Production and characterization of chitosan based edible films from Berberis crataegina's fruit extract and seed oil

Abstract

Chitosan-based edible films were prepared by supplementing Berberis crataegina DC.'s seed oil and fruit extract into chitosan matrix. The produced films have characterized both physiochemically (SEM, DSC, FT-IR, UV-vis, contact angle and mechanical analysis) and biologically (anti-quorum sensing, antimicrobial and antioxidant). Chitosan-fruit extract film revealed higher thermal stability, antioxidant, antimicrobial and anti-quorum sensing activity compared to other films. Addition of B. crataegina's seed oil and fruit extract into the chitosan film notably decreased the UV-vis transmittance but ameliorate the tensile strength values. Hydrophobicity of the chitosan-seed oil film was observed to be higher (92.64 +/- 4.17) than chitosan-control film (84.67 +/- 1.50) while chitosan-fruit extract film exhibited slightly lower hydrophobicity (73.82 +/- 7.42) than chitosan film. The overall high thermal stability, antioxidant and antimicrobial activity of chitosan-fruit extract film revealed that B. crataegina's fruit extract can be used as an effective ingredient for the production of the edible film with enhanced physicochemical and biological properties.