气候变化带来的污染路线和时间的风险,以及对叶绿植物中的沙门氏菌的菌体控制
Sahin Namli1, Hilal Samut1, Nuray Comlekcioglu2
1Department of Food Engineering, Faculty of Engineering, Middle East Technical University, Ankara 06800, Turkey.
FEMS microbiology ecology
|January 9, 2026
概括
温度升温增加了沙门氏菌在花园的持续性,晚期灌污染带来了更高的食品安全风险. 收获前的菌体灌和洗提供了显著的控制,减轻了细菌负载.
科学领域:
- 食品微生物学 食品微生物学
- 植物病理学 植物病理学
- 环境科学 环境科学
背景情况:
- 气候变化正在增加全球气温,影响农业食品安全.
- 沙门氏菌 (Salmonella enterica serovar) 纽波特 (Salmonella Newport) 是一个重要的食物传播病原体.
- 了解沙门氏菌在绿叶蔬菜上的持久性对于公共卫生至关重要.
研究的目的:
- 在模拟的气候变化变暖场景下调查沙门氏菌在花园的持续性.
- 评估污染路线 (种子与灌) 和时间对细菌负载的影响.
- 评估收获前菌体灌和洗干预措施的有效性.
主要方法:
- 园林被通过种子或在不同生长阶段的灌接种沙门氏菌.
- 植物在受控温度 (15-21°C) 下进行化.
- 菌体灌和洗处理是在收获前进行的.
主要成果:
- 沙门氏菌纽波特在花园上持续存在,在较低的温度 (15°C) 上的存活率更高.
- 晚期灌污染导致收获时细菌负载增加.
- 洗减少了沙门氏菌,但菌体治疗与洗相结合显著降低了细菌水平 (高达2.2 log MPN/g).
结论:
- 温度,污染时间和路线显著影响沙门氏菌在花园的持久性.
- 收获前的菌灌,特别是与洗相结合时,是控制绿叶蔬菜上的沙门氏菌的有希望的策略.
- 这些发现在不断变化的气候条件下为食品安全实践提供了信息.
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