STRAIN OF LACTOBACILLUS MICROORGANISM LACTOBACILLUS BULGARICUS CNCM 1-1968 DEVOID beta-GALACTOSIDASE ACTIVITY, FERMENT COMPRISING INDICATED STRAIN FOR PREPARING FERMENTED-MILK PRODUCT, FERMENTED-MILK PRODUCT AND METHOD FOR IT PREPARING

摘要

FIELD: biotechnology, microbiology. ^ SUBSTANCE: invention can be used for preparing fermented-milk foodstuffs. The strain L. bulgaricus, CNCM 1-1968, carries nonsence mutation in at least one of sequences encoding lactose operon and this strain has no beta-galactosidase activity. Method involves preparing the ferment for lactobacillus fermentation including above indicated strain and used for preparing fermented-mild foodstuffs where glucose is added. Yoghurt is preferable such foodstuffs. Invention provides low secondary souring product and retaining cell population and their high surviving. ^ EFFECT: improved preparing method, valuable properties of strain and ferment. ^ 7 cl, 4 tbl, 3 ex