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논문 기본 정보

자료유형
학술저널
저자정보
Jeong-Yong Cho (Chonnam National University) Soo-Hyun Ji (Chonnam National University) Jae-Hak Moon (Chonnam National University) Kye-Han Lee (Chonnam National University) Kyung-Hee Jung (Jeonnam Biotechnology Research Center) Keun-Hyung Park (Chonnam National University)
저널정보
한국식품과학회 Food Science and Biotechnology Food Science and Biotechnology vol 17. no 5
발행연도
2008.10
수록면
1,060 - 1,065 (6page)

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초록· 키워드

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A novel benzoyl glucoside (4) and 13 known phenolic compounds were isolated from the leaves of Camellia japonica by a guided 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay. The structure of 4 was determined to be 4-hydroxy-2-methoxyphenol 1-O-β-D-(6"-O-p-hydroxylbenzoyl)-glucopyranoside (camelliadiphenoside). The 13 known compounds were identified as (E)-coniferyl alcohol (1), (-)-epicatechin (2), 4-hydroxyphenol 1-O-β-D-(6-O-p-hydroxybenzoyl) glucopyranoside (3), naringenin 7-O-β-D-glucopyranoside (5), quercetin 3-O-β-L-rhamnopyranosyl(1→6)-β-D-glucopyranoside (6), kaempferol 3-O-β-L-rhamnopyranosyl(1→6)-β-D-glucopyranoside (7), (+)-catechin (8), 1,6-di-O-p-hydroxybenzoyl-β-D-glucopyranoside (9), phloretin 2"-O-β-D-glucopyranoside (10), quercetin 3-O-β-D-glucopyranoside (11), quercetin 3-O-β-D-galactopyranoside (12), kaempferol 3-O-β-D-galactopyranoside (13), and kaempferol 3-O-β-D-glucopyranoside (14). Their chemical structures were determined by the spectroscopic data of fast atom bondardment mass spectrometry (FABMS) and nuclear magnetic resonance (NMR). Flavonoids having the catechol moiety showed significantly higher DPPH radical scavenging activity than other isolated compounds having monohydroxy phenyl group.

목차

Abstract
Introduction
Material and Methods
Results and Discussion
Acknowledgments
References

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