• Title/Summary/Keyword: flavonoid glycoside

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Antioxidative Properties of Ginseng Leaf Flavonoids on Cellular Membranes

  • Park, Soo-Nam;San
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.16 no.1
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    • pp.1-17
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    • 1990
  • The major flavonoid component of Ginseng leaf is trifolin, a glycoside of kaempferol. To evaluate the antioxidative properties of trifolin and kaempferol on cellular membranes, we compared them with the other flavonoids through the 102-Induced photohemolysis of rabbit erythrocytes. All the flavonoid aglycones including kaempferol, quercetin and baicalein protected effectively the cells from the 102-caused damage in a dose- dependent manner, by scavenging 102 and free radicals in the cellular membranes. The solubilization of the flavonoid aglycones into micelles or erythrocyte membranes was deduced from spectro-photometric and microscopic observations. The flavonoid glycosides were not protective or less protective than their corresponding aglycones, and trifolin was the only glycoside that exhibited a solubilization into the membranes and a significant protection against the photohemolysis. We also tested some phenolic compounds contained in Ginseng, and found that they did not prevent the photohemolysis so effectively as kaempferol or trifolin.

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Flavonoid chemistry of Fallopia sect. Reynoutria (Polygonaceae) in Korea (한국산 닭의덩굴속 호장근절(마디풀과)의 화학분류학적 연구)

  • Park, Jin Hee;Moon, Hye-Kyoung;Park, Chong-Wook
    • Korean Journal of Plant Taxonomy
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    • v.41 no.1
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    • pp.10-15
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    • 2011
  • Fifteen populations comprising three taxa and a putative hybrid of Fallopia sect. Reynoutria in Korea were examined for their leaf flavonoid constituents. Nineteen flavonoid compounds were isolated and identified; they were glycosylated derivatives of the flavonols quercetin and kaempferol, and of the flavones apigenin and luteolin. Among them, quercetin 3-O-galactoside and quercetin 3-O-glucoside were major flavonoid constituents, and present in all taxa. The flavonoid data appear to be very useful for taxon delimitation, and all taxa examined are readily distinguished by their flavonoid profiles. In addition, the flavonoid data suggest that the Nonsan population may be of hybrid origin involving F. japonica var. japonica, F. forbesii, and F. sachalinensis. In F. japonica var. japonica, there is no apparent correlation between their levels of polyploidy and flavonoid chemistry, but geographical variation of the flavonoid profiles among some populations was detected.

Studies on Flavonoid Glycoside of the leaves of Viola diamantica (금강제비꽃 잎의 Flavonoid 배당체(II))

  • Yook, Chang-Soo;Lee, Woo-Tchul;Moon, Chang-Kiu
    • YAKHAK HOEJI
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    • v.33 no.2
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    • pp.124-128
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    • 1989
  • The drug consists of the dried entire plant of Viola diamantica (family Violaceae). It is used for the treatment of acute pyogenic diseases such as boil and carbuncles; also as tumor, high fever, tuberculosis and astringent hemostatic. Two flavonol glycosides have been isolated from the aerial parts of Viola diamantica and could be identifed as kaempferol 7-rhamnoside and kaempferol 3,7-dirhamnoside (bright yellow needle crystal, mp $225^{\circ}$, $C_{27}\;H_{30}\;O_4\;4H_2O$). Kaempferol 7-rhamnoside and kaempferol 3,7-dirhamnoside were first isolated from Viola diamantica.

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Flavanone Glycoside from the Fruits of Chaenomeles sinensis

  • Kim, Ho-Kyoung;Jeon, Won-Kyung;Ko, Byoung-Seob
    • Natural Product Sciences
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    • v.6 no.2
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    • pp.79-81
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    • 2000
  • Investigation of the fruits of Chaenomeles sinensis (Rosaceae) resulted in the isolation of a minor flavonoid. The structure of flavanone glycoside was determined to be as $2-hydroxynaringenin-7-O-{\beta}-glucoside$ on the basis of FAB-MS and spectral evidence, especially by 2D-NMR $(^1H-^1H\;COSY,\;HMQC,\;HMBC\;and\;NOESY)$.

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Biological Active Components of Fruits of Poncirus trifoliata (지실의 생리활성성분)

  • Youn, Whang-Geum;Kim, Dong-Hyun;Kim, Nam-Jae;Hong, Nam-Doo
    • YAKHAK HOEJI
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    • v.36 no.6
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    • pp.548-555
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    • 1992
  • The biological activities of fruits of Poncirus trifoliata have been studied. 70% Ethanol extract of Ponciri Fructus was fractionated with ether, ethyl acetate and n-butanol by turns. The ether fraction showed antibacterial activity on Staphylococcus aureus and inhibited the contractability of the isolated mice ileum. The ethyl acetate and n-butanol fractions showed the anti-edematous effect on the carrageenin-induced edema of rat hindpaw. From the n-butanol fraction, one of the flavonoid glycoside was isolated and identified as poncirin. Ponciri Fructus contained about 6% poncirin which was 5,7-dihydroxy-4´-methoxy flavanone rhamnoglucoside and poncirin showed antiinflammatory activities. Poncirin was considered as the major effective component of Ponciri Fructus.

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Flavonoid Glycosides from Melandrium firmum

  • Woo, Eun-Hee;Woo, Won-Sick
    • Archives of Pharmacal Research
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    • v.12 no.3
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    • pp.223-225
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    • 1989
  • Linarin and schaftoside were isolated from Melandrium firmum (Caryophyllaceae) and characterized by spectral data.

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Flavonoids from Leaves and Exocarps of the Grape Kyoho

  • Park, Hye-Jeong;Cha, Hyeon-Cheol
    • Animal cells and systems
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    • v.7 no.4
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    • pp.327-330
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    • 2003
  • We analyzed and compared profiles of flavonols extracted from leaves and exocarps of the grape Kyoho by TLC, HPLC and UV spectrophotometry. In the exocarps, quercetin 3-O-glucoside was the main compound while isorhamnetin 3-O-glycoside (I) was present in minor amounts. In leaves, on the other hand, quercetin 3-O-glucoside and quercetin 3-O-glucoside-7-O-glucronide were the major compounds while isorhamnetin 3-O-glycoside (II) and kaempferol 3, 7-O-diglycoside were present in minor amounts.