干鱼的微生物学安全性从原料到加工结束
Valentina Indio1, Federica Savini1, Fausto Gardini2
1Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, Ozzano dell'Emilia (BO), Italy.
International journal of food microbiology
|March 3, 2024
概括
这项研究评估了干的鱼,剑鱼和金枪鱼的微生物安全性. 结果显示没有组胺或Listeria monocytogenes,表明干燥制的鱼类产品对消费者来说是安全的.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 食品安全 食品安全
背景情况:
- 由于对加工鱼类产品的需求日益增加,因此需要关于其微生物安全性的可靠数据.
- 关于干鱼的微生物概况和安全标准的信息有限.
研究的目的:
- 在鱼,剑鱼和金枪鱼的干过程中评估微生物质量和安全参数 (总有氧计数,Enterobacteriaceae,Listeria monocytogenes,基因组胺).
- 在整个干燥固化过程中使用射击枪元基因组学来描述微生物群落.
主要方法:
- 培养方法用于总有氧殖民地数量和Enterobacteriaceae.
- 用于微生物识别的枪支元基因组测序.
- 高性能液体染色学 (HPLC) 用于组胺和生物氨基的量化.
- 在干燥固化过程中监测pH值和水活性,长达240小时.
主要成果:
- 肠杆菌菌群的数量仍然低于10 CFU/g,并且无法检测到组胺/生物氨基.
- 总有氧计数因鱼类而异,鱼和金枪鱼的微生物丰富度高于剑鱼.
- 通过培养方法没有检测到Listeria monocytogenes;在剑鱼和金枪鱼中通过metagenomics发现了最小的痕迹.
- 鉴定出产生组胺的细菌,主要在剑鱼中,但没有导致可检测的组胺水平.
结论:
- 在受控条件下的干燥固化过程有效地保持了鱼,剑鱼和金枪鱼的微生物安全性.
- 该研究为准备食用的干鱼产品的风险评估提供了关键数据.
- 甲基因组学为鱼类加工过程中的微生物动态提供了宝贵的见解.
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