DSMZ 63c . DESULFOVIBRIO MEDIUM (CHOLINE)

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Equipment needed: Autoclave Gassing station Hungate tubes

Final gas composition: 100 % N2 read more

Final pH: 6.8 - 7.0

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ml
Compound Amount Unit
Solution A 980 ml
Solution B 10 ml
Solution C 10 ml
1 Dissolve ingredients of solution A, bring to the boil, then cool to room temperature while sparging with 100% N2 gas. Add solutions B and C, adjust pH to 7.8 with NaOH, and distribute under 100% N2 gas in anoxic Hungate-type tubes. During distribution continuously swirl the medium to keep the grey precipitate suspended. Autoclave 15 min at 121°C. Check medium pH after autoclaving and adjust to 6.8 - 7.0, if necessary.

Solution A #

980
Compound Amount Unit
K2HPO4 0.5 g
NH4Cl 1.0 g
Na2SO4 1.0 g
CaCl2 x 2 H2O 0.1 g
MgSO4 x 7 H2O 2.0 g
Choline chloride
(SIGMA)
5.0 g
Yeast extract 1.0 g
Sodium resazurin
(0.1% w/v)
0.5 ml
Distilled water 980.0 ml

Solution B #

10
Compound Amount Unit
FeSO4 x 7 H2O 0.5 g
Distilled water 10.0 ml

Solution C #

10
Compound Amount Unit
Na-thioglycolate 0.1 g
Ascorbic acid 0.1 g
Distilled water 10.0 ml