A qualitative colorimetric test for brominated vegetable oil in soft drinks.

Krishnamurthy, M. N. and Rajalakshmi, S. and Satyabodha, J. A. and Nagaraja, K. V. (1991) A qualitative colorimetric test for brominated vegetable oil in soft drinks. Journal of the Association of Official Analytical Chemists, 74 (4). pp. 698-9. ISSN 0004-5756

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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.

Item Type:	Article
Uncontrolled Keywords:	brominated, vegetable oils, soft drinks
Subjects:	600 Technology > 07 Beverage Technology > 07 Soft drinks 600 Technology > 08 Food technology > 01 Analysis
Divisions:	Food Safety Analytical Quality Control Lab
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	15 Nov 2021 04:55
Last Modified:	15 Nov 2021 04:55
URI:	http://ir.cftri.res.in/id/eprint/2329

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