Process for preparing starter cultures of lactic acid bacteria
AssigneeInstitut National de la Recherche Agronomique
InventorsPatrick Duwat, Anne Bravard, Sophie Sourice, Alexandra Gruss
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Abstract
A process for preparing lactic acid bacterial starter cultures, which comprises: culturing at least one strain of lactic acid bacteria under aeration and in an appropriate nutrient medium, in which at least one porphyrin compound is present or is added; harvesting the bacteria at the end of said culture. A method of using lactic acid bacterial starter cultures obtained according to said process for preparing a fermented product.
Claims25
1-13. (Canceled)
A process for preparing a lactic acid bacterial starter culture, comprising:
- culturing at least one strain of lactic acid bacteria under aeration in a nutrient medium which contains at least one porphyrin compound;
- and
- harvesting the cultured bacteria.
A process for increasing the survival of lactic acid bacteria, comprising
- culturing lactic acid bacteria under aerobic conditions in a medium containing at least one porphyrin compound.
32 The process of claim 27, wherein said lactic acid bacteria is selected from Lactococcus lactis subgroup strains MG1363, IL1403, IL582, IL801, IL896, Z105, Z106, and Z191.
A process for improving the survival of lactic acid bacteria during storage comprising:
- culturing lactic acid bacteria under aeration in a nutrient medium which contains at least one porphyrin compound;
- harvesting the cultured bacteria;
- and
- storing the harvested bacteria in a suitable medium at a suitable temperature,
- wherein the number of viable bacteria isolated from said stored bacteria is greater than the number of viable bacteria isolated from a stored culture of the same lactic acid bacteria cultured under similar conditions without aeration in a nutrient medium that does not contain a porphyrin compound.
A process for increasing the number of viable cells in a culture of lactic acid bacteria comprising:
- culturing at least one strain of lactic acid bacteria under aeration in a nutrient medium which contains at least one porphyrin compound,
- wherein the number of viable bacteria isolated cultured under aeration in the presence of the porphyrin is greater than the number of viable bacteria isolated from a culture of the same lactic acid bacteria cultured under similar conditions without aeration in a nutrient medium that does not contain a porphyrin compound.
Dependencies are inferred from the claim text.