Studies of the effect of zinc pyrithione on the active properties of film ecomaterials

Today, the problem of prolonging the shelf life of food systems is relevant within the framework realization of the 2030 Agenda, namely related to Goal No. 2, which aims to eliminate hunger, ensure food security and improve nutrition, promote sustainable agricultural development, as well as the Strategy of Scientific and Technological Development of the Russian Federation. One of the possible ways to solve this problem may be the development and implementation of active organic packaging for prolonging the shelf life of food systems. The purpose of this study was to study the effect of embedding Zinc pyrithione at different application concentrations from 0.1 to 0.5 % on the active properties of future organic packaging based on rice starch. As part of the study, 5 samples and a control sample were obtained. The samples were evaluated according to an expanded range of quality indicators (antioxidant and fungicidal activity). The obtained research results suggest a positive effect of embedding zinc pyrithione at different concentrations of 0.1 to 0.5 % in rice starch plasticized matrix with the formation of active properties. The maximum antioxidant and fungicidal activity was detected in sample 5 at an applied zinc pyrithione concentration of 0.5 %. The maximum growth retardation zone of moldy fungi Aspergillus flavus was (22.33 ± 0.5) mm with an antioxidant activity of (65.59 ± 0.2) % (DPPH method). The data obtained will be useful for designing and creating water-soluble active coatings and packages for prolonging the shelf life of food systems.