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Main sol. J784

Internal Solution-ID: S4733

Equipment needed: Autoclave Anaerobic workbench Hungate tubes Filter
Compound Amount Unit Conc. [g/L] Conc. [mM]
(NH4)2SO4 0.450 g 0.446 3.375
KH2PO4 0.050 g 0.05 0.364
MgSO4 x 7 H2O 0.500 g 0.496 2.011
KCl 0.050 g 0.05 0.665
Yeast extract 0.500 g 0.496 -
Ca(NO3)2 x 4 H2O 0.014 g 0.014 0.059
Na2SO4 3.000 g 2.973 20.932
Trace element solution 1.000 ml - -
L-Cysteine HCl x H2O 0.500 g 0.496 -
Resazurin 1.000 mg 9.9e-4 0.004
Distilled water 900.000 ml - -
1 Mix components thoroughly, distribute the medium into culture vessels (e.g., 4.5 ml of the medium in the Hungate tubes) under a N2-CO2 (4:1, v/v) gas mixture, seal with butyl rubber stoppers and autoclave. After cooling, add the following solutions (per 900 ml medium) from anaerobic stocks (autoclaved or *filter-sterilized):
Na2HPO4
(5%)
20.000 ml - -
KH2PO4
(25%)
40.000 ml - -
Fructose
(1 M)
20.000 ml - -
Trace vitamins (see Medium No. 197)
(*)
20.000 ml - -
Na2S x 9 H2O
(5%)
8.000 ml - -
2 Check final pH of the medium to be around 5.8.
J784 DESULFOSPOROSINUS ACIDOPHILUS MEDIUM