Abstract:?

Carboxymethyl? chitosan? (CMCh)-peptide? conjugates? were? produced? by? grafting?CMCh? with? peptides? from? hemp? seed,? maize? and? casein.? The? nanoemulsions?stabilized? by? these? conjugates? had? smaller? droplet? size? and? better? emulsifying?

properties. Nanoemulsions stabilized by conjugates were used to develop active films?containing? Camellia? essential? oil? and? the? effect? of? conjugation? on? physicochemical??properties of resulting films was evaluated. Water vapor and oxygen barrier properties,?tensile strength, flexibility, and temperature of endothermic peak increased 6.6-19.8%?and? 6.9-27.2%,? 40.1-96.6%,? 61.4-83.3%? and? 7.8-18.5%,? respectively? when? the?CMCh-peptide? conjugates? were? used? to? emulsify? the? essential? oil.? The? conjugation?helped to form compact structure. All of the films containing essential oil emulsions?stabilized? by? conjugates? showed? the? ability? to? extend? the? shelf-life? of? blueberry? by?maintaining the firmness, reducing the weight loss and slowing down the formation of?soluble solids.?