Purpose. To determine the content of fat and fatty acids of total lipids in fat and oil production secondary products: in pressed powder, hydrofuse, bleaching and adsorption clays and deodorization distillate. Methods. In the process of the research, general scientific methods were used: deduction, scientific hypothesis and abstraction. For the laboratory research, the following methods were used: zootechnical analysis, liquid chromatography, spectrophotometry, titrimetry. Methods of variation statistics were used to process the obtained experimental results. Results. Indicators of lipid and fatty acid composition of by-products of fat and oil production were determined. It has been established that wastes of fat and oil production are highly nutritious products: the content of crude fat in pressed powder is 65.45%, in the hydrofuse – 68.11%, bleaching clay – 66.99% and adsorption clays – 27.05%; contains essential fatty acids – linoleic (from 0.52 to 57.77%) and α-linolenic acid (from 0.01 to 0.02%). The total amount of polyunsaturated fatty acids in pressed powder is 57.79%, in the hydrofuse – 51.19%, in bleaching clay – 0.53%, in adsorption clays – 11.6%, and in deodorization distillate – 3.94% of the total amount of acids. Among the group of saturated fatty acids, all these products contain palmitic (from 0.88% to 5.91%), stearic (from 2.80% to 12.01%) and arachidic (from 0.07% to 8.43%) acid. The amount of saturated fatty acids in the pressed powder is 8.66%, in the hydrofuse – 8.87%, in bleaching clays – 9.96%, in adsorption clays – 8.07% and in deodorization distillate – 76.9% of the total acids. Conclusions. Wastes of fat and oil production in their composition contain a significant amount of crude fat, most of the fatty acids are represented by oleic and linoleic acid, which characterizes their quality and biological value as a feed additive for feeding animals and poultry.
Changes in the Oil Production and Fatty Acid Composition in Chlorella vulgaris
