用于控制与双动物消费相关的病原细菌的菌体的特征
Pedro Costa1, Carla Pereira1, Vanessa Oliveira1
1CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
International journal of food microbiology
|February 13, 2025
概括
鉴定了五种新型细菌菌体 (菌体),并发现它们有效控制双动物中的大肠杆菌和沙门氏菌等致病细菌. 这种菌体生物控制为食品安全提供了一个有希望的替代方案.
科学领域:
- 微生物学 微生物学
- 食品科学 食品科学 食品科学
- 生物技术是生物技术.
背景情况:
- 由于病原性细菌,例如大肠杆菌,沙门氏菌,海菌和Vibrio parahaemolyticus等,两食用会带来风险.
- 抗生素耐药性需要使用替代策略来控制食物传播的病原体.
- 菌体 (菌体) 是一种潜在的对抗细菌感染的生物控制剂.
研究的目的:
- 为了描述五种新分离的细菌菌体.
- 评估它们在控制与双安全相关的特定病原细菌方面的有效性.
- 评估菌体的特征,包括宿主范围,吸附,生长动力学和溶解潜力.
主要方法:
- 五种细菌菌体 (PCEc3,PCST1,PCVp3,PCSE1,PCAh2) 的分离和表征.
- 宿主范围的确定和吸附率测试.
- 一步增长曲线分析以确定潜伏期和爆发大小.
- 在受控条件下评估菌体在降低细菌负载方面的疗效.
主要成果:
- 隔离的菌体包括西福病毒和髓病毒形态型.
- 四种菌体证明了对细菌控制的安全性;一个 (PCAh2) 显示了潜在的溶解性活性.
- 菌体表现出狭窄的宿主范围,但有一些交叉感染能力.
- 在10小时内实现有效的细菌负载减少 (3.73-5.57日志CFU/mL).
结论:
- 描述的菌体是有效的生物控制剂,对关键的双关联的病原体.
- 菌体疗法为确保双动物食品安全的传统方法提供了可行的替代方案.
- 对菌体PCAh2的溶解性潜力的进一步研究是有必要的.
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