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DSMZ

DSMZ 386 . DESULFOLUTIVIBRIO MEDIUM

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Equipment needed: Autoclave Filter Gassing station Hungate tubes
Final gas composition: 80 % N2 20 % CO2 read more
Final pH: 7.1 - 7.4
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ml
Compound Amount Unit
Solution A 942 ml
Solution B 30 ml
Solution C 10 ml
Solution D 1 ml
Solution E 10 ml
Solution F 13 ml
1 Solution A is sparged 80% N2 and 20% CO2 gas mixture for 30 – 45 min to make it anoxic, then distributed under the same gas atmosphere into anoxic Hungate-type tubes or serum vials and autoclaved. Solution B is autoclaved separately under 80% N2 and 20% CO2 gas mixture. Solutions C and F are autoclaved under 100% N2 gas. Solutions D and E are prepared under 100% N2 gas atmosphere and sterilized by filtration. To complete the medium appropriate amounts of the solutions B to F are added to the sterile solution A in the sequence as indicated. Final pH of the medium should be at 7.1 - 7.4.
2 Note: When growth has started feed culture again with same amount of pyrosulfite. After a further two days repeat feeding once more.

Solution A #

942
Compound Amount Unit
KH2PO4 0.20 g
NH4Cl 0.25 g
NaCl 1.00 g
MgCl2 x 6 H2O 0.40 g
KCl 0.50 g
CaCl2 x 2 H2O 0.15 g
Trace element solution SL-10 1.00 ml
Selenite-tungstate solution 1.00 ml
Sodium resazurin
(0.1% w/v) 		0.50 ml
Distilled water 940.00 ml

Solution B #

30
Compound Amount Unit
Na2CO3 1.5 g
Distilled water 30.0 ml

Solution C #

10
Compound Amount Unit
Na-acetate x 3 H2O 0.3 g
Distilled water 10.0 ml

Solution D #

1
Compound Amount Unit
Seven vitamins solution 1 ml

Solution E #

10
Compound Amount Unit
Na2S2O5
(sodium pyrosulfite) 		0.95 g
Distilled water 10.00 ml
1 Adjust pH to 7.5-8.0 with NaOH.

Solution F #

13
Compound Amount Unit
Na2S x 9 H2O 0.4 g
Distilled water 13.0 ml

Trace element solution SL-10 #

1000
Compound Amount Unit
HCl
(25%) 		10.0 ml
FeCl2 x 4 H2O 1.5 g
ZnCl2 70.0 mg
MnCl2 x 4 H2O 100.0 mg
H3BO3 6.0 mg
CoCl2 x 6 H2O 190.0 mg
CuCl2 x 2 H2O 2.0 mg
NiCl2 x 6 H2O 24.0 mg
Na2MoO4 x 2 H2O 36.0 mg
Distilled water 990.0 ml
1 First dissolve FeCl2 in the HCl, then dilute in water, add and dissolve the other salts. Finally make up to 1000.00 ml.

Selenite-tungstate solution #

1000
Compound Amount Unit
NaOH 0.5 g
Na2SeO3 x 5 H2O 3.0 mg
Na2WO4 x 2 H2O 4.0 mg
Distilled water 1000.0 ml

Seven vitamins solution #

1000
Compound Amount Unit
Vitamin B12 100 mg
p-Aminobenzoic acid 80 mg
D-(+)-biotin 20 mg
Nicotinic acid 200 mg
Calcium pantothenate 100 mg
Pyridoxine hydrochloride 300 mg
Thiamine-HCl x 2 H2O 200 mg
Distilled water 1000 ml