• Korean Journal of Pharmacognosy
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• v.20 no.2
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• pp.76-82
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• 1989

Five known diosgenin glycosides have been isolated from the MeOH extract of Smilax china rhizomes and characterized as prosapogenin A of dioscin, dioscin, gracillin, methyl protogracillin, methyl protodioscin and its corresponding 22-hydroxy analog. This is the first isolation of the former four compounds from this plant. ${\beta}-Sitosterol\;glucoside$ was also isolated and identified.

• Archives of Pharmacal Research
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• v.22 no.4
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• pp.401-403
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• 1999

In continued studies on cultivated Korean rhubarb rhizomes (Rheum undulatum), three known stillbenes (desoxyrhapontigenin, rhapontigenin, piceatannol) have been screened for activity on blood platelet aggregation. Both rhapontigenin and desoxyrhapontigenin exhibited strong inhibition on the aggregation induced by arachidonic acid collagen. However, piceatannol did not show inhibition. These inhibitory effects may partially contribute to anti-blood stagnancy activity of rhubarb.

• Korean Journal of Pharmacognosy
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• v.24 no.4
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• pp.309-312
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• 1993

A new method for separation and quantitative determination of isoflavone glucosides in rhizomes of Belamcanda chinensis (Iridaceae) by high performance liquid chromatography was elaborated. A reverse-phase system with a Spheri-5 RP-18 column using MeOH:HOAc:$H_2O$(24 : 5 : 71) as a mobile phase was developed. The isoflavonoids were detected at 268 nm and the analysis was successfully carried out within 15 min.

• Korean Journal of Pharmacognosy
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• v.24 no.3
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• pp.187-191
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• 1993

Three compounds were isolated from the rhizomes of Dioscorea quinqueloba and identified as $diosgenin\;3-O-{\alpha}_-L-rhamnopyranosyl(1{\rightarrow}2)-{\beta}-_D-glucopyranoside$, dioscin and gracillin by chemical and spectroscopic means.

• Korean Journal of Pharmacognosy
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• v.31 no.4
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• pp.426-429
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• 2000

Five compounds have been isolated from the rhizomes of Polygonum bistorta. On the basis of spectral evidences, these compounds were identified as catechol, 4- hydroxybenzaldehyde, umbelliferone, scopoletin and pyrogallol.

• YAKHAK HOEJI
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• v.33 no.5
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• pp.285-289
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• 1989

Pontential mutagenic and antimutagenic activities of four steroidal saponins from Smilax china rhizomes were investigated. These saponins did not revealed mutagneicity in the Ames and SOS umu test. For antimutagenic activity by SOS umu test, two spirostanol glycosides, dioscin and gracillin, inhibited the activity of ${\beta}-galactosidase$ induced by AF-2, but their proto-type furostanol glycosides did not show this activity.

• Biomolecules & Therapeutics
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• v.20 no.5
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• pp.477-481
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• 2012

The rhizomes of Acorus gramineus have frequently been used in traditional medicine mainly for sedation as well as enhancing brain function. In this study, the anti-allergic activity of A. gramineus was investigated. The 70% ethanol extract of the rhizomes of A. gramineus was found to inhibit the allergic response against 5-lipoxygenase (5-LOX)-catalyzed leukotriene (LT) production from rat basophilic leukemia (RBL)-1 cells and ${\beta}$-hexosaminidase release from RBL-2H3 cells with $IC_{50}$'s of 48.9 and > $200{\mu}g/ml$, respectively. Among the 9 major constituents isolated, ${\beta}$-asarone, (2R,3R,4S,5S)-2,4-dimethyl-1,3-bis (2',4',5'-trimethoxyphenyl)tetrahydrofuran (AF) and 2,3-dihydro-4,5,7-trimethoxy-1-ethyl-2-methyl-3-(2,4,5-trimethoxyphenyl)indene (AI) strongly inhibited 5-LOX-catalyzed LT production in A23187-treated RBL-1 cells, AI being the most potent ($IC_{50}=6.7{\mu}M$). Against ${\beta}$-hexosaminidase release by antigen-stimulated RBL-2H3 cells, only AI exhibited strong inhibition ($IC_{50}=7.3{\mu}M$) while ${\beta}$-asarone and AF showed 26.0% and 39.9% inhibition at $50{\mu}M$, respectively. In addition, the ethanol extract of A. gramineus showed significant inhibitory action against the hapten-induced delayed hypersensitivity reaction in mice by oral administration at 200 mg/kg. Therefore, it is suggested that A. gramineus possesses anti-allergic activity and the constituents including ${\beta}$-asarone and AI certainly contribute to the anti-allergic activity of the rhizomes of A. gramineus.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2009.05c
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• pp.89-97
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• 2009

As landscaping building roofs and concrete structures increase gradually for low carbon green growth policy of government, But waterproofing membranes of those structures are effecting by root penetration of landscape plant. 80, we progressed study about test method for fast evaluating root resistance of waterproofing materials jointly with Tokyo Institute of Technology. The result of the study is as follows: (1) The penetrating load of the needle at the displacement speed of 1mm/min was measured for various membrane to basis and lap joints of membrane, the load force was $3{\sim}50$ N by material variously. (2) According to the test method of deriving rhizomes of bamboo grass to basis and lap joints of membrane, there were no penetrated membrane until present, but need persistent observation. (3) Test method of deriving rhizomes of bamboo grass to basis and lap joints of membrane can shorten from period of 2 years to 1 year for testing. Because rhizomes of bamboo grass can grow from May to September, test is possible in same period.

• Korean Journal of Plant Taxonomy
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• v.46 no.2
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• pp.267-271
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• 2016

A newly recorded species, Schoenoplectiella ${\times}$uzenensis (Ohwi ex T. Koyama) Hayasaka, was found in Chosan Lake, Gosu-myeon, Gochang-gun, Jeollabuk-do, Korea. Schoenoplectiella ${\times}$uzenensis differs from its related species in having short rhizomes and 1 to 3 spikelets showing inflorescence. Schoenoplectiella triangulata has very short rhizomes and 520 spikelets with inflorescence. Schoenoplectiella lineolata has long creeping rhizomes and 1 spikelet showing inflorescence. We propose the new Korean name of 'Go-Chang-Go-Rang-Ei' based on its initial collection site. A description, line drawing, color photographs, table, and a species key of Korean Schoenoplectiella are provided for species identification.

• Korean Journal Plant Pathology
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• v.14 no.5
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• pp.484-490
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• 1998

Microorganisms associated with seed-rhizome rot of gingers preserved in three underground storage caves were identified with respect to rot types. Rot patterns were grouped into 4 different types : yellow soft rot, brown rot, localized ring rot, and water-soaked rot. Water-soaked rot was highest in frequency with 40% and ring rot the least with 14%. Causal pathogens differed with rot type, yellow soft rot by Erwinia carotovora and Pseudomonas aeruginosa, brown rot by Fusarium solani and Pseudomonas aeruginosa, localized ring rot by F. solani, and water-soaked rot by Pythium spinosum and P. ultimum. Pythium myriotylum, the causal pathogen of ginger rhizome rot which occurs severely in fields was rarely detected from storage seed-rhizomes suggesting its minor involvement with storage rot. Pathogenic Pythium isolates were frequently obtained from both rhizome surface and inner tissues of rotten rhizomes. Detection frequency of Pythium isolates in inner tissues decreased as increasing distance from rhizome surface. In wound-inoculation tests, above pathogens caused a varying degree of rot on healthy rhizomes at 15$^{\circ}C$, 2$0^{\circ}C$ and 3$0^{\circ}C$ with increasing severity at higher temperatures.