Background
Influenced by factors such as consumer health, environmental protection, and safety principles, the food industry has been seeking to reduce its reliance on traditional fungicides. Essential oils (EOs) are the secondary metabolites derived from plants in nature. Interest in food packaging of bioactive EOs with clean labels has gradually arisen. However, the adverse effects of EOs in solubility, volatility, and photothermal instability limited their application in food packaging. Therefore, modification strategies for EOs are the key to solving these problems.
Scope and approach
This review outlined the modification methods of EOs for food packaging. Specifically, we highlighted the research progress of methods based on the modification of EOs, including nanoemulsion, Pickering emulsion, microencapsulation, inclusion complexation, solid lipid nanoparticles, chemical modification, electrospinning, and 3D printing. Then, we summarized the function of EOs-based active packaging and smart packaging in food preservation and food quality monitoring. Furthermore, the antibacterial mechanism of EOs action before and after modification, performance evaluation, comparative analysis, current challenges and future trends are discussed.
Key findings and conclusions
The shortcomings of EOs can be addressed through physical and chemical methods, and their performance can be enhanced for use in food packaging. When modified by these methods in food packaging, EOs can offer antioxidant and antimicrobial properties, the adverse flavor has been reduced, the water solubility can be improved, and enhanced thermal stability, while also acting as active agents for food preservation, and combine pigments when necessary for food freshness monitoring. Challenges remain in the analysis of the antibacterial mechanism of EOs-based products, improving yield and activity, as well as achieving long-term release performance and adhesion with packaging matrices. In the future, AI and modification technologies will be integrated to focus on the development of multifunctional intelligent packaging tailored for both ambient environments and cold-chain logistics, which aims to facilitate the precise release of EOs suitable for environmental changes. These advances will improve efficiency, lower costs, and easier operation.
扫码关注我们
求助内容:
应助结果提醒方式:
