Ferulic Acid as a Sustainable and Green Crosslinker for Biopolymer‐Based Food Packaging Film

Abstract This review explores the potential of ferulic acid as a crosslinking agent in the development of biopolymer‐based packaging films. Ferulic acid, a phenolic compound found in various natural sources, exhibits strong antioxidant properties and the ability to enhance the mechanical strength and barrier properties of biopolymer films. The review covers its chemistry, sources, and methods for isolation, emphasizing its application in crosslinking various biopolymers, including polysaccharides such as starch, cellulose, chitosan, and pectin, as well as proteins like gelatin. The crosslinking process improves the properties of these biopolymers, making them suitable for sustainable packaging solutions. The study further discusses the integration of ferulic acid with biopolyesters to create films and coatings aimed at food preservation, providing an eco‐friendly alternative to conventional plastic packaging. The use of ferulic acid in enhancing the shelf life and safety of packaged food products through its incorporation in biopolymer films is highlighted, showcasing the dual role of this compound in both film development and food preservation. This comprehensive review offers insights into the versatility and efficacy of ferulic acid‐based crosslinked biopolymer films in advancing sustainable packaging technology, with a focus on practical applications for food safety and environmental sustainability.