Liquid chromatographic method for determination of triglycerides in vegetable oils in terms of their partition numbers: summary of collaborative study.

Abstract

The IUPAC Commission on Oils, Fats and Derivatives undertook development of a method and collaborative study for the determination of triglycerides in vegetable oils by liquid chromatography. Three collaborative studies were conducted from 1985 to 1987. Refinements were made in the method after the first collaborative study, and the second and third collaborative studies demonstrated that the method produces acceptable results. Materials studied were soybean oil, almond oil, sunflower oil, olive oil, rapeseed oil, and blends of palm and sunflower oils, and almond and sunflower oils. Six test samples were analyzed by 18 laboratories from 11 countries in the second study; 4 test samples were analyzed by 16 laboratories from 12 countries in the third study. The method for determination of triglycerides (by partition numbers) in vegetable oils by liquid chromatography was adopted first action by AOAC INTERNATIONAL as an IUPAC-AOCS-AOAC method.