• Journal of Ginseng Research
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• v.14 no.2
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• pp.112-116
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• 1990

As a part of studies on the quality control of crude drug preparation drinks, ginseng saponins were identified by HPLC. Ginsenoside-Rb1 was determined quantitatively by HPLC. Ginsenoside MeOH/H2O(65:35:10, v/v) on Si-gel plate. Ginsenoside-Rb1 content determined by HPLC on Lichrosorbtract drinks was 57.5-70.4% compared to the content in the red ginseng extract.

• Journal of Ginseng Research
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• v.15 no.1
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• pp.1-5
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• 1991

For the quality control of crude drug drink preparations, methods for identification of cinnamon components and quantitative determination of cinnamic acid were established. Cinnamon components were identified by TLC with benzene/ethyl acetate (1:1, v/v) on silica gel plate by spraying p-anisaldehyde-sulfuric acid. Cinnamic acid contents were determined at UV 280 nm by HPLC on $\mu$-Bondapak Cls column with acetonitrile/water/acetic acid (40:60:2, v/v). Recoveries of cinnamic acid in three crude drug drink preparations were between 84.1-90.2% compared to the content of the cinnamon extract.

• Journal of Ginseng Research
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• v.14 no.3
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• pp.442-446
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• 1990

As a part of studies on the quality control of crude drug-drink preparations, ginger components were identified by TLC and 6-gingerol was determined quantitatively by HPLC. Ginger components were identified by TLC with benzene/acetone (4:1, v/v, on silica gel plate by spraying a vanillinsulfuric acid reagent. 5-Gingerol contents were determined at 280 nm by HPLC on Lichro CART RP-18 column with acetonitrile/wate(38:62, v/v). Its transfer rate in the 3 types of crude drug extract drinks was 65.4-85.1% compared to the content in the ginger extract.