Table 1. Composition of various media for the cultivation of Rhodobacter capsulatus BR

Medium	Composition (per L)
Basal	2.7 g DL-malic acid, 0.8 g ammonium phosphate, 1 g tryptone, 3.76 g monosodium glutamate, 2 g yeast extract, 0.5 g K2HPO4, 0.5 g KH2PO4, and 2.1 mL trace elements (per L, 3 g FeSO4∙7H2O; 0.01 g H3BO3; 0.01 g Na2MoO4∙2H2O; 0.02 g MnSO4∙H2O; 0.01 g CuSO4∙5H2O; 0.01 g ZnSO4; and 0.5 g ethylenediamine tetraacetic acid); pH = 6.8
MYC	1 g DL-malic acid; 3 g yeast extract; and 2 g casamino acid; pH = 6.8
van Niel’s	10 g yeast extract, 1 g K2HPO4, and 0.5 g MgSO4; pH = 6.8