[Identification of cholesterol esters using topological criteria].

Cholesterol esters obtained from biological sources were separated using highly-effective liquid chromatography. Identification of individual molecular forms of these esters was carried out by means of linear correlation between the period of their retaining and the topological indices by Balaban and Randich, describing the structure of descriptors (acyl group) in cholesterol esters.

[Identification of nutritious vegetable oils by their triglyceride composition].

Three criteria have been suggested for the identification of food vegetable oils: the ratio of the summary area of triglyceride peaks and the summary area of the reference peaks; a set of peaks of critical pairs of oil triglycerides and their relationship expressed as the percent of the maximum peak. To prove the correctness of the identification a previously known oil is analyzed and its characteristics are compared to those of the oil under study. A mixture of saturated triglycerides with equivalent carbon numbers 30-56 is used as a reference one.