Streptococcus thermophilus starter strain
AssigneeDsm IP Assets B.V.
InventorsLourdes Mariela SERRANO DAVALOS, Paul KLAASSEN, Ali MAY, Sofia DASHKO, Claire Emile PRICE, Paulus Petrus DE WAAL
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Abstract
The invention relates to the field of dairy technology. The invention specifically relates to a Streptococcus thermophilus starter strain and composition comprising such strain, to methods to produce a fermented milk product using such strain or composition and to dairy products produced using such strain or composition.
Claims25
An isolated Streptococcus thermophilus strain, wherein the activity of a native ABC transporter complex ATP binding protein or a component thereof, is reduced, impaired, or disabled.
An isolated Streptococcus thermophilus strain CBS149207 and mutants and variants thereof or an isolated Streptococcus thermophilus strain CBS149208 and mutants and variants thereof, wherein said mutants and variants thereof optionally comprise at least one mutation selected from the groups of mutations consisting of:
- F1 to F43, optionally selected from the group consisting of F-1, F-10, F-18, F-22, F-29, and F-42 and combinations thereof, each as depicted in Table 1;
- and
- C1 to C35, optionally selected from the group consisting of C-2, C-19, C-20, C-22, C-28, C-29 and C-33 and combinations thereof, each as depicted in Table 2.
An isolated Streptococcus thermophilus strain having a genome with at least 80% sequence identity to the genome of Streptococcus thermophilus ASCC1275 or Streptococcus thermophilus MN-ZLW-002, wherein the isolated Streptococcus thermophilus strain demonstrates the same or substantially the same milk acidification characteristics as Streptococcus thermophilus strain CBS149207 or CBS149208 in the preparation of a fermented milk product, wherein the milk acidification characteristics in the preparation of a fermented milk product comprise acidification of a milk substrate to a pH of about or exactly 4.6 in less than 5 hours and a pH variation of less than 0.2 unit during storage of the freshly prepared milk product at 25° Celsius for 28 days, and wherein the Streptococcus thermophilus strain comprises at least one mutation selected from the groups of mutations consisting of:
- F1 to F43, optionally selected from the group consisting of F-1, F-10, F-18, F-22, F-29, and F-42 and combinations thereof, each as depicted in Table 1;
- and
- C1 to C35, optionally selected from the group consisting of C-2, C-19, C-20, C-22, C-28, C-29 and C-33 and combinations thereof, each as depicted in Table 2.
Dependencies are inferred from the claim text.