Official DSMZ medium: This medium was manually curated by experts from the DSMZ.
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
Trypticase peptone
(BD BACTO) |
16.0 | g | 15.686 | - | |
Yeast extract
(OXOID) |
7.0 | g | 6.863 | - | |
NaCl | 5.0 | g | 4.902 | 83.88 | |
L-Cysteine HCl x H2O | 0.5 | g | 0.49 | 2.791 | |
NaHCO3 | 0.5 | g | 0.49 | 5.835 | |
Haemin solution | 5.0 | ml | - | - | |
Vitamin K1 solution | 5.0 | ml | - | - | |
Sodium resazurin
(0.1% w/v) |
0.5 | ml | 4.9e-4 | 0.002 | |
Methanol
(15% v/v) |
10.0 | ml | 7.765 | 242.329 | |
DL-Dithiothreitol | 1.0 | g | 0.98 | 6.354 | |
Distilled water | 1000.0 | ml | - | - | |
1 Dissolve ingredients except for methanol and dithiothreitol. Adjust pH to 7.5 with 1 N NaOH and sparge medium with 100% N2 gas for 30 - 45 min to make it anoxic. Distribute medium under 100% N2 gas atmosphere into anoxic Hungate-type tubes or serum vials to 30% of their volume and autoclave. After sterilization add methanol from a sterile anoxic stock solution (15% v/v) autoclaved under 100% N2 gas atmosphere and dithiothreitol from an anoxic stock solution sterilized by filtration. Before use check the pH of the complete medium and adjust it to 7.6 - 7.8, if necessary. | |||||
2 After inoculation, add sterile 80% H2 and 20% CO2 gas mixture to 0.5 bar overpressure. After growth becomes visible overpressure of 80% H2 and 20% CO2 gas mixture can be increased to 1 bar. | |||||
3 Note: Use 10% (v/v) as inoculum. |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
Haemin | 50 | mg | 0.5 | 0.767 | |
NaOH
(1 N) |
1 | ml | - | - | |
Distilled water | 100 | ml | - | - | |
1 Dissolve 50 mg haemin in 1 ml 1 N NaOH; make up to 100 ml with distilled water and filter sterilize. Store refrigerated. |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
Vitamin K1 | 0.1 | ml | - | - | |
Ethanol
(95 %) |
20.0 | ml | 950 | 20620.8 | |
1 Dissolve 0.1 ml of vitamin K1 in 20 ml 95% ethanol and filter sterilize. Store refrigerated in a brown bottle. |
Last modified: | 13.12.22 |
Source: | DSMZ |
Taxonomic range: | Archaea |
Medium type: | Complex medium |
Final pH: | 7.6 - 7.8 |
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 |