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

IF 8.5 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Packaging and Shelf Life Pub Date : 2025-03-01 DOI:10.1016/j.fpsl.2025.101468

Hong Duan , Manli Zhang , Yuming Deng , Lingyan Zheng , Tongtong Wang , Baoguo Sun , Gang Chen

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引用次数: 0

Abstract

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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来源期刊

Food Packaging and Shelf Life Agricultural and Biological Sciences-Food Science

CiteScore

14.00

自引率

8.80%

发文量

214

审稿时长

70 days

期刊介绍： Food packaging is crucial for preserving food integrity throughout the distribution chain. It safeguards against contamination by physical, chemical, and biological agents, ensuring the safety and quality of processed foods. The evolution of novel food packaging, including modified atmosphere and active packaging, has extended shelf life, enhancing convenience for consumers. Shelf life, the duration a perishable item remains suitable for sale, use, or consumption, is intricately linked with food packaging, emphasizing its role in maintaining product quality and safety.