Abstract
Food substances are highly susceptible to spoilage due to their inherent properties and environmental factors during transit from farm to fork. Hence, it is necessary to protect the food from various factors by safeguarding it in proper packaging. The packaging materials include flexible pouches and rigid containers, and they have their own merits and demerits. Most of the packaging materials used nowadays are polymer-based, which takes a long time to degrade and poses a dangerous threat to terrestrial and aquatic life. Edible packaging evolved to be an alternative to conventional packaging due to its natural biopolymers, which are hyper-degradable and consumable. They exhibit improved barrier and organoleptic properties, mass transfer selectivity, and reduced migration properties of packaging ingredients into food and environmental pollution. They are classified as coatings, films, and pouches and can be used as either food wraps or heat-sealed into pouches that are applied directly on the food surface. Thus, edible packaging is a potential approach in the food packaging industry. This review explains in detail the biomaterials used for film preparation, various processes involved in film formation, different coating methods, and recent applications in the area of eco-friendly edible packaging.
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