Copper sulfide nanoparticle-carrageenan films for packaging application

被引：81

作者：

Li, Fan ^{[1
]}

Liu, Yingnan ^{[1
]}

Cao, Yuanyuan ^{[1
]}

Zhang, Yalan ^{[1
]}

Zhe, Taotao ^{[1
]}

Guo, Zhirong ^{[1
]}

Sun, Xinyu ^{[1
]}

Wang, Qinzhi ^{[1
]}

Wang, Li ^{[1
]}

机构：

[1] Northwest A&F Univ, Coll Food Sci & Engn, Yangling 712100, Shaanxi, Peoples R China

来源：

FOOD HYDROCOLLOIDS | 2020年 / 109卷

关键词：

Copper sulfide; Carrageenan; Photothermal antibacterial ability; Transparency; Food packaging; EDIBLE FILMS; KAPPA-CARRAGEENAN; FOOD; NANOCOMPOSITES; NANOCRYSTALS; ANTIOXIDANT; HYDROGELS; CHITOSAN; AGAR; ZNO;

D O I：

10.1016/j.foodhyd.2020.106094

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this work, to prevent the spoilage of food by microbial contamination, copper sulfide nanoparticles (CuS NPs) with photothermal effect were successfully synthesized by a one-step hydrothermal method and uniformly dispersed in natural carrageenan (Carr) to obtain Carr/CuS films. Photothermal-induced antibacterial testing confirmed that the Carr/CuS film has a broad-spectrum antibacterial activity against Escherichia coli (99.2%) and Staphylococcus aureus (99.9%). Antibacterial test on beef also proved that near-infrared (NIR) irradiation significantly improved the antibacterial ability of the Carr/CuS film against bacteria on the food sample. In addition, compared with the Carr film, the Carr/CuS film with high transparency showed enhanced mechanical properties and thermal stability. The introduction of this NIR-induced strategy is expected to open a new way for broadening the application of antibacterial packaging.

引用

页数：10

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