# 1391: MMJHSY MEDIUM (modified) ## Main sol. 1391 20 g NaCl 0.09 g K2HPO4 0.07 g KH2PO4 0.8 g CaCl2 x 2 H2O 1 g NH4Cl 1 g NaNO3 4 g MgSO4 x 7 H2O 3 g MgCl2 x 6 H2O 0.33 g KCl 0.01 g FeSO4 x 7 H2O 2 g Na2S2O3 x 5 H2O 0.01 g Fe(III) citrate 2 g Yeast extract 5 ml **Trace mineral solution** 1000 ml Distilled water 1. Prepare the medium under N2/CO2 (80%N2, 20%CO2) and fill in , the pH of the medium is adjusted with NaOH to 6.8. After autoclaving, the separately autoclaved, concentrated solutions including each of follows are added to the medium. Then a mix gas (80%H2, 20%CO2) is purged for 5 min. 2. Finally, the mix gas (77%H2, 20%CO2, 3%O2) is compressed into gas phase (>80% volume of the tube or bottle) at 2 atm. 1 ml **Wolin's vitamin solution** 0.1 % NaHCO3 ## Trace mineral solution 1.5 g Nitrilotriacetic acid 0.5 g MnSO4 x n H2O 0.5 g CoSO4 x 7 H2O 0.18 g ZnSO4 x 7 H2O 0.01 g CuSO4 x 5 H2O 0.02 g AlK(SO4)2 x 12 H2O 0.01 g H3BO3 1 mg Na2MoO4 x 2 H2O 0.01 g SrCl2 x 6 H2O 0.01 g NaBr 0.01 g KI 0.1 g NiCl2 x 6 H2O 0.1 g Na2SeO3 x 5 H2O 1 g Fe2(SO4)3 x n H2O 0.1 g H2WO4 1000 ml Distilled water ## Wolin's vitamin solution 2 mg Biotin 2 mg Folic acid 10 mg Pyridoxine hydrochloride 5 mg Thiamine HCl 5 mg Riboflavin 5 mg Nicotinic acid 5 mg Calcium D-(+)-pantothenate 0.1 mg Vitamin B12 5 mg p-Aminobenzoic acid 5 mg (DL)-alpha-Lipoic acid 1000 ml Distilled water