5.3 Â 108 cfu/ml, and remained stable during storage at 4 C, with
4.8 Â 108 cfu/ml after 14 days. However, according to the LAB
associated with it, the growth of P. f CB 129 was different. In Mix1-Pf
or Mix2-Pf, a limited growth of P. f CB129 was measured, increasing
about five-fold by comparison with the initial population, to reach
108 cfu/ml of fermented milk (day 7), the PAB/LAB ratios being then
close to 1/5 with Mix1-Pf and 1/9 with Mix2-Pf at Day 7. This
population was stable for the 14 days of storage at 4 C. In Mix3-Pf,
no growth of P. f CB129 was observed, with final counts