New lactic acid bacteria
AssigneeInternational N&H Denmark Aps
InventorsArmelle COCHU-BLACHÈRE, Christophe FREMAUX, Thomas DESFOUGÈRES, Anaïs JEDRZEJOWSKI
Life of this patent
Estimating the term…
Abstract
The invention relates to a lactose-positive, galactose-negative, Streptococcus thermophilus strain carrying a mutation in 2 or 3 genes selected from the group consisting of 1) a gene encoding a protein of the mannose-glucose-specific PTS and a glcK gene, 2) a gene encoding a protein of the mannose-glucose-specific PTS and a ccpA gene, and 3) a gene encoding a protein of the mannose-glucose-specific PTS, a glcK gene and a ccpA gene, wherein said strain, when used to ferment milk, provides a low lactose fermented milk and/or a fermented milk not undergoing acidification when stored at fermentation temperature.
Claims15
1-30. (canceled)
A lactose-positive, galactose-negative, Streptococcus thermophilus strain comprising:
- at least one mutated gene encoding a protein of the mannose-glucose-specific phosphotransferase system (mannose-glucose-specific PTS), the glucose import activity of which is decreased or abolished, and
- at least one mutated gene selected from the group consisting of:
- a) a mutation in a glucokinase (glcK) gene,
- b) a mutation in a Catabolite Control Protein A (ccpA) gene;
- and
- c) a combination thereof,
- wherein when said strain is fermented in milk, the lactose-positive, galactose-negative, Streptococcus thermophilus strain decreases a lactose concentration by at least 54% compared to a parental strain.
Dependencies are inferred from the claim text.