[对于微生物计数计算的甲板上殖民地计数的上限和下限的随机考虑]
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan
|December 18, 2024
概括
微生物殖民地数量限制对于食品安全计算至关重要. 这项研究分析了日本和美国的标准,发现极限值的接受概率很低,并提出了设定这些极限的新方法.
科学领域:
- 微生物学 微生物学
- 食品科学 食品科学 食品科学
- 统计 统计 统计 统计
背景情况:
- 在食品样本中精确计算微生物细胞的依赖于在亚格板上对殖民地数量的定义的上限和下限.
- 日本 (卫生,劳工和福利部,日本工业标准) 和美国 (食品和药物管理局) 的现有标准被广泛使用,但它们的随机性质需要评估.
研究的目的:
- 为了分析微生物殖民地的随机性质,由日本和美国标准定义的微生物殖民地数值极限.
- 评估根据这些标准进行细胞计算的接受概率 (P_A).
- 开发一种新的方法来确定殖民地数量限制,考虑到不接受的风险.
主要方法:
- 假设的殖民地数量遵循基于先前研究的Poisson分布.
- 理论上和通过模拟计算了各种平均殖民地数量的接受概率 (P_A).
- 在不同的标准 (卫生,劳工和福利部,FDA,JIS) 中,在各自的下限和上限比较P_A值.
主要成果:
- 在分析标准的下限和上限时,被发现接受的概率 (P_A) 很低 (例如,在FDA的平均值下限=25时,P_A = 0.278).
- 广泛的平均殖民地数量显示了在三个标准中不同的P_A值.
- 日本工业标准 (JIS) 显示了最大的平均殖民地数量范围,P_A > 0.5.5.
结论:
- 食品安全标准中的当前微生物殖民地数值限制可能导致细胞计算的接受概率较低.
- 开发了一种用于设定殖民地数量限制的新方法,其中包含了不接受的风险.
- 这些发现为完善食品分析中的微生物计数标准提供了宝贵的见解.
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