Constituents Amount (g/l) Na2HPO4.2H2O 7.8 K2HPO4 6.8 MgSO4 0.2 NaNO3 0.085 Ca (NO3)2 4H2O 0.050 Ferrous ammonium citrate 0.01 Trace elements 1ml Trace element (1 ml) was added and the final volume was made 1 liter by adding distilled water and the pH was adjusted to 7.0.

Table 3: Composition of bacterial enrichment (minimal salt medium).