新大豆及储存受害大豆的毛油中磷脂成分研究(英文)

Studies on Phospholipids in Crude Oils from Fresh and Storage- Damaged Soybeans

大豆在储运中因湿度和温度过高而受损害后，磷脂组份发生较大的化学变化，色谱分析表明，不可皂化部分（主要是甾醇）和ＰＡ含量增加，而主要磷脂成份ＰＥ、ＰＩ、ＰＣ含量减少。受损害大豆毛油水化脱胶困难及脱胶后油中磷含量偏高均与磷脂组份发生化学变化有关。

The soybean phospholipids are chemically changed significantly when the soybean seeds are stored under high heat and humidity conditions. LC analyses of the phospholipids showed that the contents of unsoponifiables(the main component of these is sterol) and PA are increased significantly, on the other hand, the contents of main phospholipis, PE, PI and PC, are decreased significantly. The difficulty of degumming storage-damaged soybean crude oil and high phosphorous content of degummed oil are apparently related to chemical changes of the phospholipids compositions.