DSMZ 720 . DESULFITOBACTERIUM HAFNIENSE MEDIUM

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Equipment needed: Autoclave Filter Gassing station Hungate tubes

Final gas composition: 80 % N2 20 % CO2 read more

Final pH: 7.0 - 7.2

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ml
Compound Amount Unit
NH4Cl 1.00 g
NaCl 0.10 g
MgCl2 x 6 H2O 0.10 g
CaCl2 x 2 H2O 0.05 g
K2HPO4 x 3 H2O 0.40 g
Trace element solution SL-11 1.00 ml
Selenite-tungstate solution 1.00 ml
Yeast extract 1.00 g
Sodium resazurin
(0.1% w/v)
0.50 ml
NaHCO3 2.60 g
Na-pyruvate 2.50 g
Na2S2O3 x 5 H2O 1.25 g
Wolin's vitamin solution (10x) 1.00 ml
Na2S x 9 H2O 0.30 g
Distilled water 1000.00 ml
1 Dissolve ingredients (except bicarbonate, pyruvate, thiosulfate, vitamins and sulfide), then sparge medium with 80% N2 and 20% CO2 gas mixture for 30 - 45 min to make it anoxic. Add bicarbonate and adjust pH to 7.0 - 7.2, then dispense under 80% N2 and 20% CO2 gas atmosphere into anoxic Hungate-type tubes or serum vials and autoclave. Prior to use add pyruvate, thiosulfate, vitamins, and sulfide from sterile anoxic stock solutions prepared under 100% N2 gas. Stock solutions of pyruvate and vitamins are sterilized by filtration.

Trace element solution SL-11 #

1000
Compound Amount Unit
Na2-EDTA x 2 H2O 5.2 g
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 1000.0 ml
1 Dissolve EDTA in 800 ml distilled water, adjust pH to 7 using 2 N NaOH and add ferrous chloride. After ferrous chloride has dissolved add other compounds. Finally adjust pH to 6.0 and bring volume to 1000 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