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： Duan, Hong 1 ; Zhang, Manli 1 ; Deng, Yuming 2 ; Zheng, Lingyan 1 ; Wang, Tongtong 4 ; Sun, Baoguo 1 ; Chen, Gang 1 ;
作者机构： 1.Beijing Technol & Business Univ, Key Lab Geriatr Nutr & Hlth, Minist Educ, Beijing 100048, Peoples R China
2.Jiangnan Univ, Synerget Innovat Ctr Food Safety & Qual Control, Sch Food Sci & Technol, Int Joint Lab Food Safety, Wuxi 214122, Jiangsu, Peoples R China
3.Inner Mongolia Dairy Technol Res Inst Co Ltd, Hohhot 010100, Peoples R China
4.Chinese Acad Agr Sci CAAS, Inst Qual Stand & Testing Technol Agroprod, Key Lab Agroprod Qual & Safety, Beijing 100081, Peoples R China
关键词： Ferulate ester; Carbon dots; UV light blocking; Anti-bacterial; Food packaging
期刊名称：FOOD PACKAGING AND SHELF LIFE （ 影响因子：10.6； 五年影响因子：9.8 ）
ISSN： 2214-2894
年卷期： 2025 年 48 卷
页码：
收录情况： SCI
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 nano- reinforcements for constructing protective food packaging.
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