPPH radical scavenging activity of compounds 1 and 2 were lower than the positive control of Vitamin C with IC50values( 35. 13 ± 0. 28),( 44. 64 ± 0. 37) μmol·L- 1. Their ABTS radical scavenging activity were lower than Vitamin C with IC50 values of( 25. 13 ± 0. 68),( 35. 76 ± 1. 48) μmol·L- 1,respectively. Conclusion: Compounds 3,4 are isolated from this plant for the first time. Compounds 1,2have powerful antioxidant activies,and the others have little antioxidant activies." @default.
- W2347698756 created "2016-06-24" @default.
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- W2347698756 date "2015-01-01" @default.
- W2347698756 modified "2023-09-23" @default.
- W2347698756 title "Chemical Constituents and Antioxidant Evaluation of Paeonia anomala" @default.
- W2347698756 hasPublicationYear "2015" @default.
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