密切相关的Lactococcus lactis菌株的遗传特征用于乳制品初始培养
Yuliya E Uvarova1,2, Tamara M Khlebodarova1, Asya R Vasilieva1,2
1Laboratory of Molecular Biotechnology, Institute of Cytology and Genetics SB RAS, Lavrentyev Ave. 10, 630090 Novosibirsk, Russia.
International journal of molecular sciences
|January 10, 2026
概括
工艺奶酪的起始微生物组仍然不太了解. 这项研究在俄罗斯的初始食品中发现了三种Lactococcus lactis菌株,但令人惊的是,它们缺乏关键的芳香化合物生产.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 食品科学 食品科学 食品科学
背景情况:
- 奶酪开头中的微生物群落显著影响奶酪的特性.
- 了解手工奶酪微生物组对于质量控制和创新至关重要.
- 对于独特的手工奶酪品质负责的特定微生物联盟还没有明确定义.
研究的目的:
- 来自俄罗斯阿尔泰州Kosh-Agach的手工奶酪开胃的微生物组的特征.
- 为了识别特定的细菌菌株和它们在启动器中的遗传构成.
- 调查已识别的菌株的功能性质和代谢能力.
主要方法:
- 启动微生物组的元基因组分析.
- 纯细菌殖民地的隔离和培养.
- 选择单元的全基因组测序.
- 对rpoB基因进行生物信息分析以进行菌株分类.
- 微生物和显微镜的表征.
主要成果:
- 甲基因组分析揭示了三种细菌基因组的乳球菌乳酸菌.
- 17个不同的殖民地被隔离和排序.
- 生物信息学和微生物学分析证实了三种Lactococcus lactis亚种. 它们是"diacetilactis"菌株.
- 没有一种已识别的菌株产生了二甲或二氧化碳,特有的芳香化合物.
结论:
- 这项研究成功地描述了一种特定的手工奶酪开头的微生物组.
- 已识别的乳球菌乳酸菌亚种. 迪亚塞蒂拉克蒂斯菌株具有独特的代谢概况,缺乏典型的香味产生.
- 需要进一步的研究,以了解这些非典型菌株在手工奶酪制造中的功能作用和影响.
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