Table 1.

Composition of modified MRS2 media.

	MRS2 G	MRS2	MRS2-Wh	MRS2-3′SL
Yeast extract (g/l)	15.5	15.5	15.5	15.5
Peptone of casein (g/l)	15.5	15.5	15.5	15.5
K2HPO4 (g/l)	0.9	0.9	0.9	0.9
KH2PO4 (g/l)	0.9	0.9	0.9	0.9
NaCl (g/l)	0.009	0.009	0.009	0.009
MnSO4.H2O (g/l)	0.17	0.17	0.17	0.17
MgSO4.7H2O (g/l)	0.007	0.007	0.007	0.007
FeSO4.7H2O (g/)	0.009	0.009	0.009	0.009
Tween 80 (ml/l)	0.9	0.9	0.9	0.9
Cysteine (g/l)	0.4	0.4	0.4	0.4
Glucose (g/l)	–	20	10	–
Whey (ml/l)	–	–	500	–
3′-sialyllactose (g/l)	–	–	–	0.85