薄層クロマトグラフィーを用いる生薬成分の定量法に関する研究(第2報) : 薄層クロマトグラフィーを用いるカンゾウ中のGlycyrrhizinの定量法の研究

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タイトル別名
  • Studies on the Quantitative Analysis of Constituents in Crude Drugs by Thin-Layer Chromatography. II. : Studies on the Quantitative Analysis of Glycyrrhizin in Liquorice Root by Thin-Layer Chromatography
  • 薄層クロマトグラフィーを用いる生薬成分の定量法に関する研究-2-薄層クロマトグラフィーを用いるカンゾウ中のglycyrrhizinの定量法の研究(ノート)
  • ハクソウ クロマトグラフィー オ モチイル ショウヤク セイブン ノ テイリョウホウ ニ カンスル ケンキュウ 2 ハクソウ クロマトグラフィー オ モチイル カンゾウ チュウ ノ glycyrrhizin ノ テイリョウホウ ノ ケンキュウ ノート

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A new method for the determination of glycyrrhizin in Liquorice root by spectrophotometric measurements has been deviced, after its separation from the other constituents by TLC. 0.05 gram of powdered Liquorice root was extracted with 50% (v/v) ethanol, which was chromatographed on Kieselgel plate using as developer a mixture of butanol-3N NH4OH-ethanol (=5 : 2 : 1). (Fig.1). The g1ycyrrhizin portion was scratched out of the chromatogram and extracted with 50% (v/v) ethanol. The absorption was measured through the filter 252 mμ and the glycyrrhizin content was determined according to the calibration curve (Fig.2) previously prepared. This manipu1ation took about 12 hours and the recovery rate was found to be more than 95% in average (Table II). Considering that the separation of g1ycyrrhizin from the other accessary components is complete, this method can be considered to be superior to the previously described ones.

収録刊行物

  • 薬学雑誌

    薬学雑誌 90 (4), 497-501, 1970

    公益社団法人 日本薬学会

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