cal tests, the rod- or spherical-shaped gram-positive and
catalase-negative single colonies that could belong to
the Lactobacillus genus were isolated. A total of 125
bacteria were isolated from yogurt and colostrum. Of
these, only 17 isolates belonged to Lactobacillus genus
(Table 1).
Amplification and sequencing of 16S rRNA
The presence of Lactobacillus strains in the samples was
confirmed by amplification of 1500 bp fragments of 16S
rRNA gene with genus-specific primers. Among 17
strains, 11 were isolated from colostrum, whereas six were
isolated from yogurt. According to results and FAO/
WHO guidelines, identification of microorganisms by 16S