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자료유형
학술저널
저자정보
Baek, Yoon-Su (Division of Floriculture Research, National Institute of Horticultural and Herbal Science, RDA) Song, Na-Young (Department of Oriental Medicine Biotechnology, Graduate School of Biotechnology, Kyung Hee University) Nam, Tae-Gyu (Department of Food Science and Biotechnology, Graduate School of Biotechnology, Kyung Hee University) Kim, Dae-Ok (Department of Food Science and Biotechnology, Graduate School of Biotechnology, Kyung Hee University) Kang, Hee-Cheol (GFC Co., Ltd.) Kwon, Oh-Keun (Division of Floriculture Research, National Institute of Horticultural and Herbal Science, RDA) Baek, Nam-In (Department of Oriental Medicine Biotechnology, Graduate School of Biotechnology, Kyung Hee University)
저널정보
한국응용생명화학회 Applied Biological Chemistry Applied Biological Chemistry 제58권 제6호
발행연도
2015.1
수록면
787 - 793 (7page)

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The calyx of Fragaria ananassa (Rosaceae) has not been investigated for its chemical constituents and biological activity. This study focused on the isolation of active metabolites from the calyx of this plant. Compounds from F. ananassa calyx were extracted in 80 % aqueous MeOH and the concentrated extract was successively partitioned into EtOAc, n-BuOH, and $H_2O$ fractions. Repeated silica gel, octadecyl silica gel, and Sephadex LH-20 column chromatographies afforded six purified flavonoids. On the basis of spectroscopic methods, including $^1H$, $^{13}C$ nuclear magnetic resonance spectrometry (NMR), DEPT, and 2D NMR (gCOSY, gHSQC, gHMBC), the flavonoids were identified as kaempferol (1), astragalin (2), quercetin (3), isoquercitrin (4), sexangularetin (5), and sinensin (6). All the flavonoids were isolated for the first time from the F. ananassa calyx in this study. The flavonoids were evaluated for radical-scavenging capacity 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonic acid ammonium salt), 2,2-diphenyl-1-picrylhydrazyl, and oxygen radical absorbance capacity methods. In conclusion, quercetin (3) consistently showed the highest ABTS, DPPH, and ORAC radical-scavenging activities compared with the other isolated flavonoids.

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