An aroma milk composition comprising diacetyl and uses thereof
AssigneeValio Ltd.
InventorsAnnamari Jukkola, Saija Laakso, Anja Valjus-Tiensuu, Pirjo Merimaa, Kristiina Kiviharju
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Abstract
The present invention relates to an aroma milk composition comprising diacetyl and diacetyl producing strains and a method of producing it. Further, the present invention relates to use of the aroma milk composition in the manufacture of a dairy product, in particular butter product. Finally, the present invention relates to a new bacterial strain of Lactococcus lactis ssp. lactis.
Claims18
-25. (canceled)
An aroma milk composition comprising at least two diacetyl producing strains selected from Lactococcus lactis ssp. lactis biovar. diacetylactis strains and/or L. lactis strains and diacetyl in an amount of at least 50 mg/kg in a milk based medium.
A method of preparing an aroma milk composition comprising at least one Lactococcus lactis ssp. lactis biovar. diacetylactis strain and/or L. lactis strain as diacetyl producing strain, and diacetyl in an amount of at least 50 mg/kg in a milk based medium which method comprises
- providing at least one Lactococcus lactis ssp. lactis biovar. diacetylactis strain or L. lactis strain and a growth medium comprising lactose, citrate, yeast extract and/or casein hydrolysate, and mixing said strain with said medium;
- and
- incubating the mixture thus obtained for 10 to 28 hours in conditions optimized with regard to pH, aeration, mixing and temperature to provide the aroma milk composition comprising at least one Lactococcus lactis ssp. lactis biovar. diacetylactis strain or L. lactis strain and diacetyl in an amount of 50 mg/kg at the minimum based on the weight of a milk based medium.
Lactococcus lactis ssp. lactis biovar. diacetylactis DL2126, VTT E123249.
A dairy product containing or prepared by using Lactococcus lactis ssp. lactis biovar. diacetylactis DL2126, VTT E-123249.
Dependencies are inferred from the claim text.