M. N. Krishna Murthy, S. Rajalakshmi, J. A. Satyabodha, K. Nagaraja
{"title":"软饮料中溴化植物油的定性比色试验。","authors":"M. N. Krishna Murthy, S. Rajalakshmi, J. A. Satyabodha, K. Nagaraja","doi":"10.1093/JAOAC/74.4.698","DOIUrl":null,"url":null,"abstract":"A simple and precise method of detecting brominated vegetable oil (BVO) in soft drinks is described. After extraction of BVO using diethyl ether, the concentrated ethereal solution was treated with a small quantity of zinc dust to convert the organic bromide to inorganic form; the solution was subsequently treated with lead dioxide to liberate bromine. The bromine evolved was detected by means of fluorescein-impregnated filter paper strip that turns pink because eosin is formed. The test can detect as low as 10 ppm (2 mg/200 ml) of BVO under experimental conditions. Gas chromatography was carried out on sodium methoxide derivatives prepared from ether extract for quantitation.","PeriodicalId":14752,"journal":{"name":"Journal - Association of Official Analytical Chemists","volume":"21 1","pages":"698-9"},"PeriodicalIF":0.0000,"publicationDate":"1991-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"A qualitative colorimetric test for brominated vegetable oil in soft drinks.\",\"authors\":\"M. N. Krishna Murthy, S. Rajalakshmi, J. A. Satyabodha, K. Nagaraja\",\"doi\":\"10.1093/JAOAC/74.4.698\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A simple and precise method of detecting brominated vegetable oil (BVO) in soft drinks is described. After extraction of BVO using diethyl ether, the concentrated ethereal solution was treated with a small quantity of zinc dust to convert the organic bromide to inorganic form; the solution was subsequently treated with lead dioxide to liberate bromine. The bromine evolved was detected by means of fluorescein-impregnated filter paper strip that turns pink because eosin is formed. The test can detect as low as 10 ppm (2 mg/200 ml) of BVO under experimental conditions. Gas chromatography was carried out on sodium methoxide derivatives prepared from ether extract for quantitation.\",\"PeriodicalId\":14752,\"journal\":{\"name\":\"Journal - Association of Official Analytical Chemists\",\"volume\":\"21 1\",\"pages\":\"698-9\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1991-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal - Association of Official Analytical Chemists\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1093/JAOAC/74.4.698\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal - Association of Official Analytical Chemists","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1093/JAOAC/74.4.698","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A qualitative colorimetric test for brominated vegetable oil in soft drinks.
A simple and precise method of detecting brominated vegetable oil (BVO) in soft drinks is described. After extraction of BVO using diethyl ether, the concentrated ethereal solution was treated with a small quantity of zinc dust to convert the organic bromide to inorganic form; the solution was subsequently treated with lead dioxide to liberate bromine. The bromine evolved was detected by means of fluorescein-impregnated filter paper strip that turns pink because eosin is formed. The test can detect as low as 10 ppm (2 mg/200 ml) of BVO under experimental conditions. Gas chromatography was carried out on sodium methoxide derivatives prepared from ether extract for quantitation.
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