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Article

Improvement of the UV Barrier and Antibacterial Properties of Crosslinked Pectin/Zinc Oxide Bionanocomposite Films

1
Department of Food Science and Technology, Keimyung University, Daegu 42601, Korea
2
Department of Food and Nutrition, Kunsan National University, Gunsan 54150, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Evgenia G. Korzhikova-Vlakh
Polymers 2021, 13(15), 2403; https://doi.org/10.3390/polym13152403
Received: 2 July 2021 / Revised: 19 July 2021 / Accepted: 19 July 2021 / Published: 22 July 2021
(This article belongs to the Special Issue Advances in Bio-Based and Biodegradable Polymeric Composites)
Pectin-based antibacterial bionanocomposite films were prepared by crosslinking with calcium chloride (CaCl2) and mixing with zinc oxide nanoparticles (ZnO-NPs) at various concentrations (0.5%, 1%, and 1.5% w/w, based on pectin). Crosslinking with 1% CaCl2 significantly (p < 0.05) improved the tensile strength of the pectin films, although their elongation at break was decreased. The UV-light barrier property of the pectin/ZnO bionanocomposite films was significantly (p < 0.05) improved with increasing ZnO-NP concentrations. In addition, the bionanocomposite films incorporating 1.5% ZnO-NPs showed excellent antibacterial effects against both Escherichia coli and Staphylococcus aureus, inhibiting over 99% of the bacteria. Therefore, the developed crosslinked pectin/ZnO bionanocomposite films show great potential as active packaging materials with excellent UV-blocking and antibacterial properties. View Full-Text
Keywords: antibacterial; bionanocomposite; pectin; zinc oxide; crosslinking antibacterial; bionanocomposite; pectin; zinc oxide; crosslinking
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MDPI and ACS Style

Hari, K.D.; Garcia, C.V.; Shin, G.-H.; Kim, J.-T. Improvement of the UV Barrier and Antibacterial Properties of Crosslinked Pectin/Zinc Oxide Bionanocomposite Films. Polymers 2021, 13, 2403. https://doi.org/10.3390/polym13152403

AMA Style

Hari KD, Garcia CV, Shin G-H, Kim J-T. Improvement of the UV Barrier and Antibacterial Properties of Crosslinked Pectin/Zinc Oxide Bionanocomposite Films. Polymers. 2021; 13(15):2403. https://doi.org/10.3390/polym13152403

Chicago/Turabian Style

Hari, Karina D., Coralia V. Garcia, Gye-Hwa Shin, and Jun-Tae Kim. 2021. "Improvement of the UV Barrier and Antibacterial Properties of Crosslinked Pectin/Zinc Oxide Bionanocomposite Films" Polymers 13, no. 15: 2403. https://doi.org/10.3390/polym13152403

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