硅酸镁对高酸值油茶籽油的吸附效果  

Adsorption effects of magnesium silicate on oil-tea camellia seed oil with high acid value

作　　者：田潇潇 罗凡[1] 杜孟浩[1] 郭少海[1] 方学智[1] 罗力军 严朝阳 崔旭 TIAN Xiaoxiao;LUO Fan;DU Menghao;GUO Shaohai;FANG Xuezhi;LUO Lijun;YAN Zhaoyang;CUI Xu(Research Institute of Subtropical Forestry,Chinese Academy of Forestry,Hangzhou 311400,China;Shaoxing Shangyu Jiehua Chemical Co.,Ltd.,Shaoxing 312000,Zhejiang,China)

机构地区：[1]中国林业科学研究院亚热带林业研究所,杭州311400 [2]绍兴上虞洁华化工有限公司,浙江绍兴312000

出　　处：《中国油脂》2021年第3期18-21,27,共5页China Oils and Fats

基　　金：浙江省科技重点研发计划(2017C02003);硅酸镁(滤油粉)精制山茶油工艺优化及效益评估(2020330101000721)。

摘　　要：通过测定油茶籽油的酸值、过氧化值和色值,研究了硅酸镁对高酸值油茶籽油吸附效果的影响。结果表明:随着吸附时间的延长,油茶籽油的酸值呈明显下降趋势;硅酸镁对油茶籽油过氧化值有一定的降低作用;硅酸镁对脱除油茶籽油中黄色素十分有效,也可以脱除红色素;硅酸镁最佳吸附工艺条件为硅酸镁添加量1.5%、吸附温度80℃、吸附时间20 min,在此吸附条件下,油茶籽油的酸值、色值a*、色值b*降低率分别为8.52%、13.77%和40.88%。The adsorption effects of magnesium silicate on high acid value oil-tea camellia seed oil were discussed by measuring acid value,peroxide value and color value of oil-tea camellia seed oil. The results showed that the acid value of oil-tea camellia seed oil decreased obviously with the prolonging of adsorption time. Magnesium silicate could decrease the peroxide value of oil-tea camellia seed oil.Magnesium silicate could remove yellow pigment from oil-tea camellia seed oil effectively,as well as red pigment. The optimal adsorption conditions of magnesium silicate were obtained as follows: magnesium silicate dosage 1. 5%,adsorption temperature 80 ℃,adsorption time 20 min. Under these conditions,the reduction rates of the acid value,color value a* and b* of oil-tea camellia seed oil were 8. 52%,13. 77% and 40. 88% respectively.

关 键 词：油茶籽油 硅酸镁 色值 酸值 过氧化值 

分 类 号：TS225.1[轻工技术与工程—粮食、油脂及植物蛋白工程] TS224[轻工技术与工程—食品科学与工程]