Improved Physicochemical Properties of Tapioca Starch / Bovine Gelatin Biodegradable Films with Zinc Oxide Nanorod


Food Biopolymer Research Group, Food Science and Technology Department, Damghan Branch, Islamic Azad University, Damghan, Semnan, Iran


The effects of zinc oxide nanorod (ZnO-N) incorporation on thephysicochemical properties of tapioca starch / bovin gelatin composite film such as water absorption capacity (WАC), water solubility and permeability to water vapour (WVP) were investigated. In this search, ZnO-N was homogenized by sonication and added into tapioca starch / bovine gelаtin dispersions аt different concentrations (e.g. 0.5, 2, and 3.5% w/w total solid). Incorporation of 3.5% of nanoparticles to tapioca starch / bovine gelatin films decreased the permeability to water vapor by 18%. Water absorption capacity and Solubility of the films were decreased by increasing the ZnO-N contents. These properties suggest that ZnO-N has the potential as filler in starch /gelatin-based films for using in pharmaceutical and food packaging industries


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