propionibacteria 作为生产亲生物活性 scotta 的有希望的工具:一个概念验证研究
Roberta Coronas1, Giacomo Zara1, Antonio Gallo2
1Department of Agricultural Sciences, University of Sassari, Sassari, Italy.
Frontiers in microbiology
|August 17, 2023
概括
乳制品菌被分离并研究了益生菌的潜力. 四种Propionibacterium freudenreichii菌株显示出高抗压能力,并在乳制品副产品上产生维生素B9和B12.
科学领域:
- 食品微生物学 食品微生物学
- 乳制品科学 乳制品科学
- 益生菌 益生菌 益生菌
背景情况:
- 乳制品菌是一种用在瑞士奶酪中使用的,以益生菌性质而闻名的,阳性Actinomycetota.
- 循环经济方法鼓励对像苏格兰牛奶这样的乳制品副产品进行价值化.
- 研究乳制品propionibacteria的新型应用与可持续的食品生产保持一致.
研究的目的:
- 从各种来源中分离和描述乳制品菌,以便在亲生物活性食品和料中潜在使用.
- 评估选定分离物的功能性和生物技术性质,重点关注抗压力和维生素生产.
- 评估斯科塔作为培养这些细菌和生产有价值化合物的基质的适用性.
主要方法:
- 47 Propionibacterium 和 Acidipropionibacterium spp. 的分离和表征 来自山羊奶酪,牛奶和绵羊乳液.
- 抗生素敏感性测试 (MIC) 和乳糖利用率的评估.
- 评估压力耐力 (胆盐,酸,,冷化) 和维生素的生产 (B9,B12) 在苏格兰.
主要成果:
- 25个分离物使用了乳糖;四种Propionibacterium freudenreichii菌株对胆汁盐,酸,和冷化具有显著的耐药性.
- 这四种菌株在scotta.上实现了高细胞密度 (8.119.45Log CFU mL-1).
- 代谢剖析证实了维生素B9的生产和可巴胺衍生物 (0.491.31毫克L-1).
结论:
- 精选的P. freudenreichii分离物是开发在scotta上的亲生活性产品的有希望的候选者.
- 这项研究表明,乳制品菌在循环经济模式下,对于高价值食品成分生产的潜力.
- 需要进行进一步的研究,以优化这些益生菌及其代谢物的基于scotta的生产.
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