Hari Karina Dyasti, Garcia Coralia V, Shin Gye-Hwa, Kim Jun-Tae
Department of Food Science and Technology, Keimyung University, Daegu 42601, Korea.
Department of Food and Nutrition, Kunsan National University, Gunsan 54150, Korea.
Polymers (Basel). 2021 Jul 22;13(15):2403. doi: 10.3390/polym13152403.
Pectin-based antibacterial bionanocomposite films were prepared by crosslinking with calcium chloride (CaCl) and mixing with zinc oxide nanoparticles (ZnO-NPs) at various concentrations (0.5%, 1%, and 1.5% , based on pectin). Crosslinking with 1% CaCl significantly ( < 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 ( < 0.05) improved with increasing ZnO-NP concentrations. In addition, the bionanocomposite films incorporating 1.5% ZnO-NPs showed excellent antibacterial effects against both and , 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.
通过与氯化钙（CaCl）交联并与不同浓度（基于果胶为0.5%、1%和1.5%）的氧化锌纳米颗粒（ZnO-NPs）混合，制备了基于果胶的抗菌生物纳米复合薄膜。用1% CaCl交联显著（<0.05）提高了果胶薄膜的拉伸强度，尽管其断裂伸长率有所降低。随着ZnO-NP浓度的增加，果胶/ZnO生物纳米复合薄膜的紫外线阻隔性能显著（<0.05）提高。此外，含有1.5% ZnO-NPs的生物纳米复合薄膜对革兰氏阳性菌和革兰氏阴性菌均表现出优异的抗菌效果，能抑制超过99%的细菌。因此，所制备的交联果胶/ZnO生物纳米复合薄膜作为具有优异紫外线阻隔和抗菌性能的活性包装材料具有巨大潜力。
