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Kurkotilo V. N., Vasilieva Zh. V.
Resource-saving recycling technology of lipid-containing waste of the fishing industry
DOI: 10.21443/1560-9278-2017-20-3-609-618
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Abstract. Nowadays the resource component of fish waste is underutilized, while it has unique properties of fish raw material. The topical area of research is the search for new technologies for processing waste to produce fish oil as a valuable source of polyunsaturated fatty acids, fat-soluble vitamins and other biologically active substances. In the work the technology of enzymatic hydrolysis of fish wastes has been tested and compared with the traditional thermal technology of obtaining fat from fish waste. The object of the study has been frozen waste from the herring processing. The optimal parameters of obtaining fish oil from processing wastes has been determined by simulating the process by the method of mathematical planning of experiment using orthogonal central composite plan of the second order for two factors. The variation of the factors of traditional thermal processing has been carried out in the temperature range of 60 ± 10 °C for 120 ± 20 min. Enzymatic hydrolysis has been held using the enzyme preparation of proteolytic action Protosubtilin G3x (Protosubtilin G3x) in the range factors of 0.20 ± 0.05 g/kg dose of enzyme for 80 ± 20 min at the optimal temperature of hydrolysis. Organoleptic indicators of fat (appearance, color, smell, taste, transparency) have been determined in accordance with the requirements of state standards. The derived lipid drug has been subjected to research on indicators of safety in accordance with the requirements of Technical regulations of the Customs Union "On safety of food products". The safety performance of the obtained samples of fat (peroxide and acid numbers) has been determined by the standard methods. The constructed mathematical models contribute to optimizing the processing of fish waste. Comparison of the quality and safety indices of the obtained fish oil preparations has allowed substantiate the advantages of enzymatic processing of fish waste.
Printed reference: Kurkotilo V. N., Vasilieva Zh. V. Resource-saving recycling technology of lipid-containing waste of the fishing industry // Vestnik of MSTU. 2017. V. 20, No 3. P. 609-618.
Electronic reference: Kurkotilo V. N., Vasilieva Zh. V. Resource-saving recycling technology of lipid-containing waste of the fishing industry // Vestnik of MSTU. 2017. V. 20, No 3. P. 609-618. URL: http://vestnik.mstu.edu.ru/v20_2_n72/12_Kurkotilo_609_618.pdf.
