The persistence of the starter strains during fermentation was
monitored by strain typing and comparison of the genomic patterns.
Specifically, the isolates were collected from a given medium
at the highest dilutions of KLBs and, after PCR, the polymorphic
profiles were compared with those of the strains isolated from the
freeze-dried culture. This approach allowed the recognition and
monitoring of the added cultures and confirmed that the highest
levels estimated on a given medium was due to the inoculated
strains.