乳糖杆菌菌的益生菌性质乳糖杆菌从天然乳清初始培养中分离出来的菌株
Ida De Chiara1, Rosangela Marasco1, Milena Della Gala1
1Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), Università degli Studi della Campania Luigi Vanvitelli, Via Vivaldi 43, 81100 Caserta, Italy.
Foods (Basel, Switzerland)
|March 28, 2024
概括
乳制品中的Lactococcus lactis菌株显示出有前途的益生菌潜力,能够在模拟的胃状况下生存并抑制病原体粘附. 这些安全菌株可以用于新型功能性食品.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 益生菌 益生菌 益生菌
背景情况:
- 乳球菌 (L. lactis) 是一种安全的乳酸细菌 (LAB),广泛用于发酵乳制品.
- 很少有研究报告了直接从乳制品中分离出来的L. lactis菌株的益生菌特性.
研究的目的:
- 评估来自天然乳清初始培养的L. lactis菌株的益生菌潜力.
- 评估安全参数和选定菌株抑制病原体粘附于上皮细胞的能力.
主要方法:
- 评估的益生菌特征:在模拟的胃汁中生存,胆盐耐受性,水性,自动和协同聚合.
- 评估的安全性:抗生素敏感性和血液溶解活性.
- 测试的病原体抑制:L. lactis菌株能够防止肠道侵入性大肠杆菌 (EIEC) 和沙门氏菌Typhimurium粘附于上皮细胞的能力.
主要成果:
- 几种L. lactis菌株表现出高水性和自我聚合,与病原体的共同聚合率低.
- 根据对抗生素敏感性和缺乏血液溶解活性,所有测试的菌株都被证实是安全的.
- 四个选定的L. lactis菌株 (A3-A5-I4-I7) 显示出与EIEC和S. Typhimurium竞争并保护上皮细胞免受感染的显著能力.
结论:
- 从乳制品来源中分离出来的L. lactis菌株具有显著的益生菌特性.
- 这些菌株显示出用于开发具有健康益处的新功能食品的潜力.
- 进一步的研究可以利用这些发现,在食品工业中应用新的益生菌.
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