数字农科院2.0

Multifunctional carbon dots with full-band UV-to-HEBL shielding and antibacterial properties in polyvinyl alcohol film for enhancing food preservation

文献类型： 外文期刊

作者： Hong Duan;Manli Zhang;Yuming Deng;Lingyan Zheng;Tongtong Wang;Baoguo Sun;Gang Chen

作者机构：

关键词： Anti-bacterial;Carbon dots;Ferulate ester;Food packaging;UV light blocking

期刊名称： Food Packaging and Shelf Life

ISSN： 2214-2894

年卷期： 2025 年 48 卷

页码：

收录情况： SCIE（2025版）

摘要： In this study, a new type of carbon dots based on diethyl ferulate (DEF-CDs) was developed, and doped into polyvinyl alcohol (PVA) to prepare an active food packaging film that effectively inhibits photooxidation and microbial contamination of food. Benefit from the rational design of the structure and optimization of the precursor for the DEF-CDs synthesis, 0.4 % of DEF-CDs in PVA film can prevent 100 % ultraviolet light (UV) and 99.90 % high-energy blue light (HEBL). Furthermore, its UV and HEBL blocking capacity shows no significant decline under 40 days of accelerated aging tests. Moreover, the DEF-CDs/PVA film exhibits significant antibacterial capacity, and with the concentration of DEF-CDs increased from 0 % to 0.8 %, the inhibition zone diameters increased from 8 mm to 22.8 mm for Staphylococcus aureus and from 8 mm to 11.8 mm for Escherichia coli O157:H7. Finally, using the DEF-CDs/PVA film as active food packaging, the shelf life of strawberry, jujube and milk was extended significantly. This work exhibits the potential of DEF-CDs as multifunctional nanoreinforcements for constructing protective food packaging.

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