影响阿拉巴马池微生物污染的环境因素的纵向研究:对定性风险评估的影响
Zoila Chevez1, Elisa Tobar1, Daniel Weller2
1Department of Horticulture, Auburn University, Auburn, Alabama, USA.
Journal of food protection
|June 4, 2025
概括
农业池可以容纳有害细菌,如EHEC和沙门氏菌. 水质和周围的土地利用影响污染风险,影响生产安全和公共卫生.
科学领域:
- 环境微生物学环境微生物学
- 食品安全 食品安全
- 农业科学 农业科学
背景情况:
- 农业用水源,如池,对收获前产品的污染构成风险,导致食物传播疾病的爆发.
- 了解农业用水中的微生物污染对于确保产品安全和防止召回至关重要.
研究的目的:
- 评估两年来农业池中EHEC (输血性大肠杆菌) 和沙门氏菌的流行情况.
- 确定微生物水质,环境因素和特定细菌病原体的存在之间的相关性.
主要方法:
- 在两年内,每两个月对七个农业池取样.
- 针对EHEC和沙门氏菌进行PCR查,并量化通用大肠杆菌.
- 条件森林和回归分析,以评估微生物水质和环境因素.
主要成果:
- 在6%的样本中检测到沙门氏菌,确定了肯塔基州,纽波特州和哈特福德州的血清型. 在83%的样本中发现了EHEC生物标志物.
- 通用大肠杆菌水平与降雨,度,开发土地和溶解氧气有关.
- 沙门氏菌和EHEC检测与特定的土地覆盖类型 (牧场,森林,湿地) 和降雨模式有关.
结论:
- 农业池水质是动态的,受到环境条件和周围土地利用的影响.
- 结果为农业水道中微生物危害的定性风险评估提供了基线数据.
- 这项研究向种植者介绍了潜在的污染风险和减轻风险的策略,以提高产品安全.
相关概念视频
Freshwater Microbial Ecology
66
Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic...
66
Microbial Bioremediation of Pesticides
96
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
96


