Official DSMZ medium: This medium was manually curated by experts from the DSMZ.
* Modification: Supplement medium with 10.00 g/l sulfur and increase amount of yeast extract to 1.00 g/l. Sulfur is sterilized separately by steaming for 3 h on each of three successive days.
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
KCl | 0.33 | g | 0.323 | 4.331 | |
MgCl2 x 6 H2O | 0.52 | g | 0.509 | 2.503 | |
CaCl2 x 2 H2O | 0.29 | g | 0.284 | 1.93 | |
NH4Cl | 0.33 | g | 0.323 | 6.037 | |
KH2PO4 | 0.33 | g | 0.323 | 2.373 | |
Trace element solution SL-11 | 1.00 | ml | - | - | |
Sodium resazurin
(0.1% w/v) |
0.50 | ml | 4.9e-4 | 0.002 | |
NaHCO3 | 1.00 | g | 0.978 | 11.648 | |
Yeast extract* | 1.00 | g | - | - | |
Wolin's vitamin solution (10x) | 1.00 | ml | - | - | |
Neutralized sulfide solution 3% (w/v) | 20.00 | ml | - | - | |
Sulfur* | 10.00 | g | - | - | |
Distilled water | 1000.00 | ml | - | - | |
1 Dissolve ingredients except bicarbonate, yeast extract, vitamins and sulfide, then sparge medium with 100% N2 gas for 30 - 45 min to make it anoxic. Dispense medium under same gas atmosphere into anoxic Hungate-type tubes or serum vials to 30% of their volume and autoclave. Add yeast extract, vitamins (sterilized by filtration) and sulfide from sterile anoxic stock solutions prepared under 100% N2 gas atmosphere and bicarbonate from a sterile anoxic stock solution prepared under 80% N2 and 20% CO2 gas mixture. Neutralize the sodium sulfide with sterile H2SO4 (see medium 29). After completing the medium adjust pH to 6.8-7.0. | |||||
2 Inoculated vessels are pressurized with sterile carbon monoxide gas to 2 bar overpressure. |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
Na2-EDTA x 2 H2O | 5.2 | g | 5.2 | 15.467 | |
FeCl2 x 4 H2O | 1.5 | g | 1.5 | 7.545 | |
ZnCl2 | 70.0 | mg | 0.07 | 0.514 | |
MnCl2 x 4 H2O | 100.0 | mg | 0.1 | 0.505 | |
H3BO3 | 6.0 | mg | 0.006 | 0.097 | |
CoCl2 x 6 H2O | 190.0 | mg | 0.19 | 1.463 | |
CuCl2 x 2 H2O | 2.0 | mg | 0.002 | 0.012 | |
NiCl2 x 6 H2O | 24.0 | mg | 0.024 | 0.185 | |
Na2MoO4 x 2 H2O | 36.0 | mg | 0.036 | 0.149 | |
Distilled water | 1000.0 | ml | - | - | |
1 Dissolve EDTA in 800 ml distilled water, adjust pH to 7 using 2 N NaOH and add ferrous chloride. After ferrous chloride has dissolved add other compounds. Finally adjust pH to 6.0 and bring volume to 1000 ml. |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
---|---|---|---|---|
Biotin | 20 | mg | 0.02 | 0.082 |
Folic acid | 20 | mg | 0.02 | 0.045 |
Pyridoxine hydrochloride | 100 | mg | 0.1 | 0.486 |
Thiamine HCl | 50 | mg | 0.05 | 0.148 |
Riboflavin | 50 | mg | 0.05 | 0.133 |
Nicotinic acid | 50 | mg | 0.05 | 0.406 |
Calcium D-(+)-pantothenate | 50 | mg | 0.05 | 0.21 |
Vitamin B12 | 1 | mg | 1.0e-3 | 7.4e-4 |
p-Aminobenzoic acid | 50 | mg | 0.05 | 0.365 |
(DL)-alpha-Lipoic acid | 50 | mg | 0.05 | 0.242 |
Distilled water | 1000 | ml | - | - |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
Na2S x 9 H2O | 3 | g | 30 | 124.905 | |
Distilled water | 100 | ml | - | - | |
1 The sulfide solution is prepared in a 250 ml screw-capped bottle with a butyl rubber septum and a magnetic stirrer. The solution is bubbled with nitrogen gas, closed and autoclaved for 15 min. at 121°C. After cooling to room temperature the pH is adjusted to about 7.0 by adding of sterile 2 M H2SO4 drop-wise with a syringe without opening the bottle. |
Last modified: | 27.10.22 |
Source: | DSMZ |
Taxonomic range: | Bacteria |
Taxonomic range: | Archaea |
Medium type: | Complex medium |
Final pH: | 6.8 - 7.0 |
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 .
Compound | Conc. [g/L] | Conc. [mM] |
---|---|---|
Sulfur | 9.785 | 305.106 |
NaHCO3 | 0.978 | 11.648 |
Yeast extract | 0.978 | - |
Na2S x 9 H2O | 0.587 | 2.444 |
MgCl2 x 6 H2O | 0.509 | 2.503 |
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