عنوان مقاله [English]
Much interest is currently drawn to edible films, from proteins, polysaccharides, fats, or their combination. With a polymeric nature, gelatin has a good film-forming capability and replacing synthetic plastics with naturally degradable films is the perfect solution for minimizing undesirable and harmful effects of synthetic waste. The main problem is their fairly high hydrophilic and poor mechanical properties compared to conventional synthetic films. In the present study, films of fish gelatin with ratios of 15%, 10%, 5% and 20% to carboxy methyl cellulose were prepared by casting at 85 °C. The effects of different concentrations of carboxy methyl cellulose on water vapor permeability (WVP), water absorption capacity (WAC) and solubility were assessed. The results obtained showed that increasing concentrations of carboxy methyl cellulose reduced WVP and increased WAC and solubility of gelatin films. Generally, the addition of carboxy methyl cellulose improves transparency and physicochemical properties of gelatin films, and facilitates the use of these biopolymers in packaging industries.
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