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从狗便中分离,描述和比较新型潜在益生菌的基因组学

Ngamlak Foongsawat¹, Sirinthorn Sunthornthummas², Kwannan Nantavisai³

¹Department of Microbiology, Faculty of Science, Srinakharinwirot University, Bangkok 10110, Thailand.

Food science of animal resources

|July 24, 2023

概括

从狗便中分离出来的四种乳酸细菌 (LAB) 菌株显示出益生菌的潜力. 两种菌株,Limosilactobacillus fermentum Pom5和Pediococcus pentosaceus Chi8,被认为是有前途的犬类益生菌.

科学领域:

微生物学微生物学
动物科学动物科学
益生菌益生菌益生菌

背景情况:

乳酸细菌 (LAB) 被广泛用作益生菌,但它们的有效性取决于宿主特异性.
狗的益生菌LAB理想情况下应该来自狗的肠道,以确保宿主适应和有益的影响.

研究的目的:

从狗便样本中分离和表征乳酸细菌 (LAB),以寻找潜在的益生菌应用.
评估犬类衍生LAB的表型和基因组特征,以确定其作为狗中的益生菌的安全性和有效性.

主要方法:

从狗便样本中分离和选LAB.
益生菌性质的评估:低pH/胆盐耐受性,疏水性,聚合性,粘附性,抗菌活性,抗氧化能力 (DPPH) 和β-银酸酶活性.
基因组评估安全性 (溶血活性,生物氨基生产,致病基因) 和抗生素耐药性概况.

主要成果:

四个LAB菌株 (Enterococcus hirae Pom4,Limosilactobacillus fermentum Pom5,Pediococcus pentosaceus Chi8,Ligilactobacillus animalis FB2) 显示出有前途的益生菌特征.这些菌株中,大约有6个具有益生菌特征.
所有选择的菌株都是安全的,缺乏溶血活性,生物氨基生产和致病基因.
L. fermentum Pom5和P. pentosaceus Chi8表现出对抗生素的敏感性和没有抗生素耐药性基因,加强了它们的安全性.

结论:

根据它们的安全性,表型和基因组特征,Limosilactobacillus fermentum Pom5和Pediococcus pentosaceus Chi8被确定为犬类的强有力的益生菌候选者.
特定于犬类的LAB分离物为开发有效和安全的益生菌干预措施提供了一个有希望的策略,以改善犬类健康.

关键词:

在Limosilactobacillus的发酵中.这是一种Pediococcus pentosaceus.狗类犬类动物狗类犬类乳酸细菌是一种乳酸细菌.益生菌是一种益生菌.

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