含有利格南的产品抑制了新鲜农产品上的Listeria monocytogenes生物膜
Ahmed M Elbakush1,2, Alex M Fulano1, Mark Gomelsky1
1Department of Molecular Biology, University of Wyoming, Laramie, WY, United States.
Frontiers in microbiology
|November 6, 2023
概括
树产品,如木材提取物和糖,可以抑制Listeria monocytogenes生物膜的产生. 这些天然化合物减少了细菌殖民,增强了新鲜农产品对菌病爆发的安全性.
科学领域:
- 食品微生物学 食品微生物学
- 细菌生物膜是一种细菌生物膜.
- 食品安全 食品安全
背景情况:
- 李斯特菌 (Listeria monocytogenes) 爆发与新鲜农产品的污染有关.
- 产出外聚糖体 (EPS) 的L. monocytogenes菌株在农产品上形成强大的生物膜,增加了菌病的风险.
- 在农产品储存和消费过程中,EPS生物膜增强了细菌的生存能力.
研究的目的:
- 调查产品作为新鲜产品上的L. monocytogenes抗菌剂的潜力.
- 为了确定产品中的活性化合物,可以抑制EPS生物膜的形成.
主要方法:
- 从树和 pecán/hickory木材的水性提取物进行了抗菌膜活性测试.
- 鉴定活性林化合物,包括诺特拉赫洛金-8'-O-β-D-葡萄皮化物 (NTG) 和拉里奇雷辛醇.
- 评估木提取物和糖对L. monocytogenes对西瓜,菜和生菜的殖民的影响.
主要成果:
- 木提取物和糖显著抑制了L. monocytogenes EPS生物膜的形成,而不会影响细菌的活力.
- 诺特拉赫洛根因-8'-O-β-D-葡萄皮酸 (NTG) 降低了L. monocytogenes在西瓜上的殖民率约为150倍,在菜/生菜上的殖民率降低了10-11倍.
- 糖,稀释1:200至1:800,防止了EPS生物膜的形成,并减少了EPS生产和非生产L. monocytogenes菌株的殖民.
结论:
- 产品,包括木材提取物和糖,是有效的天然剂,对新鲜产品上的L. monocytogenes生物膜.
- 鉴定到的基素,NTG和lariciresinol,显示出控制L. monocytogenes污染的巨大潜力.
- 产品提供了一个有希望的策略,通过减少细菌的表面殖民来提高新鲜产品的安全性.
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