| Added lactose concentration (%) | Streptococcus thermophilus ST-M5 | Lactobacillus bulgaricus LB-12 |
| Log CFU/mL | ||
| Control (0) | 0.15 | 1.65 |
| One | 0.54 | 2.31 |
| Three | 0.25 | 2.11 |
| Five | 0.38 | 2.09 |