Mutant Lactobacillus bulgaricus strains free from beta-galactosidase activity
    3.
    发明授权
    Mutant Lactobacillus bulgaricus strains free from beta-galactosidase activity 有权
    突变体保加利亚乳杆菌菌株不含β-半乳糖苷酶活性

    公开(公告)号:US07563436B2

    公开(公告)日:2009-07-21

    申请号:US11056409

    申请日:2005-02-11

    IPC分类号: A61K35/74

    CPC分类号: C12R1/225 A23C9/1238

    摘要: The invention concerns mutant L. bulgaricus strains bearing a nonsense mutation, in at least one of the sequences coding for the lactose operon, and free from β-galactosidase activity, and lactic starters comprising these strains. The strains and starters can be used to obtain fermented milk products from glucose-added milk.

    摘要翻译: 本发明涉及具有无义突变的突变体保加利亚乳杆菌菌株,编码乳糖操纵子的至少一个序列,并且不含β-半乳糖苷酶活性,以及​​包含这些菌株的乳酸起始剂。 菌株和起始物可用于从葡萄糖添加的牛奶中获得发酵乳制品。

    Streptococcus thermophilus strain, fermentation process using such strain and product obtained
    6.
    发明授权
    Streptococcus thermophilus strain, fermentation process using such strain and product obtained 有权
    嗜热链球菌菌株,使用这种菌株和产品得到的发酵过程

    公开(公告)号:US06428829B1

    公开(公告)日:2002-08-06

    申请号:US09411658

    申请日:1999-10-04

    IPC分类号: A23C912

    CPC分类号: C12R1/46 A23C9/1238 C12N1/20

    摘要: The present invention encompasses a Streptococcus thermophilus strain that has been deposited at the Collection Nationale de Cultures de Microorganismes (CNCM) under No. I-it 1477 and mutants that share similar milk acidification characteristics. The invention also covers processes for using the novel strain to prepare fermented dairy products and fermented products produced by these processes. Strain No. I-1477 possesses unique milk acidification properties that distinguish it from other related bacterial strains. Most importantly, the claimed Streptococcus strain exhibits both a rapid rate of acidification, which reduces the risk of bacterial contamination and extremely low post-acidification activity following fermentation, which helps preserve the fermentation products.

    摘要翻译: 本发明包括已经在I-it 1477号的National Nationale de Cultures de Microorganismes(CNCM)收集的嗜热链球菌菌株和具有相似的乳酸特性的突变体。 本发明还涉及使用新菌株来制备发酵乳制品和通过这些方法生产的发酵产品的方法。 I-1477菌株具有独特的乳酸特性,可将其与其他相关细菌菌株区分开来。 最重要的是,所要求的链球菌菌株表现出快速的酸化,这降低了发酵后细菌污染的风险和极低的后酸化活性,这有助于保存发酵产物。