Preparation, physicochemical and biological evaluation of quercetin based chitosan gelatin film for food packaging.
Ecofriendly chitosan gelatin (Ch ge) bio composite films containing Quercetin starch (Q) were synthesized using solution casting method. Physicochemical characteristics and mechanical properties of the resulting chitosan gelatin containing Quercetin starch films (Ch ge Q) were studied using UV, FTIR, XRD and SEM techniques. The films were also investigated for their swelling, water vapor permeability (WVP) water solubility properties. The FTIR spectra confirmed the chemical interactions between the chitosan gelatin and Q. Surface morphology of prepared film was analyzed by the SEM imaging while XRD spectra suggest the expanded crystallinity of the film with the addition of Q. The film also showed enhanced barrier property against UV rays. The reduction of water vapor permeability and increase in tensile strength while a decrease in elongation at break has been observed in the Ch ge Q film compared to Ch ge film. The antibacterial activity of Ch ge Q film against both gram positive (B. substilis) and gram negative (E. coli) bacteria suggested the Q loaded Ch ge films as more feasible antibacterial candidate especially against the strain E. coli. The antioxidant activity of the Ch ge Q film was evaluated using the DPPH and ABTS as standards and corresponded to 81.45% of DPPH and 72.2% of ABTS scavenging activities. It was observed that the film containing Quercetin starch presented superior antioxidant activity results in comparison to Ch ge film promising its application in food packaging.
Carbohydrate polymers