YAKUGAKU ZASSHI
Online ISSN : 1347-5231
Print ISSN : 0031-6903
ISSN-L : 0031-6903
槐花のルチン定量法
今井 統雄古谷 潔
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1952 年 72 巻 12 号 p. 1560-1564

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Attempt was made to find a simple and rapid determination method for rutin in Kaika, a crude drug composed of the flower buds of Sophora japonica L. The reaction conditions of rutin-Al complex, and the correlation between rutin concentration and absorption were statistically examined. The flower buds were extracted with 99% methanol, using a new type extractor, treated with ether to remove quercetin, and diluted with a suitable amount of methanol to prepare a sample solution. To 2cc. of this sample solution, 3cc. of 0.1 mole aqueous solution of aluminum chloride and 5cc. of 1 mole aqueous solution of potassium acetate were added, allowed to stand at a room temperature for two hours, and the absorption (y) of rutin-Al complex was measured by a photoelectric colorimeter, using S-47 filter. The percentage of rutin (x) at 95% confidence limit was calculated from the following equation: x=(0.0612y-0.00072)±0.00049.

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© by the PHARMACEUTICAL SOCIETY OF JAPAN
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