乳粉中卵磷脂含量的测定  

The Determination of Lecithin in Milk Powder

作　　者：李卓 仝建刚[2] 张均媚 刘伟娟 薛刚 

机构地区：[1]天津市乳品食品检测中心,天津300381 [2]天津市出入境检疫检验局,天津300260

出　　处：《食品研究与开发》2011年第5期137-139,共3页Food Research and Development

摘　　要：卵磷脂是一种天然的表面活性剂,因它具有很多特殊的生理功效而得到人们的普遍重视。根据卵磷脂易溶于醇类的化学性质,选择用乙醚提取样品中的卵磷脂,通过湿法消化,然后用分光光度计测定样品中磷的含量,继而计算出卵磷脂的含量。经过多次的测量此方法的结果相对偏差为0.071。Lecithin is one kind of natural surface active agent,because it has many special physiological functions which have paid a great attention.As the chemical properties soluble in alcohol,the methods of the study samples by ether extraction of the lecithin,by wet digestion,and then measured by spectrophotometer in the phosphorus content of samples,and then calculated the concentration of lecithin.Method is simple,rapid and accurate,it is compatible with the application of lecithin in milk powder samples.The results of multiple measurements 0.071.

关 键 词：卵磷脂 分光光度计 测定 

分 类 号：TS252.7[轻工技术与工程—农产品加工及贮藏工程]