JCM 198 . JCM MEDIUM No. 198

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Equipment needed: Anaerobic workbench Autoclave Filter

Final pH: 7.4

Select a strain (optional):

ml
Compound Amount Unit
KH2PO4 0.75 g
K2HPO4 0.75 g
MnCl2 x 4 H2O 0.36 g
NH4Cl 1.00 g
NaHCO3 4.00 g
Trace mineral solution 9.00 ml
Trace vitamins 10.00 ml
Na2S x 9 H2O 0.50 g
L-Cysteine HCl x H2O 0.50 g
Resazurin 1.00 mg
Distilled water 1000.00 ml
1 Mix ingredients, except NaHCO3, Trace vitamins, Na2S x 9H2O and L-cysteine x HCl x H2O, and autoclave under a H2-CO2 (80:20) atmosphere. Filter-sterilize NaHCO3 as 8% solution and Trace vitamins while gassing with N2. Separately autoclave Na2S x 9H2O and L-cysteine x HCl x H2O as 5% solutions under a N2 atmosphere. Aseptically and anaerobically add the NaHCO3 solution and Trace vitamins to the medium under a H2-CO2 (80:20) atmosphere. Prior to inoculation, add sterile the Na2S x 9H2O and L-cysteine x HCl solutions, and adjust pH to 7.4. Pressurize inoculated bottles to 200 kPa H2-CO2 (80:20).

Trace mineral solution #

1000
Compound Amount Unit
Nitrilotriacetic acid 4.500 g
FeCl2 x 4 H2O 0.400 g
MnCl2 x 4 H2O 0.100 g
CoCl2 x 6 H2O 0.170 g
ZnCl2 0.100 g
CaCl2 x 2 H2O 0.020 g
H3BO3 0.019 g
Na2MoO4 x 2 H2O 0.010 g
NiCl2 x 6 H2O 0.030 g
Distilled water 1000.000 ml
1 Adjust pH to 7.0 with 1 N KOH.