Starter culture production
AssigneeStichting Bedrijven Van Het Nederlands Instituut voor Zuivelonderzoek
InventorsGerhard Hup, Jacobus Josephus Stadhouders
Life of this patent
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Abstract
Bacteria cultures for use as an inoculant in the preparation of starters and fermented milk products are produced by culturing a milk sugar fermenting bacteria on a culture medium containing whey, a non-whey protein in an amount of about 0.1 to 0.5 weight percent and a buffer mixture. After culturing, the bacteria may be concentrated and freeze dried to produce a starter culture concentrate which can be added directly to cheese milk. When preparing the culture medium, the whey and non-whey protein are pasteurized separately.
Claims14
A method of producing a composition for use as an inoculant material in the preparation of starters and fermented milk products, comprising (a) cultivating a culture of at least one strain of milk sugar fermenting bacteria in a culture medium consisting essentially of (1) undemineralized whey, (2) an aqueous dispersion of added non-whey protein selected from the group consisting of soya protein and milk casein in such an amount that the culture medium contains about 0.1 to 0.5 weight percent non-whey protein, and (3) a buffer mixture, said culture medium being prepared by separately pasteurizing said whey, said aqueous dispersion of non-whey protein and said buffer and mixing together the resultant pasteurized whey, aqueous dispersion of non-whey protein and buffer, (b) centrifuging the culture medium after said cultivating to concentrate more than 90% of the bacteria into a volume of about 2% of that of the culture medium prior to centrifuging and (c) freeze drying the bacteria concentrate to produce a composition which can be added directly to milk.
Dependencies are inferred from the claim text.