在最初在不同温度下冷并存储长达两年的各种冷果上存在食物传播病毒
Hyo-Jung Kim1, Eric Jubinville1, Valérie Goulet-Beaulieu1
1Institute of Nutrition and Functional Foods (INAF), Université Laval, Quebec City, QC, Canada.
International journal of food microbiology
|August 31, 2025
概括
结果并不能消除食物传播的病毒,如人类诺罗病毒 (HuNoV) 和甲型肝炎病毒 (HAV). 长期储存显示病毒的逐渐减少,但不足以完全无活化,强调需要额外的消毒方法.
科学领域:
- 食品安全和微生物学
- 病毒学
- 食品科学
背景情况:
- 通过受污染的冷果,食物传播的病毒,包括人类诺罗病毒 (HuNoV) 和甲型肝炎病毒 (HAV),对公众健康构成重大风险.
- 了解果中的病毒持久性对于制定有效的食品安全策略至关重要.
研究的目的:
- 在冷果上研究小鼠诺病毒-1 (MNV-1) 作为HuNoV替代物和HAV的长期存活.
- 确定初始冷温度和延长储存时间对病毒标位的影响.
主要方法:
- 五种果类型在-20°C,-80°C或-196°C下冷,并在-20°C下保存长达24个月.
- 在储存期间量化了MNV-1和HAV的病毒度.
- 果的结构完整性和脱水被评估与冷条件和储存时间相关.
主要成果:
- 在24个月后,MNV-1标位降低了高达3.2个日志,HAV降低了高达1. 7个日志,草的降低更大.
- 在196°C的初始冷引发了冷裂变,加速了脱水和病毒失活.
- 病毒的持久性受到果类型,初始冷温度和储存时间的显著影响.
结论:
- 仅仅冷是不足以使果中的食物传播病毒失活的; 它作为一种保存方法, 而不是绝育技术.
- 没有实现显著的病毒减少,强调了补充无活化策略的必要性.
- 物理化学或非热消毒方法对于确保冷果产品的足够病毒安全至关重要.
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