使用真空蒸汽巴氏杀菌在软小麦核上的沙门氏菌和滋果毒素产生埃舍里希亚大肠杆菌的非活性化
Yawei Lin1, Quincy Suehr2, Kirk Dolan3
1Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, United States of America.
International journal of food microbiology
|September 3, 2023
概括
真空蒸汽处理可以有效地减少肠道病原体,如小麦上的沙门氏菌和滋果毒素产生大肠杆菌 (STEC). 这种方法对确保面粉生产中的食品安全充满希望.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 农业工程 农业工程
背景情况:
- 小麦受到肠道病原体的污染构成了食品安全风险,导致面粉传播的疫情.
- 以前的研究表明,真空蒸汽处理对小麦核的病原体减少的潜力.
研究的目的:
- 评估一种新型实验室级真空蒸汽杀菌器 (VSP) 在软小麦上灭活沙门氏菌和产生石毒素的大肠杆菌 (STEC) 的疗效.
- 在VSP处理过程中建模非异热时间-温度概况和微生物减少.
主要方法:
- 用多种沙门氏菌和STEC菌株注射软小麦粒.
- 使用新设计的实验室级真空蒸汽巴氏净化器 (VSP) 进行治疗.
- 时间-温度历史和微生物种群减少的建模.
主要成果:
- 真空蒸汽处理有效地消毒了被肠道病原体污染的小麦粒.
- 与STEC菌株 (D75°C:3.1-4.6分钟) 相比,沙门氏菌菌株的耐热性较低 (D75°C:2.8-3.2分钟).
- 菌 (Enterococcus faecium) (D75°C: 3.3分钟) 显示出作为替代品的潜力,但对于所有STEC菌株来说并不保守.
结论:
- 真空蒸汽消毒是一种可行的方法,可以减少小麦上的肠道病原体.
- 该VSP系统有效地禁用沙门氏菌和STEC,保持小麦的质量.
- 使用E. faecium作为替代品的进一步研究应该考虑目标STEC菌株的热电阻.
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