ISSN 2074-9414 (Print),
ISSN 2313-1748 (Online)

Grain Composites with a Complementary Amino Acid Composition in Food and Fodder

The present paper features processes of serum biotransformation. The serum was obtained from triticale extract and pea flour after protein concentrates of increased biological value had been extracted. The research objective was to obtain microbial and vegetable feed concentrates by using a composition of Saccharomyces cerevisiae121 yeast and the yeast-like fungus Geotrichumcandidum 977. The mass fraction of protein in the two-component composites was 75–80% of the dry matter. The score of the first and the second limiting amino acids (lysine and threonine) equaled 103–113%, and that of the third acid (sulfur- containing) was 71–72%. The chemical composition of the composites corresponded to the ‘Concentrates’ group; the values of their functional and technological properties were typical of concentrates from other types of grain crops. The study revealed some cultures that are able to actively develop in serum, which is a secondary product of processing the extract after protein isolation. A symbiotic ferment was prepared from the fungus Geotrichumcandidum 977 and the yeast Saccharomyces cerevisiae 121, which ensures the growth of biomass in a carbohydrate- and nitrogen-containing medium. Proteins were isolated under the action of amylase, glucoamylase, cellulose, and xylanase. The amount of high-molecular compounds (dextrins) and trioses (raffinose) released from the interaction with protein and non-starch polysaccharides decreased 2–4 times in the solution. The amount of glucose, disaccharides, xylose, and galactose increased 2–10 times, compared with the original extracts. The serum remaining after the removal of the main mass of the protein was enriched with low molecular weight mono- and oligosaccharides, which positively affected the growth of microorganisms. The mass fraction of proteins in the microbial-vegetable composite obtained from the extract with the triticale proteins and pea flour ratio of 1:5 was 15% higher than at the ratio of 1:3. Microbial and vegetable concentrates with a mass fraction of protein of 55.8–75.1% of dry matter can be used in fodder production as a protein-carbohydrate additive. Protein composites made of protein triticale and peas with a complementary amino acid composition can improve the biological value and performance of food products.
Triticale extract, pea flour, biotransformation, protein concentrate, microbial and vegetable concentrate, biological value
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How to quote?
Kolpakova VV, Ulanova RV, Kulikov DS, Gulakova VA, Kadieva AT. Grain Composites with a Complementary Amino Acid Composition in Food and Fodder. Food Processing: Techniques and Technology. 2019;49(2):301–311. (In Russ.). DOI: https://doi. org/10.21603/2074-9414-2019-2-301-311.
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