Official DSMZ medium: This medium was manually curated by experts from the DSMZ.
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
Clarified rumen fluid | 300.00 | ml | - | - | |
K2HPO4 | 0.30 | g | 0.3 | 1.721 | |
KH2PO4 | 0.30 | g | 0.3 | 2.202 | |
(NH4)2SO4 | 0.30 | g | 0.3 | 2.268 | |
NaCl | 0.60 | g | 0.599 | 10.257 | |
MgSO4 x 7 H2O | 0.13 | g | 0.13 | 0.527 | |
CaCl2 x 2 H2O
(0.1% w/v) |
8.00 | ml | 0.008 | 0.054 | |
Modified Wolin's mineral solution | 10.00 | ml | - | - | |
FeSO4 x 7 H2O
(0.1% w/v in 0.1 N H2SO4) |
2.00 | ml | 0.002 | 0.007 | |
Yeast extract
(DIFCO) |
1.00 | g | 0.999 | - | |
Trypticase
(BBL) |
1.00 | g | 0.999 | - | |
Fatty acid mixture | 20.00 | ml | - | - | |
Sodium resazurin
(0.1% w/v) |
0.50 | ml | 5.0e-4 | 0.002 | |
NaHCO3 | 2.00 | g | 1.998 | 23.784 | |
Wolin's vitamin solution (10x) | 1.00 | ml | - | - | |
L-Cysteine HCl x H2O | 0.50 | g | 0.5 | 2.844 | |
Na2S x 9 H2O | 0.50 | g | 0.5 | 2.08 | |
Distilled water | 660.00 | ml | - | - | |
1 Dissolve ingredients (except bicarbonate, vitamins, cysteine and sulfide) and sparge medium for 30 - 45 min with 80% H2 and 20% CO2 gas mixture to make it anoxic. Add and dissolve bicarbonate and adjust pH to 6.8, then distribute under same gas atmosphere into anoxic Hungate-type tubes or serum vials and autoclave. After sterilization add cysteine and sulfide from sterile anoxic stock solutions autoclaved under 100% N2 gas atmosphere. Vitamins are prepared under 100% N2 gas atmosphere and sterilized by filtration. Adjust pH of complete medium to 6.5. For incubation use sterile 80% H2 and 20% CO2 gas mixture at two atmospheres of pressure. |
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] | |
---|---|---|---|---|---|
Nitrilotriacetic acid | 1.50 | g | 1.5 | 7.848 | |
MgSO4 x 7 H2O | 3.00 | g | 3 | 12.172 | |
MnSO4 x H2O | 0.50 | g | 0.5 | 2.958 | |
NaCl | 1.00 | g | 1 | 17.112 | |
FeSO4 x 7 H2O | 0.10 | g | 0.1 | 0.36 | |
CoSO4 x 7 H2O | 0.18 | g | 0.18 | 1.161 | |
CaCl2 x 2 H2O | 0.10 | g | 0.1 | 0.68 | |
ZnSO4 x 7 H2O | 0.18 | g | 0.18 | 0.626 | |
CuSO4 x 5 H2O | 0.01 | g | 0.01 | 0.04 | |
AlK(SO4)2 x 12 H2O | 0.02 | g | 0.02 | 0.042 | |
H3BO3 | 0.01 | g | 0.01 | 0.162 | |
Na2MoO4 x 2 H2O | 0.01 | g | 0.01 | 0.041 | |
NiCl2 x 6 H2O | 0.03 | g | 0.03 | 0.231 | |
Na2SeO3 x 5 H2O | 0.30 | mg | 3.0e-4 | 0.001 | |
Na2WO4 x 2 H2O | 0.40 | mg | 4.0e-4 | 0.001 | |
Distilled water | 1000.00 | ml | - | - | |
1 First dissolve nitrilotriacetic acid and adjust pH to 6.5 with KOH, then add minerals. Adjust final to pH 7.0 with KOH. |
Compound | Amount | Unit | Conc. [g/L] | Conc. [mM] | |
---|---|---|---|---|---|
Isobutyric acid | 23 | ml | - | - | |
DL-2-Methylbutyric acid | 27 | ml | - | - | |
Valeric acid | 27 | ml | - | - | |
Isovaleric acid | 27 | ml | - | - | |
Distilled water | 896 | ml | - | - | |
1 Adjust pH to 7.5 with concentrated NaOH. |
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 | - | - |
Last modified: | 26.02.24 |
Source: | DSMZ |
Synonyms: | METHANOMICROBIUM MOBILE MEDIUM |
Taxonomic range: | Archaea |
Medium type: | Complex medium |
Final pH: | 6.5 |
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 .
All strains for this medium: | 1 |
Compound | Conc. [g/L] | Conc. [mM] |
---|---|---|
NaHCO3 | 1.998 | 23.784 |
Yeast extract | 0.999 | - |
Trypticase | 0.999 | - |
L-Cysteine HCl x H2O | 0.5 | 2.844 |
Na2S x 9 H2O | 0.5 | 2.08 |
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