Qualitative and quantitative indicators of milk on the content of sterins at its false by vegetable fats

The article presents the results of studies of milk on the content of sterols of animal and vegetable origin. The analysis of chromatograms of standard and non-standard milk samples is presented. In all milk samples, peaks of zoosterol - cholesterol with a fractional content of 79 % were identified. Non-standard milk samples additionally revealed peaks identifying phytosterols - campester- ol, stigmasterol and P-sitosterol with their 4,4 content; 2,9 and 13,6 %, respectively. Sterol fractions of milk were studied by gas chromatography with mass detection. The method allows for the qualitative identification of phytosterols in a data library with subsequent quantitative determination. The method is sufficiently accurate and reliable for the determination of sterols in milk samples.