Pfizer Selective Enterococcus Agar Overlay Method for the Enumeration of Fecal Streptococci by Membrane Filtration
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چکیده
منابع مشابه
Pfizer selective enterococcus agar overlay method for the enumeration of fecal streptococci by membrane filtration.
The use of Pfizer selective enterococcus (PSE) agar with the membrane filter technique for the enumeration of fecal streptococci is limited due to the inability of the characteristic black precipitate, indicative of esculin hydrolysis, to diffuse from the medium through the membrane. A modification of the membrane filter technique that consisted of placing the membrane on PSE agar and overlayin...
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Pfizer selective enterococcus (PSE) and KF agars were compared for their recovery of fecal streptococci from sewage effluent on membrane filters. The results showed that PSE agar is highly selective for the enterococci. The tan color resulting from esculin hydrolysis, which was not always visible on the surfaces of the colonies, is not considered a necessary differential characteristic on PSE a...
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Gentamicin-thallous-carbonate medium for isolation of fecal streptococci from foods.
Gentamicin-thallous-carbonate (GTC) agar was formulated by Donnelly and Hartman (Appl. Environ. Microbiol. 35:576-581, 1978) to select for fecal streptococci in sewage and water samples. The present study was conducted to determine the usefulness of GTC agar for the enumeration of fecal streptococci in foods. Comparisons were made with KF streptococcal (KF), Pfizer selective enterococcus (PSE),...
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ژورنال
عنوان ژورنال: Applied Microbiology
سال: 1975
ISSN: 0003-6919
DOI: 10.1128/am.29.5.584-589.1975