Official DSMZ medium: This medium was manually curated by experts from the DSMZ.
| Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
|---|---|---|---|---|---|
| Solution A | 500 | ml | - | - | |
| Solution B | 500 | ml | - | - | |
| Solution C | 1 | ml | - | - | |
| Solution D | 1 | ml | - | - | |
| Solution E | 5 | ml | - | - | |
| Solution F | 10 | ml | - | - | |
| Solution G | 5 | ml | - | - | |
| Solution H | 10 | ml | - | - | |
| Solution I | 10 | ml | - | - | |
| 1 Sterilize solutions A and B in closed thick-walled screw-top bottles (e.g., SCHOTT) for 20 min at 120°C. The pH of solution A after sterilization should be 10. There is some precipitate forming that settles at the bottom after 3 - 4 days. It is best to remove precipitates by decantation before using solution A for medium preparation. | |||||
| 2 Combine solution A with solution B and sparge medium with 100% N2 gas for at least 30 - 45 min to make it anoxic, then dispense under same gas atmosphere into anoxic Hungate-type tubes or serum vials and autoclave. Solutions C to I are sterilized separately under 100% N2 gas. Vitamins and pyruvate should be sterilized by filtration. To complete the medium appropriate amounts of solutions C to I are added to the combined sterile solutions A and B in the sequence as indicated. Final pH of the medium should be 9.5. | |||||
| 3 Note: Addition of 10 - 20 mg sodium dithionite per liter (e.g. from 5% (w/v) solution, freshly prepared under N2 and filter-sterilized) may stimulate growth at the beginning. For transfers use 5 - 10% inoculum. | |||||
| Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
|---|---|---|---|---|
| Na2CO3 | 92.5 | g | 185 | 1745.48 |
| NaHCO3 | 17.5 | g | 35 | 416.632 |
| NaCl | 8.0 | g | 16 | 273.785 |
| K2HPO4 | 0.5 | g | 1 | 5.741 |
| Distilled water | 500.0 | ml | - | - |
| Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
|---|---|---|---|---|
| NaCl | 120.00 | g | 240 | 4106.78 |
| K2HPO4 | 1.25 | g | 2.5 | 14.353 |
| KCl | 2.50 | g | 5 | 67.069 |
| Distilled water | 500.00 | ml | - | - |
| Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
|---|---|---|---|---|
| Trace elements solution (Pfennig, 1965) | 1 | ml | - | - |
| Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
|---|---|---|---|---|
| NH4Cl | 0.20 | g | 40 | 747.803 |
| MgSO4 x 7 H2O | 0.25 | g | 50 | 202.86 |
| Distilled water | 5.00 | ml | - | - |
| Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
|---|---|---|---|---|
| Na-pyruvate | 2.2 | g | 220 | 1999.2 |
| Distilled water | 10.0 | ml | - | - |
| Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
|---|---|---|---|---|
| Yeast extract | 0.5 | g | 100 | - |
| Distilled water | 5.0 | ml | - | - |
| Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
|---|---|---|---|---|
| Na2S x 9 H2O | 0.25 | g | 25 | 104.088 |
| Distilled water | 10.00 | ml | - | - |
| Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
|---|---|---|---|---|---|
| EDTA | 5.00 | g | 5 | 17.109 | |
| FeSO4 x 7 H2O | 2.20 | g | 2.2 | 7.913 | |
| ZnSO4 x 7 H2O | 0.10 | g | 0.1 | 0.348 | |
| MnCl2 x 4 H2O | 0.03 | g | 0.03 | 0.152 | |
| H3BO3 | 0.03 | g | 0.03 | 0.485 | |
| CoCl2 x 6 H2O | 0.20 | g | 0.2 | 1.54 | |
| CuCl2 x 2 H2O | 0.03 | g | 0.03 | 0.176 | |
| NiCl2 x 6 H2O | 0.03 | g | 0.03 | 0.231 | |
| Na2MoO4 x 2 H2O | 0.03 | g | 0.03 | 0.124 | |
| Distilled water | 1000.00 | ml | - | - | |
| 1 pH 3.0-4.0 | |||||
| Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
|---|---|---|---|---|
| NaOH | 0.5 | g | 0.5 | 12.501 |
| Na2SeO3 x 5 H2O | 3.0 | mg | 0.003 | 0.011 |
| Na2WO4 x 2 H2O | 4.0 | mg | 0.004 | 0.012 |
| Distilled water | 1000.0 | ml | - | - |
| Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
|---|---|---|---|---|
| Biotin | 2.0 | mg | 0.002 | 0.008 |
| Folic acid | 2.0 | mg | 0.002 | 0.005 |
| Pyridoxine hydrochloride | 10.0 | mg | 0.01 | 0.049 |
| Thiamine HCl | 5.0 | mg | 0.005 | 0.015 |
| Riboflavin | 5.0 | mg | 0.005 | 0.013 |
| Nicotinic acid | 5.0 | mg | 0.005 | 0.041 |
| Calcium D-(+)-pantothenate | 5.0 | mg | 0.005 | 0.021 |
| Vitamin B12 | 0.1 | mg | 1.0e-4 | 7.4e-5 |
| p-Aminobenzoic acid | 5.0 | mg | 0.005 | 0.036 |
| (DL)-alpha-Lipoic acid | 5.0 | mg | 0.005 | 0.024 |
| Distilled water | 1000.0 | ml | - | - |
| Last modified: | 28.01.25 |
| Source: | DSMZ |
| Taxonomic range: | Bacteria |
| Medium type: | Complex medium |
| Final pH: | 9.5 |
| Equipment needed: | Autoclave, Filter, Gassing station, Hungate tubes |
| Edit in Medium builder | |
Detailed instructions for the cultivation of anaerobes including important warnings can be found in the cultivation instructions .
| All strains for this medium: | 1 |
| Compound | Conc. [g/L] | Conc. [mM] |
|---|---|---|
| NaCl | 115.163 | 1970.62 |
| Na2CO3 | 88.772 | 837.562 |
| NaHCO3 | 16.795 | 199.919 |
| KCl | 2.399 | 32.183 |
| Na-pyruvate | 2.111 | 19.186 |
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