强烈脉冲光对食品加工中的Pseudomonas aeruginosa的杀菌作用
Jinglong Liang1,2,3, Teng Yi Huang4, Xuejie Li5,6
1College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, China.
Frontiers in microbiology
|September 11, 2023
概括
强脉冲光 (IPL) 在包括生物膜在内的各种状态中有效杀死Pseudomonas aeruginosa. 更高的电容增强了IPL的性能.
科学领域:
- 食品微生物学 食品微生物学
- 微生物无活化技术 微生物无活化技术
- 食品安全和加工 食品安全和加工
背景情况:
- Pseudomonas aeruginosa 是一种重要的食源性病原体,引起各种感染.
- 强脉冲光 (IPL) 为食品加工提供了一种高效,安全和灵活的灭菌方法.
- IPL克服了其他物理杀菌技术的局限性.
研究的目的:
- 评估强脉冲光 (IPL) 在消除 Pseudomonas aeruginosa 的有效性.
- 为了确定电容和环境条件对IPL灭菌效果的影响.
- 提供支持IPL杀菌在食品加工中的使用数据.
主要方法:
- 评估IPL在浮游生物和生物膜状态下对Pseudomonas aeruginosa的杀死效率.
- 在IPL治疗中使用不同的电容级别 (650μF,470μF,220μF).
- 在25°C和4°C的液体食品模型,96孔板和聚碳酸膜模型中进行实验.
主要成果:
- IPL对浮游生物和生物膜Pseudomonas aeruginosa表现出高效,实现了目标杀伤率.
- 膜和板状模型中的生物膜与浮游生物相比,对IPL的抗性更强.
- 较低的电容需要更多的闪光才能达到同等的杀菌效果.
结论:
- Pseudomonas aeruginosa (浮游生物与生物膜) 的状态显著影响IPL的杀菌作用.
- 在IPL系统中增加容量会导致脉冲数量增加和绝育效率提高.
- IPL是一种有前途的技术,用于控制食品加工应用中的Pseudomonas aeruginosa.
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