DSMZ 1232 . THERMOTOGA TF(D) MEDIUM

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Equipment needed: Autoclave Filter Gassing station Hungate tubes

Final gas composition: 100 % N2 read more

Final pH: 6.8

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ml
Compound Amount Unit
NH4Cl 0.50 g
MgSO4 x 7 H2O 1.90 g
MgCl2 x 6 H2O 1.40 g
K2HPO4 1.60 g
Na2HPO4 x 2 H2O 1.00 g
NaCl 26.00 g
Modified Wolin's mineral solution 10.00 ml
Yeast extract
(OXOID)
2.00 g
Trypticase peptone
(BD BBL)
2.00 g
Sodium resazurin
(0.1% w/v)
0.50 ml
Starch
(soluble)
5.00 g
CaCl2 x 2 H2O 0.56 g
Wolin's vitamin solution (10x) 1.00 ml
L-Cysteine HCl x H2O 0.30 g
Na2S x 9 H2O 0.30 g
Distilled water 1000.00 ml
1 Dissolve ingredients (except starch, calcium chloride, vitamins and reducing agents) and adjust pH to 6.5 - 6.8. Sparge medium with 100% N2 gas for 30 - 45 min to make it anoxic. Dispense medium under same gas atmosphere into anoxic Hungate-type tubes or serum vials (to 30% of volume) and autoclave. Add starch, calcium chloride, vitamins (sterilized by filtration), sulfide and cysteine from sterile anoxic stock solutions prepared under 100 N2 gas. Adjust pH of complete medium to 6.8, 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.