抗生素耐药性基因在不同加工的牛奶和来自奥地利的新鲜产品中的流行
Sonia Galazka1,2, Valerie Vigl1, Melanie Kuffner1
1Division of Data, Statistics and Risk Assessment, Austrian Agency for Health and Food Safety AGES, 1220 Vienna, Austria.
Foods (Basel, Switzerland)
|January 11, 2025
概括
植物性食品,如果汁,可以携带抗生素耐药性基因 (ARG). 高压加工 (HPP) 显著降低了糖果中的ARG和移动遗传元素 (MGE),减轻了消费这些食品带来的潜在健康风险.
科学领域:
- 食品微生物学和食品安全
- 抗微生物耐药性 (AMR) 监测监测
- 分子生物学和基因组学
背景情况:
- 植物性食品,特别是生或微加工的食品,如果汁,可以携带微生物抗生素耐药性基因 (ARG).
- 从食物转移到人体微生物群的ARG构成潜在的健康危险,有助于抗菌素耐药性 (AMR) 的传播.
- 了解不同食品加工方法中ARG和移动遗传元素 (MGE) 的流行率和负载对于风险评估至关重要.
研究的目的:
- 用各种方法 (新鲜,冷压,消毒,高压加工) 处理的滑水中量化和识别临床相关的ARG和MGE.
- 为了比较加工乳汁中的ARG和MGE负载与新鲜产品 (有机和传统) 的负载.
- 评估与糖果消费相关的潜在健康风险,并评估加工技术在减少ARG转移方面的有效性.
主要方法:
- 量化聚合酶连锁反应 (qPCR) 用于检测和量化特定的ARG和MGE (例如, *ISPps*, *intI1*, *bla*, *strB*, *qacEΔ1*, *ermB*, *sul1*).
- 使用Illumina 16S rRNA基因测序来描述细菌微生物群,识别潜在的病原体和检测ARG载体.
- 在不同的滑糖加工方法和新鲜产品样本中,ARG和MGE负载的比较.
主要成果:
- 所有测试的果汁和一些新鲜产品 (生菜,胡卜,番茄) 含有ARG和MGE,度高达10^4副本/毫升.
- 新鲜制备的滑液呈现了最高的ARG和MGE总负载 (2.2 × 10^5副本/毫升,16/26目标),而高压加工 (HPP) 滑液则是最低的 (4.1 × 10^3副本/毫升,5/26目标).
- HPP处理减少了大约5个日志的微生物负载,并降解了携带ARG的细胞外DNA,显著降低了ARG转移的风险.
结论:
- 滑水可以成为ARG和MGE的重要载体,加工方法极大地影响了它们的流行和负载.
- 高压加工 (HPP) 是一种有效的方法,可以减少微生物污染,并消除乳液中编码ARG的细胞外DNA.
- 建议采用像HPP这样的DNA分解处理技术,以尽量减少通过糖果消费传播的AMR.
关键词:
16S rRNA 基因测序的基因测序抗菌药物反症 (AMR) 是一种在 ARG 中,有 ARG 的存在.抗生素耐药性基因是抗生素耐药性的基因.抗微生物耐药性 抗微生物耐药性细菌群体的组成细菌群体的组成食品/料链中的食物/料链.新鲜产品的新鲜产品.这是一道甜蜜的牛奶.更多相关视频
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