• 한국약용작물학회:학술대회논문집
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• 2011.09a
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• pp.334-335
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• 2011

• The Korean Journal of Food And Nutrition
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• v.11 no.1
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• pp.68-71
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• 1998

In order make natural food color from gardenia(Gardenia jasminoides), we investigated optimal conditions of color extraction, in case of water extraction, optimal conditions for color extraction were 7$0^{\circ}C$, 48hrs, pH 7.0 and substrate 10%, respectively. And extracted crude color was purified by activated white clay, were isolated glycoside peak (238nm) and yellow color peak(40nm) from extracted crude color. The pruified color was increased by 27-fold and the yield was 96%.

• Korean Journal of Pharmacognosy
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• v.27 no.4
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• pp.389-396
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• 1996

Spiraea prunifolia var. simpliciflora (Rosaceae) is a deciduous. latifoliate shrub growing in most parts of Korea. The roots of this plant have been used for malaria, as antipyretics and emetics. From the roots of this plant, sterol glycoside and two triterpenoids were isolated and the structures were elucidated by chemical and spectroscopic methods. They were identified as $3{\beta}-hydroxyurs-12-ene-28-oic$ acid (ursolic acid.1), $2{\alpha}$, $3{\beta}$, $19{\alpha}-trihy-droxyurs-12-ene-28-oic$ acid (tormentic acid.2) and ${\beta}-sitoste-rol-3-O-{\beta}-D-glucopyranoside$ (3).

• Proceedings of the Botanical Society of Korea Conference
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• 1995.06a
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• pp.79-90
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• 1995

Production of a cardiac glycoside, digoxin, by 12$\beta$-hydroxylation from digitoxin was studied in plant cell suspension cultures of Digitalis lanata. In order to increase the conversion yield, various culture conditions including immobilization were investigated and optimized. Since digoxin was released in the medium temporarily and converted further into a glucosylated product, deacetyllanatoside C, in situ adsorption of digoxin was employed to recover the product continuously. Amberlite resin XAD-8 showed the best adsorption characteristics for digoxin among the examined resins, and an integrated process was developed to increase the productivity. In addition, it was found that the utilization of $\beta$-cyclodextrin to entrap digoxin during the culture enhanced the biotransformation yield significantly.

• Korean Journal of Pharmacognosy
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• v.27 no.1
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• pp.80-82
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• 1996

Nucleoside, flavonol glycoside and disaccharide have been isolated from the aerial part of Angelica keiskei Koidz and identified by means of spectral analysis as adenosine, hyperoside and sucrose, respectively.

• Korean Journal of Pharmacognosy
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• v.21 no.2
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• pp.111-120
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• 1990

Five biflavones and sevenflavonolglycosideswereisolatedfromtheleaves of Ginkgo biloba. They were sciadopitysin(1), ginkgetin(2), isoginkgetin(3), bilobetin(4), amentoflavone(5), kaempferol 3-O-[$6'-O-{\rho}-coumaroyl-{\beta}-_D-glucopyranosyl(1{\rightarrow}2)-{\alpha}-_Lrhamnopyranoside$](6), quercetin 3-O-[$6'-O-{\rho}-coumaroyl-{\beta}-_D-glucopyranosyl(1{\rightarrow}2)-{\alpha}-_Lrhamnopyranoside$](8), rutinosides of kaempferol(7), isorhamnetin(9), quercetin(10), laricitrin(11), and kaempferol 3-O-($2',6'-{\alpha}-_L-dirhamnopyranosyl-{\beta}-_{D}-glucopyranoside$)(12). The structures were established by spectroscopic and chemical methods.

• Korean Journal of Pharmacognosy
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• v.27 no.1
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• pp.75-79
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• 1996

Four steroids and one flavonol glycoside were isolated from the ethanol extract of the whole plant of Aconitum pseudolaeve var. erectum. Their structures were identified as ${\beta}-sitost-4-en-3-one$, 22-dihydro-stigmast-4-en-3,6-dione, ${\beta}-sitosterol$, ${\beta}-sitosterol-3-O-{\beta}-D-glucopyranoside$ and $kaempferol-3-O-{\beta}-D-glucopyranoside(astragalin)$ on the basis of spectral data.

• Korean Journal of Pharmacognosy
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• v.38 no.4
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• pp.358-362
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• 2007

From the EtOAc fraction of the MeOH extract of Ulmus davidiana, (-)-catechin (1), (-)-catechin-7-O-${\beta}$-D-apiofuranoside (2), and (-)-catechin-7-O-${\beta}$-D-xylopyranoside (3) were isolated and characterized on the basis of $^1H-and\;^{13}C-NMR$, and FABMS spectral data. Compounds 1-3 showed more strong reducing power activities than ${\alpha}-tocopherol$, a positive control.

• Applied Biological Chemistry
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• v.42 no.3
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• pp.267-270
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• 1999

• Journal of Applied Biological Chemistry
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• v.61 no.1
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• pp.79-82
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• 2018

An ${\alpha}-{\text\tiny{D}}-glucoside$ of sesterterpene, 11-epiterpestacin, was isolated from the culture of a filamentous fungus Bipolaris sorokiniana NSDR-011. The structure was elucidated by chemical studies and spectroscopic methods including NMR and ESI-MS. 11-ETG (1) named arbitrarily did not inhibit the root growth of Italian ryegrass seedlings even at the level of 200 ppm, while its aglycone 11-ET (2) completely inhibited root growth at level of 100 ppm.