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血清多样性和细胞状态调节沙门氏菌对抗菌治疗的反应

Laura Torres¹, Maria Salazar¹, Alexandra Calle¹

¹School of Veterinary Medicine, Texas Tech University, Amarillo, TX 79106, USA.

Journal of food protection

|January 30, 2026

概括

沙门氏菌生物膜比浮游生物细胞更难杀死,消毒剂的有效性因血清而异. 需要改进的卫生协议来控制食品加工中的沙门氏菌污染.

科学领域:

食品安全与微生物学
抗微生物耐药性抗微生物耐药性
食品加工卫生食品加工

背景情况:

在美国,沙门氏菌污染导致了大量的食源性疾病和死亡.
在食品加工环境中控制沙门氏菌是具有挑战性的,原因是血清细胞变异和细胞状态等因素.
现有的卫生协议可能对所有形式的沙门氏菌不完全有效.

研究的目的:

调查影响食品加工环境中沙门氏菌控制的因素.
探索血清细胞变异和细胞状态 (生物膜与浮游生物细胞) 对消毒剂疗效的影响.
评估低 (SH) 和酸 (PAA) 对不同类型的沙门氏菌血清菌的有效性.

主要方法:

七种沙门氏菌血清被测试在不钢上的生物膜和浮游生物状态.
细菌细胞被用低酸 (SH) 和酸 (PAA) 处理,度和接触时间各不相同.
细菌负载的减少 (Log10 CFU/cm2) 被测量以确定消毒剂的有效性.

主要成果:

与浮游生物细胞相比,生物膜在所有血清细胞和治疗中显示出明显较低的细菌减少.
甲酸 (PAA) 对生物膜的有效性明显高于二 (SH).
在沙门氏菌血清变体之间,消毒剂的有效性有显著差异,其中肯塔基州和婴儿科的沙门氏菌表现出更高的耐药性.

结论:

生物膜的形成显著降低了常见的化学消毒剂对沙门氏菌的有效性.
消毒剂的有效性取决于血清,因此需要针对不同菌株量身定制的方法.
食品行业必须考虑血清菌变异和生物膜的存在,以实施改善的卫生协议,以有效控制沙门氏菌.

关键词:

沙门氏菌的血清病毒.生物膜是一种生物膜.消毒剂消毒剂消毒剂消毒剂佩拉乙酸是一种酸.低化酸的使用方法不钢-不钢的使用

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