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Main sol. 343

Internal Solution-ID: S658

Equipment needed: Autoclave Hungate tubes Gassing station Filter
Compound Amount Unit Conc. [g/L] Conc. [mM]
Starch
(soluble)
5.0 g 4.965 -
KH2PO4 0.5 g 0.497 3.649
Modified Wolin's mineral solution 15.0 ml - -
Artificial sea water 250.0 ml - -
Yeast extract
(OXOID)
2.0 g 1.986 -
Sodium resazurin
(0.1% w/v)
0.5 ml 5.0e-4 0.002
Wolin's vitamin solution (10x) 1.0 ml - -
L-Cysteine HCl x H2O 0.5 g 0.497 2.827
Na2S x 9 H2O 0.5 g 0.497 2.067
Distilled water 740.0 ml - -
1 Dissolve ingredients (except vitamins, sulfide, and cysteine) and adjust pH to 6.5. Boil medium for 1 min, then cool to room temperature under 100% N2 gas atmosphere. Dispense under the same gas atmosphere into anoxic Hungate-type tubes or serum vials to 30% of volume and autoclave. Add vitamins, sulfide, and cysteine from sterile anoxic stock solutions prepared under 100% N2 gas. Sterilize vitamins by filtration. Adjust the pH of the complete medium to 6.5, if necessary.
343 THERMOTOGA NEAPOLITANA MEDIUM