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Vol. 23 (2020 year), No. 3, DOI: 10.21443/1560-9278-2020-23-3

Verbytskyi S. B. , Kopylova Y. V., Patsera N. N.
Design, calculation and use of the multipurpose vacuum ground meat mixer

Ground meat mixers mixing minced muscle tissue with other pre-formulated ingredients, are among the most common types of specialized meat processing equipment. The quality of minced meat, this being a food dispersed medium, including a solid, liquid and, in part, a gas phase, is determined by the dispersity and uniformity of its structure, as well as the uniformity of the distribution of components, that is, by the efficiency of the mixing process. The research carried out made it possible to theoretically substantiate the processes of mixing minced meat with the help of specialized technological equipment, including that providing vacuuming of processed food masses. A list of regulatory requirements for the structures of industrial meat mixers, which determine their technological efficiency, safety and hygiene, is given. Two main layouts of the specified equipment are described, horizontal and vertical. The design of a horizontal compact vacuum meat mixer with a coaxial double working spiral is presented. The results of work on the creation of a model range of vertical vacuum meat mixers are described, the possibility of using vertical vacuum machines for maceration by massaging medium-sized and small-sized meat raw materials is proven. It is advisable to carry out such a transformation of the equipment by replacing the working bodies of mixing with special massaging arms, these ensuring the most efficient performance of the specified technological operation. The diagram is presented, the design is described and the working cycle of the vertical vacuum machine with the geometric capacity of the working bowl is 0.15 m3 is described; the main technological and dynamic calculations of the said machine are given. The calculations made it possible to create an advanced non-metal-intensive design of a vacuum machine for mixing minced meat and/or massaging meat raw materials, which meets current requirements for equipment of the purpose. Studies of the quality of mixing of ground meat have shown that vacuuming makes it possible to consistently achieve a better density of minced meat, and for minced meat processed on an atmospheric mixer, a more uniform distribution of components was characteristic. Verbytskyi, S. B. et al. 2020. Design, calculation and use of the multipurpose vacuum ground meat mixer. Vestnik of MSTU, 23(3), pp. 224–236. (In Russ.) DOI: 10.21443/1560-9278-2020-23-3-224-236.

(in English, стр.12, fig. 3, tables. 3, ref 26, AdobePDF, AdobePDF 0 Kb)

Vol. 24 (2021 year), No. 4, DOI: 10.21443/1560-9278-2021-24-4

Voitsekhovskaya L. I., Franko Ye. V., Verbytskyi S. B., Okhrimenko Yu. I.
Effects of bioactive compounds upon the deterioration of the chilled mechanically deboned poultry meat during storage

Mechanically deboned poultry meat is a valuable protein containing raw material widely used for the production of meat products. However, it does not have a high resistance to oxidation; therefore, various antioxidants including those of natural origin are used in its composition. The article provides information on the advisability of using rosemary extract and dihydroquercetin to stabilize lipids and interrupt hydrolytic and chain oxidative processes in mechanically deboned poultry meat. The permissible storage time for mechanically deboned poultry meat using the rosemary extract and dihydroquercetin in a chilled state is 96 hours. Research has been carried out on the oxidative processes of the fatty complex of mechanically deboned poultry meat during the refrigerated storage period. Antioxidants prevent the accumulation of peroxides: in the samples with their use, the peroxide number reaches critical values on 6th–7th day of storage, without their use – on 3th day of storage. For all samples, a gradual increase in the acid number has been observed; however, for samples without antioxidants its values reach a critical level on the 4th day of storage, with the use of antioxidants – on the 7th day. The active formation of secondary oxidation products has begun from the second day of storage and reached the limit of permissible values in samples without antioxidants after 3 days of storage. In samples with antioxidants, the thiobarbituric number reaches a critical value on the 6th day. It has also been shown that the use of antioxidants contributes to the preservation of sensorial indicators (colour, odour) improving the quality of products. The efficiency of using the rosemary extract and dihydroquercetin as inhibitors of the oxidation of mechanically deboned poultry meat has been confirmed.

(in English, стр.11, fig. 3, tables. 2, ref 25, AdobePDF, AdobePDF 0 Kb)