Nanoreinforcement of Pectin Film to Enhance its Functional Packaging Properties by Incorporating ZnO Nanoparticles

Abstract:

The main objective of this study was to enhance functional packaging properties of pectin film by using zinc oxide nanoparticles (ZnO-NPs) as nanoreinforcing agent. Pectin/ZnO bio-nanocomposite films were fabricated at 4 levels of ZnO-NPs, i.e., 0.5, 1.0, 2.0 and 5.0% (w/w). The effects of ZnO-NPs incorporation on improving the mechanical properties and water resistance of the films were investigated. ZnO-NPs were successfully incorporated into pectin films by nanodispersion technique followed by casting method. The presence of ZnO-NPs inside pectin films was observed clearly by SEM. The improvement in tensile strength could be achieved with ZnO-NPs incorporation without obvious loss in elasticity. Potential antimicrobial activity of pectin-ZnO nanocomposite films was proved in the absence of mold after exposing them at 97% RH and room temperature for 14 days, whereas the growth of mold had been observed in pure pectin film after 3 days of exposure. In terms of film transparency, the significant change in film opacity was only found in the film prepared with 5% of ZnO. Results suggested that it would be favorable to prepare pectin/ZnO nanocomposite film by using ZnO-NPs at the amount of 2% (w/w) in the future work.

• Periodical: Advanced Materials Research (Volume 845)
• Pages: 451-456
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.845.451
• Online since: December 2013
• Authors: Nugraha Edhi Suyatma*, Yutaka Ishikawa, Hiroaki Kitazawa
• Keywords: Bio-Nanocomposite Film, Nanoreinforcement, Pectin Film, ZnO Nanoparticles

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