以溶剂粗提后的大豆卵磷脂粗品为原料,采用氧化铝吸附法进行提纯.系统考察了氧化铝用量、乙醇用量、吸附时间和吸附温度等因素对大豆卵磷脂粗品中磷脂酰胆碱(PC)纯度及回收率的影响,得到最佳工艺条件为:大豆卵磷脂粗品与氧化铝质量比为1∶5,大豆卵磷脂粗品与无水乙醇配比为1∶60(m/v),吸附时间60min,吸附温度30℃.在此条件下,PC的纯度和回收率分别为70.23％和83.07％.%Alumina adsorption method was used for the futher purification of soyabean lecithin,which was obtained by the preliminarily purification of concentrated soybean lecithin using solvent extraction method. Effects of crude lecithin to alumina mass ratio, crude lecithin mass to absolute alcohol volume ratio, adsorption time and temperature on the purity and recovery of phosphatidylcholine(PC) were investigated. The optimal adsorption conditions were as follows: crude lecithin to alumina mass ratio was 1:5, crude lecithin mass to absolute alcohol volume ratio was 1:60, adsorption time was 60 minutes, adsorption temperature was 30℃. Under this optimal condition,the purity and recovery of PC were 70.23% and 83.07%, respectively.
展开▼
