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A modified acetic anhydride-sulphuric acid color test for oils

✍ Scribed by G. Azeemoddin; S. D. Thirumala Rao; B. R. Reddy

Book ID: 112807267
Publisher: Springer-Verlag
Year: 1973
Tongue: English
Weight: 103 KB
Volume: 50
Category: Article
ISSN: 0003-021X
DOI: 10.1007/bf02640531

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Response of cottonseed oil products to t

Response of cottonseed oil products to the kreis test for rancidity : In the Kreis test a fat or oil is shaken with equal volumes of hydrochloric acid and a solution of phloroglucinol in ether. The development of a red color indicates that the fat or oil is rancid; its formation is probably due to the presence of aldehydes or ketones in the material tested. Chromogenetic substances, which give a positive Kreis reaction, occur in crude cottonseed oil. The researches of W. B. Smith (Journal of Industrial and Engineering Chemistry, 1920, xii, 764–766)

📂 Article 📅 1920 🏛 Elsevier Science 🌐 English ⚖ 82 KB