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DSMZ

DSMZ 284 . KOSMOTOGA MEDIUM

Official DSMZ medium: This medium was manually curated by experts from the DSMZ.

Culture medium recipe

Vol.
×

Main sol. 284 #

ml
Equipment needed: Filter Hungate tubes Autoclave Gassing station
Compound Amount Unit Conc. [g/L] Conc. [mM]
K2HPO4 0.14 g 0.138 0.794
CaCl2 x 2 H2O 0.14 g 0.138 0.941
NH4Cl 0.25 g 0.247 4.618
MgSO4 x 7 H2O 3.40 g 3.36 13.631
MgCl2 x 6 H2O 4.10 g 4.051 19.928
KCl 0.33 g 0.326 4.374
NiCl2 x 6 H2O
(0.1% w/v) 		0.50 ml 4.9e-4 0.004
NaCl 30.00 g 29.644 507.26
Fe(NH4)2(SO4)2 x 6 H2O 0.01 g 0.01 -
Modified Wolin's mineral solution 10.00 ml - -
Sodium resazurin
(0.1% w/v) 		0.50 ml 4.9e-4 0.002
Na2CO3 1.50 g 1.482 13.985
Yeast extract 1.00 g 0.988 -
Wolin's vitamin solution (10x) 1.00 ml - -
L-Cysteine HCl x H2O 0.50 g 0.494 2.813
Na2S x 9 H2O 0.50 g 0.494 2.057
Distilled water 1000.00 ml - -
1 Dissolve ingredients except carbonate, yeast extract, vitamins, cysteine and sulfide. Sparge medium with 80% N2 and 20% CO2 gas mixture for 30 - 45 min to make it anoxic. Dispense medium under same gas atmosphere into anoxic Hungate-type tubes to 30% of their volume and autoclave. Add vitamins (sterilized by filtration), yeast extract, cysteine 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. Prior to use check pH of completed medium and adjust to 7.0 - 7.2, if necessary.
2 After inoculation add sterile 80% N2 and 20% CO2 gas mixture to 1 bar overpressure.

Modified Wolin's mineral solution #

1000
Solution occurs in 166 other media (first defined in Medium 141).
Compound Amount Unit Conc. [g/L] Conc. [mM]
Nitrilotriacetic acid 1.50 g 1.5 7.848
MgSO4 x 7 H2O 3.00 g 3 12.172
MnSO4 x H2O 0.50 g 0.5 2.958
NaCl 1.00 g 1 17.112
FeSO4 x 7 H2O 0.10 g 0.1 0.36
CoSO4 x 7 H2O 0.18 g 0.18 1.161
CaCl2 x 2 H2O 0.10 g 0.1 0.68
ZnSO4 x 7 H2O 0.18 g 0.18 0.626
CuSO4 x 5 H2O 0.01 g 0.01 0.04
AlK(SO4)2 x 12 H2O 0.02 g 0.02 0.042
H3BO3 0.01 g 0.01 0.162
Na2MoO4 x 2 H2O 0.01 g 0.01 0.041
NiCl2 x 6 H2O 0.03 g 0.03 0.231
Na2SeO3 x 5 H2O 0.30 mg 3.0e-4 0.001
Na2WO4 x 2 H2O 0.40 mg 4.0e-4 0.001
Distilled water 1000.00 ml - -
1 First dissolve nitrilotriacetic acid and adjust pH to 6.5 with KOH, then add minerals. Adjust final to pH 7.0 with KOH.

Wolin's vitamin solution (10x) #

1000
Solution occurs in 305 other media (first defined in Medium 120).
Compound Amount Unit Conc. [g/L] Conc. [mM]
Biotin 20 mg 0.02 0.082
Folic acid 20 mg 0.02 0.045
Pyridoxine hydrochloride 100 mg 0.1 0.486
Thiamine HCl 50 mg 0.05 0.148
Riboflavin 50 mg 0.05 0.133
Nicotinic acid 50 mg 0.05 0.406
Calcium D-(+)-pantothenate 50 mg 0.05 0.21
Vitamin B12 1 mg 1.0e-3 7.4e-4
p-Aminobenzoic acid 50 mg 0.05 0.365
(DL)-alpha-Lipoic acid 50 mg 0.05 0.242
Distilled water 1000 ml - -

Metadata

Last modified: 27.10.22
Source: DSMZ
Taxonomic range:  Bacteria
Medium type: Complex medium
Final pH: 7.0 - 7.2
Equipment needed: Autoclave, Filter, Gassing station, Hungate tubes
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Gas composition

  • 80 % N2
  • 20 % CO2

Detailed instructions for the cultivation of anaerobes including important warnings can be found in the cultivation instructions .

Associated strains

All strains for this medium: 2

Molecular composition

Compound Conc. [g/L] Conc. [mM]
MgCl2 x 6 H2O 4.051 19.928
Na2CO3 1.482 13.985
Yeast extract 0.988 -
L-Cysteine HCl x H2O 0.494 2.813
Na2S x 9 H2O 0.494 2.057
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Cultivation metadata from 2 strains BacDive

phyla 2 2 strains
oxygen anaerobe 1 strain
temperature mesophilic 1 strain
temperature thermophilic 1 strain