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SUCCINICLASTICUM MEDIUM
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Selected strain: Schwartzia succinivorans DSM 10502
This strain uses the standard medium without modifications.
Growth conditions: anaerobic
37 °C
Equipment needed:
Autoclave
Centrifuge
Gassing station
Hungate tubes
Final gas composition:
100 % CO2
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Final pH:
6.7 - 6.8
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ml
| Compound | Amount | Unit | |||
|---|---|---|---|---|---|
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Clarified rumen fluid | 400.00 | ml | ||
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K2HPO4 | 0.23 | g | ||
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KH2PO4 | 0.23 | g | ||
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NaCl | 0.45 | g | ||
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(NH4)2SO4 | 0.45 | g | ||
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CaCl2 x 2 H2O | 0.06 | g | ||
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MgSO4 x 7 H2O | 0.09 | g | ||
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Indigocarmine | 5.00 | mg | ||
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NaHCO3 | 6.40 | g | ||
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Disodium succinate | 5.00 | g | ||
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Yeast extract | 5.00 | g | ||
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L-Cysteine HCl x H2O | 0.30 | g | ||
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Na2S x 9 H2O | 0.30 | g | ||
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Distilled water | 600.00 | ml | ||
| 1 Dissolve ingredients (except bicarbonate, succinate, yeast extract, cysteine and sulfide), bring medium to the boil, then cool to room temperature under 100% CO2 gas atmosphere. Add the bicarbonate and equilibrate the medium with the CO2 gas to pH 6.8. Distribute under 100% CO2 gas atmosphere into anoxic Hungate-type tubes or serum vials and autoclave. Thereafter, add succinate, yeast extract, cysteine and sulfide from sterile anoxic stock solutions prepared under 100% N2 gas atmosphere. Adjust pH of complete medium to 6.7 - 6.8, if necessary. | |||||
| 2 Note: Supplementing the medium with 1.50 g/l agar stimulates growth of strains after resuscitation from ampoules. | |||||
Clarified rumen fluid #
1000
| 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. |