METHODS FOR DETERMINATION OF CYCLOPROPENOID FATTY ACIDS .8. HBR TITRATION METHOD APPLIED TO SMALL SAMPLES

被引：9

作者：

BROWN, LE

机构：

[1] Southern Regional Research Laboratory, New Orleans, 70119, Louisiana

来源：

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY | 1969年 / 46卷 / 12期

关键词：

D O I：

10.1007/BF02540622

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A method is described for the determination of cyclopropenoid fatty acids in small samples of refined and crude glyceride oils and methyl esters. Approximately 0.5 g of cottonseed oil is titrated with HBr-HOAc by a stepwise procedure at 3 C and 55 C after removal of interfering substances by adsorption on activated alumina. Side reactions occurring to the extent of 15% during the titration were uniform and highly reproducible, permitting application of a correction factor. A procedure is given for preparing methyl esters on a small scale to determine the cyclopropenoid content of highly oxidized oils. © 1970 AOCS Press.

引用

页码：654 / &

共 8 条

[1] IMPROVED DIRECT TITRATION OF ALPHA-EPOXY COMPOUNDS USING CRYSTAL VIOLET AS INDICATOR [J].