Table 1.

Cell yield, productivity and change of pH during pineapple juice fermentation supplemented by prebiotic.

	Time of prebiotic supplementation	Strains
		L. acidophilus La5	L. plantarum 299V	B. lactis Bb12
pH	No prebiotic	3.8	3.9	5.6
	8 h	3.8	3.9	4.4
	24 h	3.8	3.8	4.7
Cell count (cfu/ml)	No prebiotic	3.35*109	8.41*109	9.68*108
	8 h	5.46*109	7.09*109	1.46*109
	24 h	3.99*109	4.85*109	5.15*108
Productivity (cfu/ml*h)	No prebiotic	1.38*108	3.49*108	4.02*107
	8 h	2.25*108	2.94*108	6.08*107
	24 h	1.64*108	2.01*108	2.14*107