DSMZ 1056 . DESULFOSALSIMONAS MEDIUM

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Equipment needed: Autoclave Filter Gassing station Hungate tubes

Final gas composition: 54 % N2 33 % H2 13 % CO2 read more

Final pH: 7.0 - 7.2

Select a strain (optional):

ml
Compound Amount Unit
NaCl 60.0 g
MgSO4 x 7 H2O 10.0 g
KCl 6.0 g
CaCl2 x 2 H2O 0.4 g
NH4Cl 1.0 g
KH2PO4 0.1 g
Yeast extract 0.5 g
Trace element solution SL-10 1.0 ml
Selenite-tungstate solution 1.0 ml
Sodium resazurin
(0.1% w/v)
0.5 ml
Na2CO3 1.5 g
Na-propionate 1.5 g
Wolin's vitamin solution (10x) 1.0 ml
Na2S x 9 H2O 0.3 g
Distilled water 1000.0 ml
1 Dissolve ingredients (except carbonate, propionate, vitamins and sulfide) and sparge medium with 80% N2 and 20% CO2 gas mixture for 30 - 45 min to make it anoxic. Dispense medium under same gas atmosphere into anoxic Hungate-type tubes or serum vials and autoclave. Add propionate, vitamins (sterilized by filtration) and sulfide from sterile anoxic stock solutions prepared under 100% N2 gas and carbonate from a sterile anoxic stock solution prepared under 80% N2 and 20% CO2 gas mixture. Adjust pH of the complete medium to 7.0 - 7.2, if necessary.
2 Prior to use add sterile 100% H2 gas to 0.5 bar overpressure.
3 Note: Addition of 10 - 20 mg sodium dithionite per liter (e.g. from 5% (w/v) solution, freshly prepared under N2 and filter-sterilized) can be used to completely reduce the medium and may stimulate growth at the beginning.

Trace element solution SL-10 #

1000
Compound Amount Unit
HCl
(25%)
10.0 ml
FeCl2 x 4 H2O 1.5 g
ZnCl2 70.0 mg
MnCl2 x 4 H2O 100.0 mg
H3BO3 6.0 mg
CoCl2 x 6 H2O 190.0 mg
CuCl2 x 2 H2O 2.0 mg
NiCl2 x 6 H2O 24.0 mg
Na2MoO4 x 2 H2O 36.0 mg
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.

Selenite-tungstate solution #

1000
Compound Amount Unit
NaOH 0.5 g
Na2SeO3 x 5 H2O 3.0 mg
Na2WO4 x 2 H2O 4.0 mg
Distilled water 1000.0 ml