Mathematical model of the process of applying a chitosan layer to the surface of pseudo-encapsulated fish feed pellets
K. V. Mishinev, A. N. Ostrikov, M. V. Kopylov, A. S. Muraviev
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Source: Crossref
Published: Jun 30, 2026
DOI: 10.20914/2310-1202-2026-2-28-35
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Research conducted on the development of pseudo-encapsulated compound feed using vacuum deposition of fat components onto the surface of extruded pellets and subsequent application of a protective chitosan coating allowed us to identify the most significant factors influencing oil retention and specific energy consumption. It was found that oil retention depends on the vacuum level in the coating machine's working chamber, the diameter of the extruded pellets, and the duration of the main process steps. Specific energy consumption is significantly affected by the fat content of the extruded pellets, the rotational speed of the coating machine's paddle shafts, and the filling level of the coating machine's working chamber. To assess the significance of the influence of the studied factors, regression equations were obtained because of mathematical processing. These equations describe the dependence of the oil retention coefficient on the vacuum value in the working chamber of the coating machine, the diameter of the extruded granules, and the duration of the main operations of the technological process, as well as the value of specific costs on the fat content in the extruded granules, the rotation frequency of the paddle shafts of the coating machine, and the degree of filling of its working chamber. The adequacy of the regression equations was confirmed by the significance level of the equation coefficients (p > 0.05) and the value of the determination coefficients (R2 > 0.99). Graphic dependencies were constructed in the form of two-parameter dependencies, which allowed for an in-depth analysis of the response surface and visualization of the two-factor influence of the obtained regression models. The obtained regression dependencies were used in the engineering calculation methodology for a coating machine for the production of pseudo-encapsulated fish feed.
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