To investigate the effects of varying doses of garlic on the growth of the bacteria Bifidobacterium
bifidum and Lactobacillus acidophilus in the probiotic milk (first passage) and yoghurt (second passage),
0.33 gram of the lyophilized probiotic bacteria was separately added to one liter of low fat sterilized milk.
The samples were then examined in terms of pH, acidity and microbial count during the incubation period and
permanence. In day seven, the products were sensory evaluated. The results of the filled questionnaires in
statistical descriptive test were analyzed using SPSS version 17. In the samples containing Lactobacillus
acidophilus, it was observed that the increased garlic concentration resulted in favorable color, thickness,
taste, flavor and scent. However, there were no significant differences between the samples with
Bifidobacterium bifidum in terms of sensory features. The bio ability of probiotic bacteria was measured by
direct counting method. Product shelf life was determined to be 21 days during which the bacterial count
decreased but not less than 109. It was also shown that the milk with Bifidobacterium bifidum was more
effective in reducing cholesterol than the milk with Lactobacillus acidophilus. The milk with Lactobacillus
acidophilus was more effective in reducing triglycerides than the counter part with Bifidobacterium bifidum.
A positive correlation was observed between the increased concentrations of garlic in the milk with
Lactobacillus acidophilus.