STUDYING THE CHEMICAL COMPOSITION AND PROPERTIES OF CAVAR, MILt AND WASTE FROM THE PROCESSING OF BAIKAL OMUL

The purpose of the study is to determine the chemical composition and properties of secondary products of processing of Baikal omul (Coregonus migratorius (Georgi, 1775)). Objectives: study of the chemical composition of caviar, milt, heads and entrails of the Baikal omul; mineral composition of fish raw materials; determination of safety indicators of secondary fish raw materials. The objects of the study were secondary products of processing of Baikal omul. The chemical composition of the research objects was determined according to GOST 7636-85 in the research laboratory of the Department of Standardization, Metrology and Quality Management of the East Siberian State University of Technology and Management (East Siberian State University of Technology and Management), the mineral composition was determined in the ANO Center for Biotic Medicine (Moscow). Statistical analysis of the results was carried out using standard statistical methods using MS Excel 2013. The results of experimental studies showed that the fishing season affects the chemical composition of the insides of the Baikal omul, but does not affect the chemical composition of the heads. Thus, the work shows that the entrails of the summer fish are characterized by a lower fat content compared to the omul of the winter fish. Baikal omul caviar is characterized by a high protein and fat content (24.74 and 10.82 %, respectively). Milt contains less protein (10.10 %), but more ash (5.65 %) and moisture (71.90 %) compared to caviar. The main macroelements in the secondary products of the Baikal omul are phosphorus, calcium and potassium, and the microelements are iron, manganese and copper. It has been established that the entrails and caviar of the Baikal omul contain more calcium compared to milt, but the milt is superior to the entrails and caviar in terms of phosphorus and potassium content. Caviar is characterized by a higher content of magnesium, and the entrails have a higher content of zinc, copper and iron. In terms of the content of toxic elements, the milt, caviar and entrails of the Baikal omul met the requirements established by the TR CU 021/2011.