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介绍先用丙酮沉淀,再用乙醇与石油醚组成的二元混合溶剂萃取蛋黄卵磷脂的方法。对丙酮用量、丙酮pH值、乙醇与乙醇的比例及该二元混合溶剂用量4因素对卵磷脂提取率的影响进行研究。正交实验结果表明对10g蛋黄,丙酮用量为30mL、丙酮pH值为8、乙醇与石油醚的比例为3︰1且该二元混合溶剂用量为30mL时卵磷脂提取率最高。
This paper introduces the method of extracting egg yolk lecithin with binary mixture solvent consisting of ethanol and petroleum ether. The effects of the amount of acetone, the pH value of acetone, the ratio of ethanol to ethanol and the amount of the binary mixed solvent on lecithin extraction were studied. The results of orthogonal experiment showed that the extraction rate of lecithin was the highest for 10g egg yolk when the amount of acetone was 30mL, the pH value of acetone was 8, the ratio of ethanol to petroleum ether was 3︰1 and the amount of the binary mixed solvent was 30mL.