Chitosan-based functional coatings for postharvest processing of tomatoes

The review article includes information on the use of coatings, both from chitosan itself and in combination with other polysaccharides and functional compounds, for postharvest processing, mainly of tomatoes, to extend the shelf life of harvested produce. During harvesting of fruits and vegetables, losses due to fungal infection can be as high as 50%. To prevent yield losses and preserve fruit quality, various methods of postharvest treatment are used. Currently, the most effective means used to control postharvest diseases are synthetic fungicides, but their uncontrolled use negatively affects human health and the environment. Recently, there has been a continuing trend to increase the use of natural antimicrobial agents. Such natural compounds can be chitin and chitosan, they are renewable, biodegradable, low toxicity and safe for consumers and the environment. The film-forming ability of chitosan and its antimicrobial, antioxidant properties are important for obtaining functional coatings for postharvest processing of fruits.