The juice of the cladodes of Opuntia ficus indica whose composition highlights an interesting content in secondary metabolites, fibers and mineral substances, can justify its use for the proliferation of lactic acid bacteria during fermentation. The kinetics of growth of these two bacteria : Streptococcus sp and Lactobacillus sp shows that in the presence of juice of cladodes of Opuntia ficus indica to 5 %, the values of the absorbance at 600nm peaks are present much more important than those of the control sample in its absence. The statistical analysis through the software Excel 2007 results, confirmed that there is a very signify difference between the growth of control sample and the one with the presence of 5% of the juice of cladodes of Opuntia ficus indica, either p=0.00356991 for the case of Lactobacillus sp and p= 0.008129737 for Streptococcus sp.