Official DSMZ medium: This medium was manually curated by experts from the DSMZ.
* Modification: Replace butyric acid with 1.70 g/l crotonic acid.
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
Solution A | 952 | ml | - | - | |
Solution B | 30 | ml | - | - | |
Solution C | 1 | ml | - | - | |
Solution D | 10 | ml | - | - | |
Solution E | 10 | ml | - | - | |
Solution F | 10 | ml | - | - | |
1 Add and dissolve ingredients of solution A, adjust pH to 7.2 and sparge medium with 80% N2 and 20% CO2 gas mixture for 30 - 45 min to make it anoxic. Dispense medium under the same gas atmosphere into anoxic Hungate-type tubes and autoclave. Solution B is prepared under 80% N2 and 20% CO2 gas atmosphere and autoclaved. Solution C is prepared under 100% N2 gas and sterilized by filtration. Solutions D, E and F are autoclaved under 100% N2 gas atmosphere. To complete the medium appropriate amounts of solutions B to F are added to the sterile solution A in in the sequence as indicated. | |||||
2 Note: Some cultures are shipped in semi-solid medium which stimulates growth at the beginning. For agar stabs 3.00 g/l agar are added to the complete medium from a sterile anoxic stock solution (2% w/v). Upon receipt add anoxically 1 - 2 ml of the recommended freshly prepared liquid medium to the agar tube and incubate for 3 - 5 days . After incubation transfer 0.5 ml of the resulting cell suspension in the liquid phase to tubes with liquid medium. |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
---|---|---|---|---|
KH2PO4 | 0.50 | g | 0.525 | 3.859 |
MgCl2 x 6 H2O | 0.33 | g | 0.347 | 1.705 |
NaCl | 0.40 | g | 0.42 | 7.19 |
NH4Cl | 0.40 | g | 0.42 | 7.855 |
CaCl2 x 2 H2O | 0.05 | g | 0.053 | 0.357 |
Trace element solution SL-10 | 1.00 | ml | - | - |
Clarified rumen fluid | 50.00 | ml | - | - |
Trypticase peptone
(BD BBL) |
1.00 | g | 1.05 | - |
Sodium resazurin
(0.1% w/v) |
0.50 | ml | 5.3e-4 | 0.002 |
Distilled water | 900.00 | ml | - | - |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
---|---|---|---|---|
Na2CO3 | 1.5 | g | 50 | 471.752 |
Distilled water | 30.0 | ml | - | - |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
---|---|---|---|---|
Butyric acid* | 1.7 | g | 170 | 1929.41 |
Crotonic acid* | 1.7 | g | - | - |
Distilled water | 10.0 | ml | - | - |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
---|---|---|---|---|
L-Cysteine HCl x H2O | 0.3 | g | 30 | 170.808 |
Distilled water | 10.0 | ml | - | - |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
---|---|---|---|---|
Na2S x 9 H2O | 0.3 | g | 30 | 124.905 |
Distilled water | 10.0 | ml | - | - |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
HCl
(25%) |
10.0 | ml | 2.5 | 68.568 | |
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 | 990.0 | ml | - | - | |
1 First dissolve FeCl2 in the HCl, then dilute in water, add and dissolve the other salts. Finally make up to 1000.00 ml. |
1 Rumen fluid from cow or sheep (obtained from fistulated animals or abattoir refuse) is filtered through muslin, autoclaved at 121°C for 15 min and then centrifuged at 27,000 g for 20 min. The supernatant is made anoxic by sparging with 100% N2 gas for 15 min, dispensed under same gas atmosphere into anoxic serum vials to 30% of volume and then stored frozen at -20°C. |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] |
---|---|---|---|---|
Vitamin B12 | 100 | mg | 0.1 | 0.074 |
p-Aminobenzoic acid | 80 | mg | 0.08 | 0.583 |
D-(+)-biotin | 20 | mg | 0.02 | 0.082 |
Nicotinic acid | 200 | mg | 0.2 | 1.625 |
Calcium pantothenate | 100 | mg | 0.1 | 0.21 |
Pyridoxine hydrochloride | 300 | mg | 0.3 | 1.459 |
Thiamine-HCl x 2 H2O | 200 | mg | 0.2 | 0.536 |
Distilled water | 1000 | ml | - | - |
Last modified: | 28.02.22 |
Source: | DSMZ |
Taxonomic range: | Bacteria |
Medium type: | Complex medium |
Final pH: | 7.2 |
Equipment needed: | Autoclave, Centrifuge, 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] |
---|---|---|
Crotonic acid | 1.678 | 19.493 |
Na2CO3 | 1.481 | 13.971 |
Trypticase peptone | 0.987 | - |
KH2PO4 | 0.494 | 3.627 |
NH4Cl | 0.395 | 7.382 |
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