Publication date: June 2017
Source:International Journal of Biological Macromolecules, Volume 99
Author(s): Mohammad Mehdi Marvizadeh, Nazila Oladzadabbasabadi, Abdorreza Mohammadi Nafchi, Maryam Jokar
To exploring a nano-packaging materials for using as coating or edible films, tapioca starch/gelatin/nanorod ZnO (ZnON) bionanocomposites were prepared via solution casting technique. The effects of nanofiller addition on the mechanical, physicochemical, and crystalline structures, as well as the barrier properties of bionanocomposite films were investigated. X-ray diffraction analysis showed that the bionanocomposite film incorporated with ZnON at a concentration of 3.5% w/w exhibited high intensity peaks compared with control samples. Results of UV–vis spectra analysis showed that incorporation of ZnON into the films can absorb the whole UV light. Tensile strength of the films was increased from 14 to 18MPa whereas elongation at breaks decreased from 18 to 8 percent and oxygen permeability decreased from 151.03 to 91.52cm3μm/(m2–day) by incorporation of 3.5% ZnON into biopolymer matrix. In summary combined starch/gelatin films supported by ZnON showed better properties compared to starch or gelatin alone. Thus, the bionanocomposite films can be used in food, medicine, and pharmaceutical packaging.
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