著者

守安 貴子 重岡 捨身 岸本 清子 石川 ふさ子 中嶋 順一 上村 尚 安田 一郎

出版者

公益社団法人日本薬学会

雑誌

藥學雜誌 (ISSN:00316903)

巻号頁・発行日

vol.121, no.10, pp.765-769, 2001-10-01

被引用文献数

13 35

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A substantially available identification system for Sildenafil in health foods was established using 3 different analytical mathods; i.e.TLC, preparative TLC/MS and HPLC/photo-diode array. Sildenafil in health foods was extracted with ethyl acetate under alkaline conditions as sample solutions for TLC and preparative TLC, and also extracted with 50% methanol and then diluted with solution of HPLC mobile phase for HPLC. The sample solution for TLC was applied to Silica gel 60 F_<254> plates with chloroform/methanol/28% ammonia(90:1:5, under layer)as mobile phase. Spots were located under UV radiation at 254 nm and 366 nm, and spraying dragendorff reagent. The conditions for preparative TLC were the same as these of TLC method, samples abtained from preparative TLC were determined by MS with APCI interface, under both positive and negative modes. The HPLC analysis was carried out on a column of Cosmosil 5C18-AR(4.6mm×150mm, 5μm)with 0.05 mol/l phosphate buffer pH 3.0/acetonitrile(73:27)as mobile phase and the eluate was monitored by a photo-diode array detector. The quantitative analysis was available, when the peak of this sample on HPLC was detected at 290nm. When this system was applied to commercial health foods, Sildenafil was identified and their contents were 25 mg-45 mg/tablet or bottle. These contents nearly correspond to that in Viagra, 25 mg, 50 mg/tablet. Therefore, there is a fear of side effects for Sildenafil, when it is taken as health foods.