ATCC medium: 1551 Methanomicrobium medium
Rumen fluid (clarified)................300.0 ml
K2HPO4 ...................................0.3 g
KH2PO4 ...................................0.3 g
(NH4)2SO4.................................0.3 g
NaCl.....................................0.6 g
MgSO4 . 7H2O .............................0.13 g
CaCl2 . 2H2O .............................8.0 mg
Wolfe's Mineral Solution (see below)....10.0 ml
Wolfe's Vitamin Solution (see below)....10.0 ml
FeSO4 . 7H2O .............................2.0 mg
NaHCO3 ...................................2.0 g
Yeast Extract (BD 212750)................1.0 g
Trypticase Peptone (BD 211921)...........1.0 g
Fatty Acid Mixture (see below)..........20.0 ml
Resazurin (0.1%).........................1.0 ml
L-Cysteine . HCl.........................0.5 g
Na2S . 9H2O ..............................0.5 g
Distilled water........................660.0 ml
Adjust final pH to 6.5. Tube under 80% N2, 20% CO2 in aluminum seal tubes.
Fatty Acid Mixture:
Valeric acid.......................0.7 ml
Isovaleric acid....................0.7 ml
alpha-Methylbutyric acid...........0.5 ml
Isobutyric acid....................0.5 ml
Distilled water....................1.0 L
Wolfe's Vitamin Solution:
Available from ATCC as a sterile ready-to-use liquid (Vitamin Supplement, catalog no. MD-VS).
Biotin.............................2.0 mg
Folic acid.........................2.0 mg
Pyridoxine hydrochloride..........10.0 mg
Thiamine . HCl.....................5.0 mg
Riboflavin.........................5.0 mg
Nicotinic acid.....................5.0 mg
Calcium D-(+)-pantothenate.........5.0 mg
Vitamin B12........................0.1 mg
p-Aminobenzoic acid................5.0 mg
Thioctic acid......................5.0 mg
Distilled water....................1.0 L
2 Wolfe's Mineral Solution:
Available from ATCC as a sterile ready-to-use liquid (Trace Mineral Supplement, catalog no. MD-TMS.)
Nitrilotriacetic acid..............1.5 g
MgSO4 . 7H2O .......................3.0 g
MnSO4 . H2O ........................0.5 g
NaCl...............................1.0 g
FeSO4 . 7H2O .......................0.1 g
CoCl2 . 6H2O .......................0.1 g
CaCl2 ..............................0.1 g
ZnSO4 . 7H2O .......................0.1 g
CuSO4 . 5H2O .......................0.01 g
AlK(SO4)2 . 12H2O...................0.01 g
H3BO3 ..............................0.01 g
Na2MoO4 . 2H2O......................0.01 g
Distilled water....................1.0 L
Add nitrilotriacetic acid to approximately 500 ml of water and adjust to pH 6.5 with KOH to dissolve the compound. Bring volume to 1.0 L with remaining water and add remaining compounds one at a time.