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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] Staphylococcus colonies show up black in colour with clear zones produced around them.^[1]

History

Baird-Parker Agar From Liofilchem first published an academic article about this agar medium for the purposes of improved diagnostics and isolating coagulase-positive Staphylococci in 1962.^[2] He developed this agar medium from the tellurite-glycine formulation of Zebovitz et al^[3] and improved its reliability in isolating coagulase-positive staphylococci from foods. Baird-Parker added egg yolk emulsion as a diagnostic agent and sodium pyruvate to protect damaged cells and aid their recovery.^[4] It is now widely recommended by national and international bodies for the isolation of coagulase-positive staphylococci.^[5] Baird-Parker agar is commonly used as a method for the enumeration of coagulase-positive staphylococci (Staphylococcus aureus and other species) in food and animal feedstuffs.^[6]

References

^ ^a ^b ^c "Baird-Parker Agar Base". EMD Chemicals. Archived from the original on 2008-05-01. Retrieved 2008-05-16.
^ Baird-Parker, A. C. (1962). "An Improved Diagnostic and Selective Medium for Isolating Coagulase Positive Staphylococci". Journal of Applied Bacteriology. 25 (1): 12–19. doi:10.1111/j.1365-2672.1962.tb01113.x.
^ Zebovitz, Eugene; Evans, James B.; Niven, C. F. (1955). "Tellurite-Glycine Agar: A Selective Plating Medium for the Quantitative Detection of Coagulase-Positive Staphylococci". Journal of Bacteriology. 70 (6): 686–690. doi:10.1128/jb.70.6.686-690.1955. ISSN 0021-9193. PMC 386272. PMID 13271314.
^ Baird-Parker, A. C.YR 1963 (1963). "A Classification of Micrococci and Staphylococci Based on Physiological and Biochemical Tests". Microbiology. 30 (3): 409–427. doi:10.1099/00221287-30-3-409. ISSN 1465-2080. PMID 13969076.{{cite journal}}: CS1 maint: numeric names: authors list (link)
^ CHOPIN, A.; MALCOLM, S.; JARVIS, G.; ASPERGER, H.; BECKERS, H. J.; BERTONA, A. M.; COMINAZZINI, C.; CARINI, S.; LODI, R.; HAHN, G.; HEESCHEN, W. (1985-01-01). "ICMSF Methods Studies. XV. Comparison of Four Media and Methods for Enumerating Staphylococcus aureus in Powdered Milk". Journal of Food Protection. 48 (1): 21–27. doi:10.4315/0362-028X-48.1.21. ISSN 0362-028X. PMID 30934501.
^ "Dehydrated Culture Media: BAIRD-PARKER AGAR (ISO) BASE". ThermoScientific. Retrieved 8 April 2022.

Growth media / agar plates

Selective media

Gram positive

Actinomycetota	Mycobacterium tuberculosis Löwenstein–Jensen medium Middlebrook 7H9 Broth Middlebrook 7H10 Agar Middlebrook 7H11 Agar Mycoplasma pneumoniae Eaton's agar
Bacillota	Corynebacterium diphtheriae Hoyle's agar Enterococcus Bile esculin agar Lactobacillus Lee's Agar MRS agar Lactococcus M17 agar Listeria Fraser broth PALCAM Staphylococcus Mannitol salt agar Baird-Parker agar Vogel–Johnson agar

Gram negative

Alphaproteobacteria	Brucella Brucella agar Farrell's medium
Betaproteobacteria	Neisseria Thayer–Martin agar New York City agar
Gammaproteobacteria	Aggregatibacter actinomycetemcomitans Tryptic soy-serum-bacitracin-vancomycin Bordetella Bordet–Gengou agar Enterobacteriaceae VRBD agar Haemophilus influenzae/Legionella pneumophila Buffered charcoal yeast extract agar Pseudomonas aeruginosa Cetrimide agar Salmonella XLT agar DCA agar Salmonella/Shigella XLD agar

Differential media

Fungal media

Nonselective media

Other/ungrouped media

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