Baird-Parker agar: Difference between revisions
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{{Short description|Selective culture medium}} |
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| ⚫ | '''Baird-Parker agar''' is a type of [[agar]] used for the selective isolation of |
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[[File:S. aureus colonies in Baird-Parker agar.jpg|thumb|[[Staphylococcus]] growth in Baird-Parker (BP) agar.]] |
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EY Tellurite Enrichment". Accessed [[May 16]], [[2008]].</ref> |
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| ⚫ | '''Baird-Parker agar''' is a type of [[agar]] used for the selective isolation of [[gram-positive]] ''[[Staphylococci]]'' species.<ref name="EMD">{{cite web|url=http://www.emdchemicals.com/analytics/Micro_Manual/TEDISdata/prods/1_05406_0500.html |title=Baird-Parker Agar Base |publisher=EMD Chemicals |accessdate=2008-05-16 |archiveurl=https://web.archive.org/web/20080501041929/http://www.emdchemicals.com/analytics/Micro_Manual/TEDISdata/prods/1_05406_0500.html |archivedate=2008-05-01 |url-status=live }}</ref> 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''.<ref name="EMD"/> ''Staphylococcus'' colonies show up black in colour with clear zones produced around them.<ref name="EMD"/> |
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== History == |
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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|coagulase-positive]] ''Staphylococci'' in 1962.<ref>{{Cite journal |last=Baird-Parker |first=A. C. |title=An Improved Diagnostic and Selective Medium for Isolating Coagulase Positive Staphylococci |date=1962 |url=https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2672.1962.tb01113.x |journal=Journal of Applied Bacteriology |language=en |volume=25 |issue=1 |pages=12–19 |doi=10.1111/j.1365-2672.1962.tb01113.x}}</ref> He developed this agar medium from the tellurite-glycine formulation of Zebovitz ''et al''<ref>{{Cite journal |last1=Zebovitz |first1=Eugene |last2=Evans |first2=James B. |last3=Niven |first3=C. F. |title=Tellurite-Glycine Agar: A Selective Plating Medium for the Quantitative Detection of Coagulase-Positive Staphylococci |date=1955 |url=http://dx.doi.org/10.1128/jb.70.6.686-690.1955 |journal=Journal of Bacteriology |volume=70 |issue=6 |pages=686–690 |doi=10.1128/jb.70.6.686-690.1955 |pmid=13271314 |pmc=386272 |issn=0021-9193}}</ref> 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.<ref>{{Cite journal |last=Baird-Parker |first=A. C.YR 1963 |title=A Classification of Micrococci and Staphylococci Based on Physiological and Biochemical Tests |journal=Microbiology |year=1963 |volume=30 |issue=3 |pages=409–427 |doi=10.1099/00221287-30-3-409 |pmid=13969076 |issn=1465-2080|doi-access=free }}</ref> It is now widely recommended by national and international bodies for the isolation of coagulase-positive ''staphylococci''.<ref>{{Cite journal |last1=CHOPIN |first1=A. |last2=MALCOLM |first2=S. |last3=JARVIS |first3=G. |last4=ASPERGER |first4=H. |last5=BECKERS |first5=H. J. |last6=BERTONA |first6=A. M. |last7=COMINAZZINI |first7=C. |last8=CARINI |first8=S. |last9=LODI |first9=R. |last10=HAHN |first10=G. |last11=HEESCHEN |first11=W. |date=1985-01-01 |title=ICMSF Methods Studies. XV. Comparison of Four Media and Methods for Enumerating Staphylococcus aureus in Powdered Milk |journal=Journal of Food Protection |volume=48 |issue=1 |pages=21–27 |doi=10.4315/0362-028X-48.1.21 |pmid=30934501 |issn=0362-028X|doi-access=free }}</ref> 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.<ref name=":0">{{Cite web |title=Dehydrated Culture Media: BAIRD-PARKER AGAR (ISO) BASE |url=http://www.oxoid.com/UK/blue/prod_detail/prod_detail.asp?pr=CM1127&c=UK&lang=EN |access-date=8 April 2022 |website=ThermoScientific}}</ref> |
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==References== |
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{{Growth media}} |
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{{DEFAULTSORT:Baird-Parker agar}} |
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[[Category:Microbiological media]] |
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Latest revision as of 04:20, 10 July 2024
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
[edit]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
[edit]- ^ 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.
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