DSMZ 1636 . TEPIDIBACILLUS MEDIUM

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Equipment needed: Autoclave Filter Gassing station Hungate tubes

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

Final pH: 7.4

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ml
Compound Amount Unit
NaCl 10.00 g
KH2PO4 0.33 g
MgCl2 x 6 H2O 0.33 g
KCl 0.33 g
NH4Cl 0.33 g
Modified Wolin's mineral solution 1.00 ml
Yeast extract 0.10 g
CaCl2 x 2 H2O 0.33 g
Na2CO3 1.50 g
D-Glucose 2.00 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 calcium chloride, bicarbonate, glucose, vitamins and sulfide), 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. After autoclaving add calcium chloride, glucose, vitamins and sulfide from sterile anoxic stock solutions prepared under 100% N2 gas and bicarbonate from a sterile stock solution prepared under 80% N2 and 20% CO2 gas mixture. The vitamin solution should be sterilized by filtration. Adjust pH of the complete medium to 7.4, if necessary.

Modified Wolin's mineral solution #

1000
Compound Amount Unit
Nitrilotriacetic acid 1.50 g
MgSO4 x 7 H2O 3.00 g
MnSO4 x H2O 0.50 g
NaCl 1.00 g
FeSO4 x 7 H2O 0.10 g
CoSO4 x 7 H2O 0.18 g
CaCl2 x 2 H2O 0.10 g
ZnSO4 x 7 H2O 0.18 g
CuSO4 x 5 H2O 0.01 g
AlK(SO4)2 x 12 H2O 0.02 g
H3BO3 0.01 g
Na2MoO4 x 2 H2O 0.01 g
NiCl2 x 6 H2O 0.03 g
Na2SeO3 x 5 H2O 0.30 mg
Na2WO4 x 2 H2O 0.40 mg
Distilled water 1000.00 ml
1 First dissolve nitrilotriacetic acid and adjust pH to 6.5 with KOH, then add minerals. Adjust final to pH 7.0 with KOH.