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Free radical scavengers from the heartwood of Juniperus chinensis |
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| Authors: | Lim Jong Pil Song Young Cheol Kim Jin Wook Ku Chung Hwan Eun Jae Soon Leem Kang Hyun Kim Dae Keun |
| Institution: | College of Pharmacy, Woosuk University, Samrye, Korea. |
| 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. |
| Keywords: | Juniperus chinensis Antioxidant activity Quercetin Naringenin Taxifolin Aromadendrin Isoquercitrin DPPH radical |
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