油脂中のトコフェロールの分解に及ぼす油脂の熱酸化と加水分解促進剤,ならびにそれらの阻害剤の影響について
1992 年 25 巻 4 号 p. 272-277
詳細
1992 年 25 巻 4 号 p. 272-277
The effect of thermal oxidation and hydrolytic promoters of oil or their inhibitors were investigated on the deterioration of oil and decomposition of tocopherol (Toc) in oil with or without an aluminum cover float. Vegetable oils (soybean, hardened soybean, rapeseed and olive oils) under the presence of oxidation promoters of oil (ferric and cupric stearates), hydrolytic promoters of oil (stearic and citric acids, or magnesium oxide) and their inhibitors were heated in glass tubes (2.7×20cm) at 180°C.
The deterioration of oil and decomposition of Toc in oil were apparently promoted by addition of ferric and cupric stearates. On the other hand, the added silicone oil, tert-butylhydroquinone (TBHQ) and ascorbyl palmitate (As. P) showed preventive effects on the deterioration of oil and decomposition of Toc in oil. And moreover, the deterioration of oil and decomposition of Toc in oil containing As. P heated with the aluminum cover float were clearly less than those without the float.
