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

被引：48

作者：

Hari, Karina Dyasti ^{[1
]}

Garcia, Coralia, V ^{[1
]}

Shin, Gye-Hwa ^{[2
]}

Kim, Jun-Tae ^{[1
]}

机构：

[1] Keimyung Univ, Dept Food Sci & Technol, Daegu 42601, South Korea

[2] Kunsan Natl Univ, Dept Food & Nutr, Gunsan 54150, South Korea

来源：

POLYMERS | 2021年 / 13卷 / 15期

关键词：

antibacterial; bionanocomposite; pectin; zinc oxide; crosslinking; COMPOSITE FILMS; LIGHT BARRIER; NANOPARTICLES; NANOCOMPOSITES; POLYETHYLENE; ANTIOXIDANT; LINKING; CLOVE;

D O I：

10.3390/polym13152403

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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.

引用

页数：12

共 49 条

[1] Mechanical, structural and thermal properties of Ag-Cu and ZnO reinforced polylactide nanocomposite films [J].