【摘要】 为了得到高质量的大豆磷脂 ,用于制取磷脂的毛油在水化之前应进行过滤除杂 ,蒸汽、水是水化脱胶的理想用水 ,合适的水量为相当于毛油中磷脂含量 ,很多脱胶剂对磷脂有不良作用 ,但乙酸酐除外 ,乙酸酐在水化时可与磷脂酰胆胺形成乙酰化磷脂 ,在水化脱胶时加磷酸使水化油脚在浓缩时磷脂焦化变黑 ,加无机盐影响磷脂的质量和性能 ,在实际离心分离操作中 ,应注意离心压力差而不是被压。更多还原

【Abstract】 In order to get high quality lecithin,crude oil from which lecithin is to be recovered is usually filtered prior to degumming to remove impurities.Steam or water is ideal for a good high quality lecithin.Optimal water concentration appears to be closest to the phospholipid content of the crude oil.Most additives used to aid degumming are usually deleterious to the lecithin,except for acetic anhydride.Acetic anhydride will react with the lecithin gums to form some acylated phospholethanolamine.Other additives such as phosphoric acid tend to burn the lecithin on drying.Inorganic salts affect the physical and functional properties.In actual centrifugal process,operational focus should be placed on centrifugal pressure differential rather than on backpressure.更多还原