309. MOORELLA MEDIUM

NH₄Cl 1.0 g

Na₂SO₄ 2.0 g

Na₂S₂O₃ × 5 H₂O 1.0 g

MgSO₄ × 7 H₂O 1.0 g

CaCl₂ × 2 H₂O 0.1 g

KH₂PO₄ 0.5 g

Trace element solution SL-10 (see below) 1.0 ml

Selenite-tungstate solution (see below) 1.0 ml

Yeast extract 1.0 g

Na-resazurin solution (0.1% w/v) 0.5 ml

NaHCO₃ 2.0 g

Vitamin solution (see below) 10.0 ml

Na-DL-lactate 2.5 g

Na₂S × 9 H₂O 0.1 g

Distilled water 1000.0 ml

Trace element solution SL-10:

HCl (25%; 7.7 M) 10.0 ml

FeCl₂ × 4 H₂O 1.5 g

ZnCl₂ 70.0 mg

MnCl₂ × 4 H₂O 100.0 mg

H₃BO₃ 6.0 mg

CoCl₂ × 6 H₂O 190.0 mg

CuCl₂ × 2 H₂O 2.0 mg

NiCl₂ × 6 H₂O 24.0 mg

Na₂MoO₄ × 2 H₂O 36.0 mg

Distilled water 990.0 ml

Selenite-tungstate solution:

NaOH 0.5 g

Na₂SeO₃ × 5 H₂O 3 mg

Na₂WO₄ × 2 H₂O 4 mg

Distilled water 1000.0 ml

Vitamin solution:

Biotin 2.0 mg

Folic acid 2.0 mg

Pyridoxine-HCl 10.0 mg

Thiamine-HCl × 2 H₂O 5.0 mg

Riboflavin 5.0 mg

Nicotinic acid 5.0 mg

D-Ca-pantothenate 5.0 mg

Vitamin B₁₂ 0.1 mg

p-Aminobenzoic acid 5.0 mg

Lipoic acid 5.0 mg

Distilled water 1000.0 ml

Dissolve ingredients (except bicarbonate, vitamins, lactate and sulfide), sparge medium with 100% N₂ gas for 30–45 min to make it anoxic, then dispense under same gas atmosphere into anoxic Hungate-type tubes or serum vials and autoclave. After autoclaving complete the medium by adding vitamins (sterilized by filtration), lactate and sulfide from sterile anoxic stock solutions prepared under 100% N₂ gas and bicarbonate from a sterile anoxic stock solution prepared under 80% N₂ and 20% CO₂ gas atmosphere. Adjust pH of the complete medium to 7.0-7.2, if necessary.

Updated 30.06.2021