DSMZ 935 . DEFERRIBACTER MEDIUM

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Equipment needed: Autoclave Filter Gassing station Hungate tubes

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

Final pH: 6.5 - 6.7

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Main sol. 935 #

ml
Compound Amount Unit
NH4Cl 1.00 g
K2HPO4 0.08 g
MgCl2 x 6 H2O 4.50 g
CaCl2 x 2 H2O 0.38 g
NaCl 30.00 g
KNO3 0.50 g
Trace element solution SL-10 1.00 ml
Selenite-tungstate solution 1.00 ml
Yeast extract 2.00 g
Na2CO3 1.50 g
Na-pyruvate 0.50 g
Wolin's vitamin solution (10x) 1.00 ml
Distilled water 1000.00 ml
1 Dissolve ingredients (except carbonate, pyruvate and vitamins), then 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 pyruvate and vitamins from anoxic stock solutions prepared under 100% N2 gas and carbonate from a sterile anoxic stock solution prepared under 80% N2 and 20% CO2 gas atmosphere. The pyruvate and vitamins solutions are sterilized by filtration. The pH of the complete medium should be 6.5 - 6.7.

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