毛鱼油品质对脱色效果的影响

Effect on decolorizing for the quality of crude fish oil

为合理利用不同类型的毛鱼油资源,分别取储藏1天、1周和1个月后的压榨毛鱼油、淡碱水煮毛鱼油和溶剂萃取毛鱼油,通过单因素和正交实验确定最佳脱色条件:脱色时间30min、脱色温度95℃、白土添加量3.5%、活性炭添加量0.3%、此时下脱色率可达90.7%,在此基础上进行脱色实验。结果显示:3种毛鱼油最佳加工期是在制取毛鱼油一周之内,脱色时压榨毛鱼油和淡碱水煮毛鱼油只需以白土为脱色剂,溶剂萃取毛鱼油需同时以白土和活性炭为脱色剂。

To appropriately use different kinds of crude fish oil resouces,selected pressing oil,weak alkaline cooking oil and solvent extraction oil respectively,each of them divide into 3 types：stored for one day,one week and one month. By single factor and orthogonal test determined the best decoloring conditions：using 3.5% of active clay and 0.3% of active carbon at 95℃ for 30min.The ratio of decolourization was 90.7%.As a result：the processing period of fish oil is less than a week. For decoloring of the pressing oil and weak alkaline cooking oil ,we just use carclazyte, but for the solvent extraction oil ,we must use carclazyte and active carbon.