Supplement with 0.1 ml vitamin K1 1% solution dilluted 1/500 in distilled water and 0.2 ml Na2CO3 10% solution.
PROCEDURE
Regenerate tubes on water at 100 ºC, cool fast then inoculate culture using a pipette and starting from the
bottom of the tube to the surface. Incubate at 37 ºC, up to 2 weeks.
RESULTS
Anaerobes produce turbidity in the medium, mainly in the lower part, aerobes grow close to the surface and
microaerophilics prefer middle part of the tube.
REFERENCES
- Handbook Culture Media Merck, 1982.
- Alexandru Rafila: Medii de cultura, medii de transport si conservare. In Dumitru Buiuc, Marian Negut:
Tratat de microbiologie clinica ed. III, 2009, 1045-1084.
COMPOSITION
VARIANT 1
Proteose peptone …………………….............………………….. 10.0 g
Meat infusion …………………………................………………..... 5.0 g
D(+) glucose …………………………...............……………...…… 5.0 g
K2HPO4 ………………....................………………………………… 2.0 g
Sodium thioglycollate ……………………................……………… 0.5 g
Methylene blue ……………………………..............…………... 0.002 g
Agar - agar ……………………………………...............…………. 0.5 g
Distilled water ad 1000 ml, pH 7.0 ± 0.1, Pour in tubes and autoclave.
Clear, colorless & semi-solid state. Store in the dark, at room temperature.
Do not use green-blue tubes if color do not disappear after boiling.
VARIANT 2 - for fastidious anaerobes
Casein pancreatic digest …………….............………………….. 17.0 g
Soy pancreatic digest …………….............…………….......…….. 3.0 g
NaCl ….................……………………................………………..... 2.5 g
Glucose ……………………........……...............……………...…... 6.0 g
Sodium sulfite ………....................………………………………… 0.1 g
Sodium thioglycollate ……………………................……………… 0.5 g
Methylene blue ….…………………………..............…………... 0.002 g
Agar ...........……………………………………...............…………. 0.7 g
L-cystine .................................................................................. 0.25 g
Hemin ..................................................................................... 0.005 g
Distilled water ad 1000 ml, pH 7.2, Pour in tubes. Do not boil, do not
autoclave.
DESCRIPTION
Medium for the cultivation of anerobic, microaerophilic & facultatively anaerobic germs. Thioglycollate ensures the
anaerobiosis. Increase in oxygen content is indicated by the methylene blue which changes color to green-blue.
Thioglycollate medium (Brewer modified)
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(c) Costin Stoica