光催化下菜油氧化亚硫酸化工艺的研究

Study on Oxidised-sulphited Process of Rapeseed Oil with Photo-catalyzed System

在光催化下对经甲醇醇解改性的菜油进行空气常温氧化，然后对氧化产物进行亚硫酸化。试验最佳的工艺技术参数为：氧化反应过程中，助剂R1的用量为油脂质量的1．5％，光波为长波（365nm），常温氧化反应4～6h；亚硫酸化反应温度70～75℃，亚硫酸钠用量10％～12％，时间2～3h。应用试验表明，该方法制备的氧化亚硫酸化菜油具有良好的加脂性能。

Catalyzed with ultra violet light （ UV）, the alcoholysed rapeseed oil was oxidized with air at room temperature, and then sulphited. The optimized conditions for oxidation are： room temperature, amount of catalyst during oxidation is 1.5%, wave length of light is long wave（365nm） and reaction time is 4 - 6h ; and those for sulphitation are ： temperature is 70 - 75℃, amount of sulphite is 10% - 12%, reaction time is 2 -3h. The application experiments show that the oxidized - sulphited rapeseed oil produced with this process has good properties.