Table 1. Effect of pH buffer on the growth of L. lactis

Strain	Medium	CFU/mL
Lactococcus lactis	M17	4.6×109
	Disodium-β-glycerophosphate (1.9%)1)	1.1×108
	Potassium citrate (0.5%)2)	6.7×108

2% glucose+2% yeast extract+0.5% soy peptone+0.05% ascorbic acid+1.9% disodium β-glycerophosphate.
2% glucose+2% yeast extract+0.5% soy peptone+0.05% ascorbic acid+0.5% potassium citrate.