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- W867215585 abstract "Antimicrobial and antioxidative activites on heartwood extractives of domestic species were investigated to develop a natural fungicide or preservative. One steroid, stilbene derivatives and two flavonoids were isolated from heartwood of Robinia pseudo-acacia which has been selected due to its high antioxidative activity among the tested species. The structures were determinded as: 3--stigmast-5en-3-ol(daucosterol), 3,3;4,5-tetrahydroxystilbene, 3,3;4;5,7-pentahydroxyflavone(robinetin) and 3,3;4;7-tetrahydroxyflavanone (fustin) respectively on the basis of spectroscopic data and chemical correlations. According to the results of free radical scavenging activity, 3,3;4;5,7-pentahydroxyflavone was evaluated as the highest antioxidative compound among the four compounds and showed higher radical scavenging activity than those of a-tocopherol and butylated hydroxytoluene(BHT), one of the strongest synthetic antioxidants. 3,3;4;5-Tetrahydroxystilbene and 3,3;4;7-tetrahydroxyflavanone showed higher antioxidative activities than that of a -tocopherol, However, 3- -stigmast-5en-3-ol did not show free radical scavenging activity. In this regard, it could inferred that high antioxidative activity of extractives of R. pseudo-acacia was derived from 3,3;4;5;7-pentahydroxyflavone, 3,3;4;5-tetrahydroxystilbene and 3,3;4;7-tetrahydroxyflavanone, antioxidative activity" @default.
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- W867215585 date "2002-01-01" @default.
- W867215585 modified "2023-09-23" @default.
- W867215585 title "Studies on Biological Activity of Wood Extractives(IX) -Antionxidative Compounds from Heartwood of Robinia pseudo-acacia-" @default.
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