氯仿、乙醇作为溶剂测定大豆磷脂酸值Determination of the acid value of soybean lecithin with the mixed solvent consisting of chloroform and alcohol
薛文成,李娜,孟冬娅,石富成
XUE Wen-cheng 1; LI Na 2; MENG Dong-ya 1; SHI Fu-cheng 1 (1.The General Hospital of the Shenyang Militory Region;
摘要(Abstract)：
目的建立一种测定各种大豆磷脂酸值的方法。方法用氯仿乙醇 ( 2∶1 ,V∶V)作为溶剂溶解大豆磷脂后 ,用 0 1mol/L氢氧化钠滴定 ,并同药典法进行了对比。结果本方法的精密度RSD为0 3%～ 1 8% ,《中华人民共和国药典》法为 0 9%～ 7 3% ;本方法的回收率为 96 5 %～ 98 5 % ,《中华人民共和国药典》法为 78 5 %～ 97 0 %。结论用氯仿乙醇 ( 2∶1 ,V∶V)作为溶剂可适用于各种磷脂酸值的测定
Objective To develop a simple, rapid, and accurate method to determine the acid value of soybean lecithins. Methods Soybean lecithins were dissolved with the mixed solvent consisting of chloroform and alcohol, and titrated with 0.1mol/L sodium hydroxide, then the results were compared with the results of the pharmacopoeia method. Results The precision RSD and recovery of the present method were 0.3%～1.8% and 96.50%～98.48%, respectively; the precision RSD and recovery of the pharmacopoeia method were 0.9%～7.3% and 78.5%～97.0%, respectively. Conclusions The mixed solvent consisting of chloroform and alcohol is suitable for the determination of the acid value of any soybean lecithin.
关键词(KeyWords)：
大豆磷脂;酸值;氯仿;乙醇;测定
soybean lecithin; acid value; chloroform; alcohol; determination
基金项目(Foundation):
作者(Authors):
薛文成,李娜,孟冬娅,石富成
XUE Wen-cheng 1; LI Na 2; MENG Dong-ya 1; SHI Fu-cheng 1 (1.The General Hospital of the Shenyang Militory Region;
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