Evaluation Of The Primary Metabolism Of Monocultures And Yoghurt Starters With The Participation Of Urease-Deficient Streptococcus Thermophilus Strains
نویسندگان
چکیده
The aim of the present work was to evaluate the influence of the lack of urease activity in some Streptococcus thermophilus strains on the primary metabolism during lactic acid fermentation. A comparison of the kinetics of the lactic acid process with the participation of ureautilizing and urease deficient streptococcal strains was performed. It was found that the lack of urease activity in the streptococcal strains had no significant effect on the primary metabolism of the monocultures or the yoghurt starters.
منابع مشابه
Selection and characterization of naturally occurring high acidification rate Streptococcus thermophilus strains
Among Streptococcus thermophilus cultures, the principle component of yoghurt and cheese starters, a minority of strains forms the group of 'H'-strains which show an unusually high acidification rate, grow faster and coagulate milk 3-5 hours earlier than the typical S. thermophilus cultures. A large-scale screening study was performed to select 'H'-strains of S. thermophilus from more than 100 ...
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