食品包装表面TiO2纳米涂层对大肠杆菌和鼠伤寒沙门氏菌的抗菌性能

IF 2.4 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Surface Engineering Pub Date : 2023-04-03 DOI:10.1080/02670844.2023.2232969

Patcharaporn Phuinthiang, D. Channei, K. Ratananikom, A. Nakaruk, W. Khanitchaidecha

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引用次数: 0

摘要

摘要:本研究旨在利用TiO2纳米薄膜涂层增强常见食品包装材料(PVC、PS、PET、PVDC)的表面性能。物理和化学分析证实了清晰的锐钛矿相膜。PET的抗菌活性最高，其次是PVDC、PS和PVC。UV-A照射60 min后，大肠杆菌去除率分别为99.85% (PET)、97.14% (PVDC)、96.5% (PS)和85.91% (PVC)。鼠伤寒沙门氏菌的检出率分别为97.8% (PET)、83.71% (PVDC)、74.79% (PS)和68.94% (PVC)。在120分钟内(大肠杆菌)和180分钟内(鼠伤寒沙门氏菌)完全根除这两种菌株。耐久性测试显示，15次循环后PET的质量损失为97 mg/kg，而PVC的质量损失最小，为7 mg/kg。研究结果表明，TiO2薄膜涂层能有效抑制细菌生长，延长食品保质期。

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Antibacterial properties of TiO2 nano coating on food packaging surfaces against Escherichia coli and Salmonella typhimurium

ABSTRACT This work aimed to enhance the surface properties of common food packaging materials (PVC, PS, PET, PVDC) by applying a TiO2 nano thin film coating. Physical and chemical analyses confirmed a well-defined anatase phase film. PET showed the highest antibacterial activity, followed by PVDC, PS, and PVC. After 60 min of UV-A irradiation, E. coli elimination rates were 99.85% (PET), 97.14% (PVDC), 96.5% (PS), and 85.91% (PVC). Similarly, for S. Typhimurium, the respective rates were 97.8% (PET), 83.71% (PVDC), 74.79% (PS), and 68.94% (PVC). Complete eradication of both strains occurred within 120 min (E. coli) and 180 min (S. Typhimurium). Durability testing revealed PET's mass loss of 97 mg/kg after 15 cycles, while PVC had the lowest value of 7 mg/kg. These findings demonstrate that TiO2 thin film-coated substrates effectively inhibit bacteria growth, extending food product shelf life.

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来源期刊

Surface Engineering 工程技术-材料科学：膜

CiteScore

5.60

自引率

14.30%

发文量

审稿时长

2.3 months

期刊介绍： Surface Engineering provides a forum for the publication of refereed material on both the theory and practice of this important enabling technology, embracing science, technology and engineering. Coverage includes design, surface modification technologies and process control, and the characterisation and properties of the final system or component, including quality control and non-destructive examination.