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  • Title: Free radical scavengers from the heartwood of Juniperus chinensis.
    Author: Lim JP, Song YC, Kim JW, Ku CH, Eun JS, Leem KH, Kim DK.
    Journal: Arch Pharm Res; 2002 Aug; 25(4):449-52. PubMed ID: 12214854.
    Abstract:
    The antioxidant activity of Juniperus chinensis (Cupressaceae) was determined by measuring the radical scavenging effect on DPPH (1,1-diphenyl-2-picrylhydrazyl). The methanolic extract of J. chinensis heartwood showed the strong antioxidant activity. The antioxidant activity of n-BuOH soluble fraction was stronger than that of the others, and the fraction was subjected to purification by repeated silica gel and Sephadex LH-20 column chromatography. Quercetin, naringenin, taxifolin, aromadendrin and isoquercitrin were isolated from the n-BuOH fraction. Their structures were elucidated by physico-chemical and spectroscopic studies.
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