Abstract: Automated food packaging systems have significantly improved efficiency and consistency in the food industry, but preserving nutritional integrity remains a critical challenge. This paper explores mechanical engineering solutions designed to address this issue, focusing on advanced sealing technologies, controlled atmosphere packaging (CAP), and temperature regulation systems. Advanced sealing methods, including vacuum, heat, and ultrasonic sealing, are examined for their effectiveness in protecting food from environmental factors that contribute to nutrient degradation. CAP, which adjusts gas compositions within the packaging, is discussed as a means to slow down metabolic processes and extend shelf life. Temperature regulation systems, such as refrigerated and cryogenic cooling technologies, are analyzed for their role in maintaining optimal conditions to prevent nutrient loss. The integration of automation and real-time monitoring technologies enhances these solutions by providing precise control and adjustments to packaging environments. This study highlights the critical role of mechanical engineering innovations in developing packaging systems that not only improve food safety and extend shelf life but also preserve the nutritional quality of packaged foods. These advancements represent a significant step forward in optimizing food packaging processes for better health outcomes and industry efficiency.