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논문 기본 정보

자료유형
학술저널
저자정보
Choi, Chun-Whan (Faculty of Food Science and Biotechnology, Pukyong National University) Jung, Hyun-Ah (Faculty of Food Science and Biotechnology, Pukyong National University) Kang, Sam-Sik (Natural Products Research Institute, Seoul National University) Choi, Jae-Sue (Faculty of Food Science and Biotechnology, Pukyong National University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제30권 제1호
발행연도
2007.1
수록면
1 - 7 (7page)

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초록· 키워드

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As a component of our continuing investigations into herb-derived antioxidant agents, we have evaluated the antioxidant effects of Flos Lonicerae (Lonicera japonica flowers), via 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical, total reactive oxygen species (ROS), hydroxyl radical (OH), and peroxynitrite $(ONOO^-)$ assays. Among the methanolic extract and the dichloromethane, ethyl acetate, n-butanol, and water fractions, the EtOAc fraction of Flos Lonicerae exhibited marked scavenging/inhibitory activities, as follows: $IC_{50}$ values of 4.37, $27.58{\pm}0.71,\;0.47{\pm}0.05,\;and\;12.13{\pm}0.79{\mu}g/mL$ in the DPPH, total ROS, $ONOO^-$, and OH assays, respectively. Via a bioactivity-guided fractionation approach, a new triterpenoid glycoside, oleanolic acid $28-O-{\alpha}-L-rhamnopyranosyl-(1{\rightarrow}2)-[{\beta}-D-xylopyranosyl(1{\rightarrow}6)]-{\beta}-D-glucopyranosylester$ (12), along with eleven known compounds, including chrysoeriol(1), luteolin (2), 5-hydroxymethyl-2-furfural (3), caffeic acid (4), protocatechuic acid (5), chrysoeriol $7-O-{\beta}-D-glucopyranoside$ (6), isorhamnetin $3-O-{\beta}-D-glucopyranoside$ (7), kaempferol $3-O-{\beta}-D-glucopyranoside$ (8), quercetin $3-O-{\beta}-D-glucopyranoside$ (9), hederagenin $3-O-{\alpha}-L-arabinopyranoside$ (10), and luteolin $7-O-{\beta}-D-glucopyranoside$ (11), were isolated from the EtOAc fraction. The structures of isolated compounds 1-12 were elucidated via spectroscopic analyses. Compound 12 was isolated from a natural source for the first time. Compounds 2, 4, 5, 7, 9, and 11 evidenced marked scavenging activities, with $IC_{50}$ values of $2.08-11.76{\mu}M$ for DPPH radicals, and $1.47-6.98{\mu}M\;for\;ONOO^-$.

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