Yakovliev O. Improvement of the process of salting fish ocean fishing by ultrasound and its apparatus execution

The thesis is devoted to the intensification of the process of salting fish ocean fishing by ultrasound. Theoretically substantiated the possibility of salting process intensification by ultrasound. The mathematical model of the effect of ultrasonic treatment on the process of internal mass transfer during salting. Developed a mathematical model of the effect of ultrasonic treatment on the internal process of mass transfer in salting fish. Obtained a refined formula for the calculation of the duration of the salting in the conditions of ultrasound exposure, taking into account the individual characteristic size of the fish (overall size and the ratio of volume to surface area), the mass transfer coefficient and diffusion coefficient. Studied the kinetics of diffusion of NaCl in fish in conditions of brine salting. The experimental results revealed that the indicators of quality fish, cured with the use of ultrasonic treatment, comply with relevant regulatory requirements by organoleptic and microbiological indicators. Defined rational parameters of the process of salting fish with the help of ultrasonic treatment duration of 10...15 min and a frequency of 30 kHz. Developed the design of the device for salting fish using ultrasound, designed its main characteristics and parameters developed technical description and operating instructions of the proposed apparatus.