顔料による油脂・香料の劣化とその防止
スポンサーリンク
概要
- 論文の詳細を見る
1) Oxidation of fats and oils by the pigments with oxygen gas flow-DTA is described. The pigments promoting the oxidation of fats and oils are color pigments with transition elements such as chromium, iron and manganese.<BR>2) Decomposition of purfumes by pigments with a microcatalytic reactor is described. In nitrogen, the following dicomposition mechanism is suggested for linalool from the decomposition products : Dehydrated linalool is formed <I>via</I> a carbonium ion intermediate formed on acidic sites on the pigments, and cyclized products are formed after allyl rearrangement. Finally, <I>p</I>-cymene, which is a main cause of unpleasant odor in some pigmented cosmetics, is formed by dehydrogenation of the cyclized products.<BR>3) Inactivation of catalytic activity of pigments by using CVD (Chemical Vapor Deposition) of silicone is described. Silicone film on the pigments is about 10 Å, and many functional groups can be added to the film.
- 社団法人 日本油化学会の論文