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Cold plasma (CP) technology has emerged as a promising non-thermal method with diverse applications in the food industry, offering solutions to key challenges related to food safety, preservation, and quality enhancement. This paper provides a comprehensive overview of the multifaceted applications of CP technology, including microbial inactivation, improvement of plant-based protein digestibility, functional property enhancement, allergenicity reduction, and bioactive compound extraction. Through an examination of recent research findings, we explore the effectiveness of CP treatment in inhibiting microorganisms in various food products, extending shelf life, and preserving nutritional and functional qualities. Additionally, we highlight the potential of CP technology to enhance the digestibility of plant-based proteins by overcoming anti-nutritional factors and modifying protein structures. Furthermore, we discuss how CP treatment can improve the functional properties of proteins and reduce allergenicity, paving the way for the development of safer and more digestible plant-based protein products. Moreover, we examine the role of CP technology in the extraction of bioactive compounds from plant materials, showcasing its ability to disrupt plant cell walls and enhance extraction efficiency. Finally, we address regulatory considerations and the future outlook for CP technology in the food industry, emphasizing the need for continued research and development efforts to optimize its use while ensuring compliance with regulatory standards. Overall, CP technology holds significant promise for revolutionizing food processing and preservation, driving innovation, and meeting the evolving needs of consumers worldwide.

Complex multilayer film structures were fabricated through a custom-built angular DC magnetron co-sputtering system. In this system, separate Cu, Al, and brass (Cu + Zn) targets were mounted on three magnetron guns, working in conjunction with a rotating substrate. This study aimed to compare the properties of films with intricate structures, which were sputtered onto glass slides and polypropylene substrates. The sputtering process was optimized using a Box–Behnken design, considering three variable operating conditions: substrate rotation speed, sputtering time, and sputtering voltage. The Analysis of Variance (ANOVA) results for film thickness and roughness, sputtered with three different materials onto glass slides and polypropylene (PP) substrates, indicated that all three independent variables significantly influenced the optimum response, with P-values less than 0.05 (

The plasma jet technique, a popular method for generating reactive oxygen and nitrogen species through an inert gas (such as Ar) mixed with air, was investigated. A plasma jet model was developed from a selection of statistical data, and the resulting NO, OH, and H2O2 concentrations were examined. The objective of the study was to establish a simple 2D plasma jet module and to mathematically understand the involved chemical reactions through the Multiphysics (finite element method) program. Determination of optimized conditions via the design of experiment method was performed. To create new responses, three nominal concentrations (NO, OH, and H2O2) were used to measure the performance of the species product. A full factorial design based on two levels, or 23 runs, with three central points and two replications was employed in the simulations using COMSOL Multiphysics 5.3a software. The main effects and interactions between the variables were identified for three main parameters: gas velocities of 40–70 m/s, plasma gaps of 10–30 mm, and simulation times of 2.8–4 ms. These parameters were selected to unravel design possibilities with external variables, which can significantly contribute to the process of designing a prototype of a cell-scaled plasma jet model.