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Main sol. 1101a

Internal Solution-ID: S2218

Equipment needed: Autoclave Hungate tubes Filter Gassing station
Compound Amount Unit Conc. [g/L] Conc. [mM]
NaCl 25.00 g 24.925 426.51
K2HPO4 0.50 g 0.499 2.862
Yeast extract 0.20 g 0.199 -
Na2SO4 3.00 g 2.991 21.058
NaHCO3 1.85 g 1.844 21.956
Na2CO3 1.20 g 1.196 11.288
MgCl2 x 6 H2O 0.10 g 0.1 0.49
Trace elements solution (Pfennig & Lippert,1966) 1.00 ml - -
Selenite-tungstate solution 1.00 ml - -
Na-L-lactate 2.20 g 2.193 -
Seven vitamins solution 1.00 ml - -
Na2S x 9 H2O 0.50 g 0.499 2.076
Distilled water 1000.00 ml - -
1 Dissolve ingredients except carbonates, magnesium chloride, trace elements, lactate, vitamins and sulfide, then sparge medium with 100% N2 gas for 30 - 45 min to make it anoxic. Then add and dissolve carbonates, adjust pH to 9.0, dispense under 100% N2 gas atmosphere into anoxic Hungate-type tubes or serum vials and autoclave. After sterilization add magnesium chloride, trace elements, lactate, vitamins and sulfide from sterile anoxic stock solution prepared under 100% N2 gas. The vitamin solution should be sterilized by filtration. Adjust pH of complete medium to 9.0 - 9.5, if necessary.
1101a DESULFONATRONUM ZHILINAE MEDIUM