Updated insights into steady-modified anthocyanin food packaging: Novel strategies, characterization, application and...

Rising attentions on food safety and quality as well as disadvantages of conventional plastic food packaging motivates extensive study in anthocyanin-based food packaging. However, anthocyanins are susceptible to environmental conditions, resulting in easily-degradable properties of anthocyanin-based food packaging. Therefore, steady-modified anthocyanin-based food packaging are highly demanded for further deeper application. Based on this, thorough insights into steady-modified anthocyanin-based food packaging are provided in the current review. The degradation phenomenon and factors affecting stability of anthocyanin-based film during long-term storage were investigated. Novel steady-modification strategies to improve film stability were systemically summarized. Also, their effects on film physical (structure/mechanical/hydrophobic) properties and functional (pH-responsive, antioxidant and antibacterial) properties were explored. Meanwhile, application cases of steady-modified anthocyanin-based film regarding freshness monitoring and quality maintenance were comprehensively discussed. Finally, major challenges and future prospects were also proposed for further development.