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Main sol. 873

Internal Solution-ID: S1803

Equipment needed: Autoclave Hungate tubes Filter Gassing station
Compound Amount Unit Conc. [g/L] Conc. [mM]
NH4Cl 0.33 g 0.329 6.157
KH2PO4 0.33 g 0.329 2.42
KCl 0.33 g 0.329 4.418
NaHCO3 0.80 g 0.798 9.504
Yeast extract
(OXOID)
0.25 g 0.25 -
Peptone
(BD Bacto)
0.25 g 0.25 -
Trace element solution SL-10 1.00 ml - -
Sodium resazurin
(0.1% w/v)
0.50 ml 5.0e-4 0.002
MgCl2 x 6 H2O 0.33 g 0.329 1.62
CaCl2 x 2 H2O 0.22 g 0.22 1.493
Na2CO3 1.50 g 1.497 14.124
D-Glucose 3.00 g 2.994 16.619
Wolin's vitamin solution (10x) 1.00 ml - -
Na2S x 9 H2O 0.50 g 0.499 2.078
Distilled water 1000.00 ml - -
1 Dissolve ingredients, except magnesium chloride, calcium chloride, carbonate, vitamins, glucose and sulfide, then sparge medium for 30 - 45 min with 80% N2 and 20% CO2 gas mixture to make it anoxic. Dispense medium under same gas atmosphere into anoxic Hungate-type tubes or serum vials and autoclave. After autoclaving, add magnesium chloride, calcium chloride, vitamins, glucose 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. Vitamins should be sterilized by filtration. Adjust pH of the complete medium to 7.0 - 7.3, if necessary.
873 THERMOANAEROVIBRIO MEDIUM