The Chinese PLA Center for Disease Control and Prevention, Beijing, China.
Tianjin Medical University, Tianjin, China.
Sci Rep. 2024 Jun 2;14(1):12651. doi: 10.1038/s41598-024-62204-x.
Effective disinfection methods are crucial in the cold chain transportation process of food due to the specificity of temperature and the diversity of contaminated flora. The objective of this study was to investigate the sanitizing effect of different disinfectants on various fungi at - 20 °C to achieve accurate disinfection of diverse bacterial populations. Peracetic acid, hydrogen peroxide, and potassium bisulfate were selected as low-temperature disinfectants and were combined with antifreeze. The sanitizing effect of these cryogenic disinfectants on pathogens such as Bacillus subtilis black variant spores (ATCC9372), Staphylococcus aureus (ATCC 6538), Candida albicans (ATCC 10231), Escherichia coli (8099), and poliovirus (PV-1) was sequentially verified by bactericidal and virus inactivation experiments. After a specified time of disinfection, a neutralizing agent was used to halt the sanitizing process. The study demonstrates that different disinfectants exhibit selective effects during the low-temperature disinfection process. Peracetic acid, hydrogen peroxide, and potassium monopersulfate are suitable for the low-temperature environmental disinfection of bacterial propagules, viruses, and fungal contaminants. However, for microorganisms with strong resistance to spores, a low-temperature disinfectant based on peracetic acid should be chosen for effective disinfection treatment. Our results provide a valuable reference for selecting appropriate disinfectants to sanitize various potential pathogens in the future.
在食品冷链运输过程中，由于温度的特殊性和污染菌群的多样性，有效的消毒方法至关重要。本研究的目的是探讨不同消毒剂在-20°C 下对各种真菌的消毒效果，以实现对多种细菌种群的准确消毒。过氧乙酸、过氧化氢和硫酸氢钾被选为低温消毒剂，并与防冻剂结合使用。通过杀菌和病毒灭活实验，依次验证了这些低温消毒剂对枯草芽孢杆菌黑色变种孢子（ATCC9372）、金黄色葡萄球菌（ATCC 6538）、白色念珠菌（ATCC 10231）、大肠杆菌（8099）和脊髓灰质炎病毒（PV-1）等病原体的消毒效果。消毒指定时间后，用中和剂停止消毒过程。研究表明，不同的消毒剂在低温消毒过程中表现出选择性效应。过氧乙酸、过氧化氢和过一硫酸氢钾适用于细菌繁殖体、病毒和真菌污染物的低温环境消毒。然而，对于具有较强孢子抗性的微生物，应选择基于过氧乙酸的低温消毒剂进行有效消毒处理。我们的研究结果为未来选择合适的消毒剂对各种潜在病原体进行消毒提供了有价值的参考。
