PRODUCTION OF PROTEIN CONCENTRATES FROM SECONDARY PRODUCTS OF OILSEEDS PROCESSING

Abstract

The purpose of this study was to evaluate the possibility of obtaining protein concentrates from oilseed cake using enzymatic hydrolysis processes. Protein is one of the most deficient nutrients, the lack of which in the human diet can have extremely negative consequences for the body. According to the WHO report, more than 58 % of the world's population is deficient in protein. The need to provide the population with protein components is becoming particularly important, and is attracting more and more attention from researchers in this field. An important task to solve this problem is the expansion of the raw material base, the search for new technological techniques that make it possible to implement the principles of closed-loop bioeconomics and ensure a sufficient degree of efficiency of protein concentrates technology. In this context, the use of resource-saving technologies and secondary raw materials is of particular interest. The objects of this study were oilcake samples obtained after cold pressing of sunflower, hemp and flax seeds. The production of protein concentrates was performed by using two technological approaches: salt extraction and enzymatic hydrolysis using a complex of enzymes (Cellulux A + Glucavamorin). The results of the assessment of the chemical composition of the studied cakes are presented, it is established that hemp cake has the highest protein content (33.3 ± 0.4 %). The obtained results showed the effectiveness of using enzymatic hydrolysis to increase protein yield in comparison with salt extraction. Thus, the protein yield from sunflower oilcake increased by 33.1 %, from hemp oilcake – by 24.8 %, from flax oilcake – by 36.5 %. The study of the functional and technological properties of protein preparations showed higher values of the estimated parameters for protein preparations obtained by enzymatic hydrolysis.