• Title/Summary/Keyword: Rhizomes

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Zostera geojeensis, a New Species of Seagrass from Korea

  • Shin, Hyun-Chur;Cho, Kang-Hyun;Oh, Yoon-Sik
    • ALGAE
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    • v.17 no.2
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    • pp.71-74
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    • 2002

  • Zostera geojeensis, a new species from Geojedo Island located on the south coast of Korea, is described and compared with othe rrelated species of Zostera. It is very similar to Z. caespitosa Miki in having congested internodes of rhizomes but differes from that by having obtuse or cuspidate and transparent leaf margins at apices.

  • https://doi.org/10.4490/ALGAE.2002.17.2.071 인용 PDF KSCI

Effects of Stilbene Derivatives from Rheum undulatum on $5{\alpha}-Reductase$ Activity ($5{\alpha}-Reductase$ 활성에 미치는 종대황 스틸벤 유도체의 영향)

  • Ko, Sung-Kwon
    • Korean Journal of Pharmacognosy
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    • v.31 no.2
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    • pp.245-248
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    • 2000

  • As a series of the studies on cultivated Korean rhubarb rhizomes (Rheum undulatum), five stilbene derivatives were screened for inhibitory activity against $5{\alpha}-reductase$. Of these, desoxyrhapontigenin, rhapontigenin, and piceatannol exhibited inhibition, whereas, two other stilbene glycosides, rhaponticin and $piceatannol-3'-O-{\beta}-D-glucopyranoside$ did not show the inhibition.

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A Further Furostanol Glycoside From Smilax china

  • Kim, Sung-Whan;Chung, Kyu-Charn;Son, Kun-Ho;Kang, Sam-Sik
    • Korean Journal of Pharmacognosy
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    • v.20 no.3
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    • pp.145-146
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    • 1989

  • A furostanol glycoside, $mp\;190{\sim}198^{\circ}$, was isolated from the MeOH extract of Smilax china rhizomes. The structure was established as a mixture of $26-O-{\beta}-_D-glucopyranosyl-(25R)-22-methoxy-furost-5-en-3\beta,26-diol\;3-O-\alpha-_L-rhamnopyranosyl-(1\rightarrow2)-\beta-_D-glucopyranoside$ and its 22-hydroxy derivative on the basis of spectral data and chemical correlations.

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