Table 2. Viability of probiotic bacteria in fermented GOS-enriched skim milk (FGSM)

Fermentation time	SM		GSM
Fermentation time	0 h	24 h	0 h	24 h
Viable cell counts (Log CFU/mL)
4B15¹⁾	7.52±0.08^a	8.24±0.02^b	7.60±0.03^a	9.11±0.01^c
pH
4B15¹⁾	6.61	5.82	6.57	3.85

The results are indicated as the mean±SD (n=3).
Different letters represent significant differences among each groups, statistically (p<0.05).
4B15=Lactobacillus rhamnosus 4B15.
GOS, galacto-oligosaccharides; SM, skim milk; GSM, galacto-oligosaccharides enriched skim milk; FGSM, fermented GSM.