PRESERVATION OF STREPTOCOCCUS THERMOPHILUS STRAINS AFTER LONG-TERM STORAGE IN LYOPHILIZED STATE
Bozhana Gyosheva*, Iyanka Petrova and Mariana Mutafchieva
LB Bulgaricum - Research, Development and Production Centre,
“Lagera”, bl. 44A, 1612 Sofia, Bulgaria
Summary
The stability
of 75 strains Streptococcus thermophilus, preserved during 10 years in
lyophilized state, was studied. It was found out, that all the investigated
strains were viable. No change in their morphological, biochemical and
technological characteristics was registered.