| 摘要 |
Bacterium of the genus Lactococcus having (1) a fermenting property such that upon culturing in a 10% reduced powdered skim milk medium within a temp erature range of 25° to 37°C for 16 hr, the medium solidifies, (2) a Bifidob acterium longum growth promoting property such that in a mixed culturing wit h Bifidobacterium longum in the above medium, when the pH value reaches 4.4 to 4.6, the number of Bifidobacterium longum bacteria is 5x108 CFU/g or more , and (3) a Bifidobacterium longum storage survivability enhancing property such that in a mixed culturing with Bifidobacterium longum in the above medi um, when the culture is rapidly cooled upon reaching of the pH value at 4.4 to 4.6 and stored at 10°C for two weeks, the survivability of Bifidobacteriu m longum is 30% or higher. |
