脉冲电磁场产生的冲击波在降低微生物负载和改善生牛奶同质化的潜力
Ehsan Seyfali1, Mohammad Hadi Khoshtaghaza1, Milad Rouhi2
1Department of Biosystems Engineering, Tarbiat Modares University, Tehran, Iran.
Heliyon
|June 13, 2024
概括
脉冲电磁场 (PEMF) 产生的冲击波有效地减少了牛奶中的微生物. 这种新的方法有望通过降低细菌数量和颗粒大小来提高牛奶的安全性和质量.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 生物物理学的生物物理.
背景情况:
- 牛奶的传统热处理可以降低营养价值并改变其特性.
- 脉冲电磁场 (PEMF) 为产生冲击波提供了一种非热方法.
- 减少微生物负载和改善牛奶均质化是乳制品加工的关键挑战.
研究的目的:
- 研究由PEMF产生的冲击波治疗对包装牛奶中的微生物减少的有效性.
- 评估冲击波处理对牛奶中的颗粒大小分布的影响.
- 评估PEMF产生的冲击波对*Salmonella enterica*的有效性.
主要方法:
- 用电磁冲击波发生器1000次冲动处理包装的新鲜牛奶.
- 在酸盐缓冲盐溶液 (PBS) 中处理*Salmonella enterica*悬浮液,300次冲动.
- 分析了总细菌数量, *Salmonella enterica* 数量和牛奶颗粒大小分布.
主要成果:
- 在冲击波治疗后,在牛奶中观察到总细菌数量减少0.7log.
- 在细菌悬浮剂中, *Salmonella enterica* 数量显著减少了3个日志.
- 与未经处理的牛奶相比,冲击波治疗导致牛奶颗粒大小的减少.
结论:
- 由PEMF产生的冲击波为减少牛奶中的微生物负载提供了一种新有效的方法.
- 这项技术有可能提高牛奶的安全性并增强其同质化特性.
- 该研究使用商业上相关的牛奶量强调了其工业适用性.
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