Preparation and characterization of active films based on chitosan incorporated tea polyphenols

Combined Effect of Cinnamon Essential Oil and Pomegranate Peel Extract on Antioxidant, Antibacterial and Physical Properties of Chitosan Films

“…The high values of opacity indicate lower transparency and higher degree of opacity (Wang et al, 2013). (Table 1), which could be caused by the presence of polyphenols in films (Yuan et al, 2015) Water Vapor Permeability Chitosan films have been proven to present moderate oxygen barrier properties and good carbon Mean values in each column with different lower case letters are significantly different (P < 0.05).…”

“…Although chitosan has a great potential for applications in antimicrobial packaging, it has no significant antioxidant (Wang et al, 2013) and ambiguous antimicrobial activity (Ruiz-Navajas et al, 2013;Ojagh et al, 2010). Therefore, AA agents were incorporated into the chitosan film to expand its applications in food active packaging (Moradi et al, 2012).…”

Gelatin capsule waste: new source of protein to develop a biodegradable film

“…The film opacity was calculated dividing the absorbance values (nm) by the film thickness (mm). All determinations were performed in triplicate [11] .…”

“…If these materials are able to absorb UV light, they could be used to package and extend the shelf life of fatty foods, which are susceptible to the oxidative degradation catalyzed by UV rays [35] . In the opacity, higher values indicate less transparency and high opacity [11] . According to the Table 2, when analyzed in the UV-visible (500 nm) region, the films showed low values, indicating that they had low absorption, which indicates greater transparency and lower opacity.…”

Advances of Chitosan-based Active Films in Food Packaging

“…Since then, researchers have began to study on chitosan. Chitosan is rich in nature reserves, after cellulose [4]. According to reports that the first films and coatings appear in twelfth or thirteenth centuries in China [8].…”