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Polymers 2018, 10(10), 1172;

Preparation and Characterization of Potato Starch Film with Various Size of Nano-SiO2

Department of Food Science and Engineering, Shandong University of Technology, Zibo 255000, China
Author to whom correspondence should be addressed.
Received: 28 September 2018 / Revised: 16 October 2018 / Accepted: 19 October 2018 / Published: 22 October 2018
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The various sizes (15, 30, 80, and 100 nm) of nano-SiO2/potato starch films were synthesized and characterized. The gas permeability, antibacterial properties, and mechanical properties of the films were evaluated to their potential for application as food packaging materials. Results indicated that the 100 nm nano-SiO2 was well dispersed in the starch matrix, which induced an active group on the surface of 100 nm nano-SiO2 adequately combined with starch macromolecule. The water resistance and mechanical properties of the films were improved with the addition of nano-SiO2. Notably, resistance to ultraviolet and thermal aging was also enhanced. The nano-SiO2/potato starch films were more efficient against Escherichia coli (E. coli) than Staphylococcus aureus (S. aureus). Remarkable preservation properties of the films packaging the white mushrooms were obtained, with those of the 100 nm films considered superior. This study can significantly guide the rational choice of the nano-SiO2 size to meet the packaging requirements of various agricultural products. View Full-Text
Keywords: potato starch films; nano-SiO2; antibacterial property; size potato starch films; nano-SiO2; antibacterial property; size

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Zhang, R.; Wang, X.; Cheng, M. Preparation and Characterization of Potato Starch Film with Various Size of Nano-SiO2. Polymers 2018, 10, 1172.

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