Cryogenic Electrochemical Technology for Increasing the Safety and Shelf Life of Fish
https://doi.org/10.36107/hfb.2019.i3.s1
Abstract
The usage of electrochemically activated solutions (ECA) in systems formed from ice crystals with bactericidal properties is becoming increasingly important. It is an advanced technology for the effective cooling and storage of aquatic products. In this research the effect of this technology on the quality and extension of shelf life of fresh fish - rainbow trout during storage in a refrigerator (0-2 ° C) was studied. During a series of experiments, fish samples were placed in containers with ice formed on the basis of ECA solution and tap water and a rational storage mode (processing method, time) was established depending on microbiological, organoleptic, and physicochemical parameters. As a result of the study, it was shown that after a day of storage in bactericidal ice, a decrease in bacterial contamination was observed in the experimental fish samples in comparison with the control samples. The total shelf life of trout in the special environment, during which the number of colonies of microorganisms was acceptable, was 7 days. In the control samples, after this period, a continuous growth of colonies was observed, which indicates a total contamination of the fish. By cooling fresh fish with bactericidal ice, it was possible to reduce the total microbial number by 1.5-2 times. Cooling and storage in an environment with an ECA solution led to a change in the colour of the skin of the trout (lighter than the original) and the presence of a slight smell of chlorine. Fish stored in ordinary ice practically did not change colour but acquired the smell of stale fish. As a result of the study, it was shown that the usage of ECA solution is an effective, environmentally friendly and cost-effective technological method for implementation in order to extend the freshness of fish, improve the quality and safety.
About the Author
O. A. Suvorov
Moscow State University of Food Production
Russian Federation
Russian Federation
Oleg A. Suvorov
11 Volokolamskoe highway, Moscow, 125080
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Review
For citations:
Suvorov O.A. Cryogenic Electrochemical Technology for Increasing the Safety and Shelf Life of Fish. Health, Food & Biotechnology. 2019;1(3):84-91. (In Russ.) https://doi.org/10.36107/hfb.2019.i3.s1
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