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    Method of producing Streptococcus thermophilus mutant strains
    6.
    发明授权
    Method of producing Streptococcus thermophilus mutant strains 有权

    公开(公告)号：US11564399B2

    公开(公告)日：2023-01-31

    申请号：US16615904

    申请日：2018-05-31

    Applicant: Chr. Hansen A/S

    Inventor： Jeorgos Trihaas ,  Thomas Janzen ,  Patrick Derkx

    IPC: A61K39/02 ,  A23C9/123 ,  C12N1/20 ,  C12N7/00 ,  C12N15/01 ,  C12R1/46

    Abstract: The present invention is directed to a method of producing a Streptococcus thermophilus strain comprising the steps of a) Providing a mother strain in the form of Streptococcus thermophilus DSM32502, b) Growing a culture of the mother strain in the presence of a bacteriophage, to which the mother strain is not resistant, to obtain a number of mutant strains, which are resistant to the said bacteriophage, c) Measuring the acidification time of the bacteriophage-resistant mutant strains and the mother strain in a milk base and selecting at least one mutant strain with a reduced acidification time as compared to the mother strain to obtain a fast-acidifying mutant strain.

    Lactic acid bacteria for a heat-treated food product for storage at ambient temperature
    9.
    发明授权
    Lactic acid bacteria for a heat-treated food product for storage at ambient temperature 有权

    公开(公告)号：US11606965B2

    公开(公告)日：2023-03-21

    申请号：US16300451

    申请日：2017-05-11

    Applicant: CHR. HANSEN A/S

    Inventor： Christian Gilleladen ,  Jeorgos Trihaas ,  Thomas Janzen ,  Mette Oehrstroem Runge

    IPC: A23L33/135 ,  A23C9/123 ,  A23C9/12

    Abstract: Process for producing an ambient storage food product comprising providing a food product with a pH of between 3.4 and 4.4, subjecting the food product to a heat treatment to obtain a heat treated food product, adding aseptically to the heat treated food product one or more of ambient storage lactic acid bacteria strains to obtain an ambient storage food product, and storing the ambient storage food product at ambient temperature for a period of time, wherein the ambient storage lactic acid bacteria strain is selected from the group consisting of strains, (i) wherein the strain is capable of retaining viability at the end of 150 days at a temperature of 25#C, and (ii) wherein the pH at most decreases 0.8 units during the storage period, and (iii) wherein the strain is selected from the group consisting of Lactobacillus paracasei, Lactobacillus rhamnosus, Lactobacillus fermentum and Lactobacillus delbrueckii subsp. bulgaricus, and mutants and variants thereof.

    Bacteria
    10.
    发明授权
    Bacteria 有权

    公开(公告)号：US11345883B2

    公开(公告)日：2022-05-31

    申请号：US16093267

    申请日：2017-04-12

    Applicant: CHR. HANSEN A/S

    Inventor： Thomas Janzen ,  Sonja Bloch

    IPC: C12N1/20 ,  A23C9/123 ,  C12N9/10 ,  C12R1/225 ,  C12R1/245

    Abstract: The present invention relates to a novel Lactobacillus strain that is not attacked by common phages and a novel Lactobacillus strain with improved cell count stability, its use in the manufacture of fermented milk-based products, and novel milk based products containing the strain.

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