Abstract:
Fruits and vegetables preservation is particularly important, since they are extremely perishable and have short shelf life. At present, the commonly used methods are cryopreservation and preservative treatment. Film preservation has attracted much interest due to its low cost and good effect. However, common chemical preservatives such as dibromotetrachloroethane and triazoles have certain harm against human health. Forestry biomass resources are environment-friendly and sustainable, so the preserving agent formulated with some forestry biomass has been widely applied. The applications of polysaccharides, shellac, rosin and other forestry biomass in fresh-keeping coating preservation of fruits and vegetables are summarized in this paper. The methods of coating film are discussed, and the prospects for the future development of the preservation of modified biomass-based coating film are proposed.