Korean Journal of Pharmacognosy (생약학회지)

The Korean Society of Pharmacognosy (한국생약학회)
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Quantitative Determination of Dioscin from Dioscorea Rhizoma

산약(山藥; Dioscorea Rhizoma)으로부터 Dioscin의 분리 분석

  • Published : 2006.03.30
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Abstract

The quantitative analytical method for the content of dioscin in Dioscorea rhizoma using a high performance liquid chromatography(HPLC) system was established for its quality control. After extracting Discorea rhizoma flour with ethanol, dioscin was separated though an ODS column with a flow rate of 1.0ml/min of acetonnitril-methanol-0.01 M phosphate buffer (pH 5.0)(6:3:1, v/v%), and the amount of dioscin was detected at 210nm. Relation time of dioscin in HPLC chromatogram were about $7.45{\pm}0.34\;min$ and calibration curve showed good linearity at concentrations from 0.1 to 2.0 mg/ml of dioscin. When 5 commercial Dioscorea rhizoma flours were analyzed by HPLC, the peak for dioscin was well separated from others in ethanol extract of Dioscorea rhizoma, and the amount of dioscin was in the range from 0.076 to 0.142(w/w)%.

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References

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