Food grade chitosan preservative for fruits and vegetables

Food grade chitosan preservative for fruits and vegetables

Chitin is a kind of polymer compound existing in animal carapsid, chitosan is the deacetylation product of chitin, is the only kind of polysaccharide discovered so far, it has strong bacterial inhibition, biodegradation, adsorption, high moisture. Chitin was extracted from the carapace of deep-sea crab and shrimp.

Using chitosan coating preservation, the film has the permeability, water resistance, can be all kinds of gas molecules to increase penetration resistance, formed a kind of micro air environment, is the fruit and vegetable group increased, the carbon dioxide content in lower oxygen content, inhibit the respiration metabolism and moisture loss, slow down the fruit and vegetable organization and structure of aging, which effectively prolongs the postharvest life. That is to say, chitosan acts as a selective semi-permeable membrane, preventing the circulation of oxygen and water. At the same time inhibit bacterial reproduction, improve fruit and vegetable gloss and sensory quality.