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- W2247646603 abstract "Bark of Larix gmelini was extracted twice with ethanol and the extracts were seperated by column chromatography(CC).The total phenol content and procyanidins content of the extracts and fractions were determined.The experiments on their reducing ability by FeCl3/K3Fe(CN)6 method and antioxidation ability by using 1,1-diphenyl-2-picrylhydrazyl(DPPH) were performed.The result showed that,for the first extract,its yield was 13.68 % and its total phenol content was 58.60 %.The procyanidins accounted for 17.86 % of the total phenol.For the second extract,its yield was 11.91 % and its total phenol content was 29.02 %.The procyanidins accounted for 11.21 % of the total phenol.The ability of reducing Fe3+ of all samples are positively correlated with their total phenol concentration and proanthocyanidins concentration.All samples had good ability of eliminating DPPH radicals.The first extract worked quickly while the second extract did slowly but lasted longer." @default.
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- W2247646603 date "2009-01-01" @default.
- W2247646603 modified "2023-09-23" @default.
- W2247646603 title "Research on antioxidation property of ethanol extracts from bark of Larix gmelini." @default.
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