K. Hirata, K. Ito, M. Hirokado, Y. Uematsu, Kumi Suzuki, Sukeji Suzuki, Kazuo Saito
{"title":"Determination of sulfur dioxide content of grape skin extract and elderberry color by capillary electrophoresis.","authors":"K. Hirata, K. Ito, M. Hirokado, Y. Uematsu, Kumi Suzuki, Sukeji Suzuki, Kazuo Saito","doi":"10.3358/SHOKUEISHI.41.144","DOIUrl":null,"url":null,"abstract":"食品添加物のブドウ果皮色素及びエルダベリー色素に残留する亜硫酸由来の二酸化硫黄 (SO2) を簡易で迅速性のあるキャピラリー電気泳動を用いて測定する方法を検討した. 改良ランキン装置を用いた22分間の通気蒸留 (窒素ガス) により得たSO2を, 0.6%過酸化水素水に硫酸として捕集した. 硫酸イオンは80.5cmのカラムで, pH 5.6の泳動液を用い, 240nmで測定した. 色素にSO2として25~1,000μg/g添加したときの回収率は86~104%で, 定量限界は15μg/gであった. 本法を市販色素に適用した. ブドウ果皮色素5試料からSO2として38.4~944μg/g検出され, エルダベリー色素5試料ではすべて定量限界以下であった. 本法と比色法との値もよく一致した.","PeriodicalId":17269,"journal":{"name":"Journal of The Food Hygienic Society of Japan (shokuhin Eiseigaku Zasshi)","volume":"51 1","pages":"144-148"},"PeriodicalIF":0.0000,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of The Food Hygienic Society of Japan (shokuhin Eiseigaku Zasshi)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3358/SHOKUEISHI.41.144","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}