Study of amino acid composition of crushed flaxseed

Abstract

The study of large-scale industrial waste from the processing of food products of plant origin is important because it creates the prerequisites for obtaining new sources of biologically active compounds. From this point of view, linseed meal is of great interest, accumulating in significant quantities after obtaining linseed oil from oilseed varieties (Linum usitatissimum). The purpose of our study is to study the amino acid composition of flax meal and to establish the main characteristics of amino acid balance. The amino acid composition was determined on an automatic INGOS AAA 500 analyzer with Clariti – chromatography Software. The obtained experimental data allowed us to conclude that the amino acid composition of flax meal is characterized by the presence of: crude protein - 33.74%, the sum of amino acids in the hydrolysate - 28.97%, essential amino acids - 8.55%, and replaceable amino acids - 20.42%, among them, glutamic acid dominates - .8,12%, the lack of which affects the nervous and immune systems. Mathematical processing of the obtained results allowed us to evaluate the protein as a whole. The amino acid scores of essential amino acids were calculated. The limiting biological value of the protein fraction of flax meal is determined by the amino acid cystine, which has detoxifying, antioxidant, reparative, wound healing, and mucolytic effects. A comparison of the SCOR of cystine and other essential amino acids allowed us to establish the following characteristics: the amino acid composition imbalance ratio of the SCOR = 10%, the biological value of the protein BV = 90%, and the essential amino acid index EAI = 0.598. These results indicate a highly balanced amino acid composition of the protein complex in the dry extract and a close approximation to an ideal protein. DOI: 10.33184/bulletin-bsu-2026.1.5