聚合采样性能类似于复合产品样本,以恢复整个罗马菜生产中的质量和安全指标
Jorge Quintanilla Portillo1, Rachel J Gathman1, Jiaying Wu1
1Department of Food Science and Human Nutrition, University of Illinois Urbana Champaign, Illinois, USA.
Journal of food protection
|March 13, 2025
概括
使用聚合物抹布进行集体采样,为绿叶食品安全提供了一个有希望的,非破坏性的方法. 这种技术显示有氧细菌和大肠杆菌的恢复与传统的抓取样本相比,支持其用于病原体检测.
科学领域:
- 食品微生物学 食品微生物学
- 农业科学 农业科学
- 食品安全工程 食品安全工程
背景情况:
- 传统的食品安全采样方法对绿叶蔬菜可能是破坏性的,可能不能完全代表微生物污染.
- 开发非破坏性,代表性采样技术对于准确的食品安全评估在绿叶生产中至关重要.
研究的目的:
- 为了比较使用聚合物织物抹布采集样本与传统产品组织采集样本的有效性,用于从罗马菜中回收有氧细菌,总大肠杆菌和通用大肠杆菌.
- 评估罗马菜生产的各个阶段的总样采集,包括收获前,收获期间和收获后.
主要方法:
- 从商业罗马菜在不同的生长和加工阶段收集了聚合拭子和产品组织抓取样本.
- 微生物分析的重点是使用既定的计数技术量化有氧细菌,总大肠杆菌和通用大肠杆菌 (E. coli).
- 采样包括收获前,收获期间 (收割机下落,垃圾桶顶部,收割机手套,田间装饰) 和收获后 (头部外部和内部).
主要成果:
- 收获前,聚合性擦拭物产生了较高的有氧细菌,但比抓取样本更低的胆固醇菌.
- 在收获过程中,抹布和收割手套显示,与田间装饰和垃圾桶顶部相比,有氧细菌的恢复率更高.
- 收获后,在聚合采样方法和采集样本之间没有观察到有氧细菌或菌总回收的显著差异,无论是外部还是内部的头部表面.
结论:
- 使用聚合物拭片的聚合采样显示了与传统的农产品采样相比的性能,用于恢复叶绿中的关键微生物指标.
- 这些发现支持聚合采样作为绿叶生产中食品安全监测的可行,非破坏性的替代方案的潜力.
- 需要进一步调查在绿叶蔬菜中对特定病原体恢复的总样.
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