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Baird-Parker agar is a type of agar used for the selective isolation of gram-positive Staphylococci species. [1] It contains lithium chloride and tellurite to inhibit the growth of alternative microbial flora, while the included pyruvate and glycine promote the growth of Staphylococci . [ 1 ]
On Baird-Parker medium, Staphylococcus species grow fermentatively, except for S. saprophyticus, which grows oxidatively. Staphylococcus species are resistant to bacitracin (0.04 U disc: resistance = < 10 mm zone of inhibition) and susceptible to furazolidone (100 μg disc: resistance = < 15 mm zone of inhibition). Further biochemical testing ...
Baird-Parker agar is for gram-positive staphylococci. Sabouraud agar is selective to certain fungi due to its low pH (5.6) and high glucose concentration (3–4%). DRBC (dichloran rose bengal chloramphenicol agar) is a selective medium for the enumeration of moulds and yeasts in foods.
On the Baird-Parker agar with egg yolk supplement, colonies appear small and black. Increasingly, techniques such as quantitative PCR are being employed for the rapid detection and identification of Staphylococcus strains.
Several years later Baird formed his own company, the Baird Marionettes, which performed initially at the Chicago World’s Fair of 1933. In 1950, Baird and Producer Yul Brynner created a show based on his character Snarky Parker called Life With Snarky Parker, which was a satire of American Westerns. [5]
Streak plates of several bacterial species on nutrient agar plates. Nutrient agar is a general-purpose solid medium supporting growth of a wide range of non-fastidious organisms.
Buffered charcoal yeast extract (BCYE) agar is a selective growth medium used to culture or grow certain types of bacteria, particularly the Gram-negative species Legionella pneumophila. [1]
Enterococcus colonies (black) growing on BEA. Bile salts are the selective ingredient, while esculin is the differential component. Enterococcus hydrolyze esculin to products that react with ferric citrate in the medium to produce insoluble iron salts, resulting in the blackening of the medium.