A simple method for estimating carbonyl content in peroxide-containing oils

• Published in: Journal of the American Oil Chemists' Society Vol. 66; no. 11; pp. 1588 - 1592
• Main Authors: Chiba, T. (Iwate Prefectural Morioka Junior College, Morioka, Japan), Takazawa, M, Fujimoto, K
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.11.1989; Springer
• Subjects: ACEITE DE CARTAMO; ACEITE DE MAIZ; ACEITE DE SOJA; ANALYTICAL METHODS; Applied sciences; autoxided oils; Biological and medical sciences; CARBONYL COMPOUNDS; Chemical industry and chemicals; COMPOSE CARBONYLE; Composition, physical and chemical properties; COMPUESTOS CARBONILADOS; Exact sciences and technology; Fat industries; Food industries; Fundamental and applied biological sciences. Psychology; HUILE DE CARTHAME; HUILE DE MAIS; HUILE DE SOJA; hydroperoxides; INSECTICIDAS; INSECTICIDE; INSECTICIDES; LIPID PEROXIDATION; LIPIDE; LIPIDOS; LIPIDS; MAIZE OIL; Oils and fats; OXIDACION; OXIDATION; OXYDATION; PEROXIDES; PEROXIDOS; PEROXYDE; PHOSPHINE; SAFFLOWER OIL; SOYBEAN OIL; TECHNIQUE ANALYTIQUE; TECNICAS ANALITICAS; triphenyl phosphine; Chemical analysis; Carbonyl Compounds; Oils and fats; Organic peroxide; Assay; Measurement; Oxidation; Vegetal oil
• ISSN: 0003-021X; 1558-9331
• DOI: 10.1007/bf02636182

A simple method is described for the estimation of carbonyl content in peroxide‐containing oils. In this method, peroxides, which interfere with carbonyl determination, are reduced with triphenyl phosphine prior to carbonyl determination. Carbonyl content is measured by a colorimetric 2,4‐dinitrophenyl hydrazone procedure. Neither triphenyl phosphine nor triphenyl phosphine oxide, oxidation products of triphenyl phosphine by reaction with peroxides, interfere with the measurement of carbonyl content. The method is applicable to several kinds of oxidized oils in any oxidation stage.