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Identity Unknown Colonies on Baird Parker Agar ?

baird parker agar

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#1 lilii

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Posted 03 February 2019 - 12:06 PM

What are these bacterial colonies on Baird Parker agar plus rpf? They don't like Staphylococcus aureus.

 

Attached File  20190201_144709-1.png   222.43KB   3 downloads


Edited by Simon, 04 February 2019 - 06:07 PM.


#2 Hank Major

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Posted 04 February 2019 - 08:25 PM

Their spec says:

"Occasionally the medium may grow some Bacillus species, yeast and very rarely, Proteus."

http://www.scharlabm...4-PA0145_EN.pdf



#3 Charles.C

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Posted 05 February 2019 - 01:46 AM

What are these bacterial colonies on Baird Parker agar plus rpf? They don't like Staphylococcus aureus.

 

attachicon.gif 20190201_144709-1.png

 

Hi lili,

 

I'm afraid speculation is probably futile. The possibilities are Legion. See -

 

http://www.oxoid.com....asp?pr=CM0275

 

Attached File  S.aureus.PNG   151.14KB   0 downloads

 

Colour might help but the typical characteristic halo is IMEX often tricky to see except at certain angles.

 

Coagulase positive ?


Kind Regards,

 

Charles.C


#4 lilii

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Posted 05 February 2019 - 04:58 AM

Thanks for the answers, but it certainly is not Staphylococcus aureus.



#5 Charles.C

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Posted 05 February 2019 - 05:32 AM

Thanks for the answers, but it certainly is not Staphylococcus aureus.

 

Certainly based on the picture it does not look like typical S.aureus coagulase positive.

 

Which is usually the only purpose of using the Agar.

 

Then again, I believe curiosity found Penicillin. :smile:


Kind Regards,

 

Charles.C


#6 EagleEye

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Posted 05 February 2019 - 10:19 AM

Certainly based on the picture it does not look like typical S.aureus coagulase positive.

 

Which is usually the only purpose of using the Agar.

 

Then again, I believe curiosity found Penicillin. :smile:

Dear Charles, 

Could you share the photos here, please?



#7 Scampi

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Posted 05 February 2019 - 02:08 PM

this link may help to at least narrow it down

 

https://www.scienceb...ing-agar-plates

 

 

I think it looks like bacillus thuringiensis

https://www.google.c...iact=mrc&uact=8


Because we always have is never an appropriate response!


#8 Charles.C

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Posted 05 February 2019 - 02:10 PM

this link may help to at least narrow it down

 

https://www.scienceb...ing-agar-plates

 

 

I think it looks like bacillus thuringiensis

https://www.google.c...iact=mrc&uact=8

 

Hi Scampi,

 

Nostradamus has a Competitor ! :yay:


Kind Regards,

 

Charles.C


#9 Scampi

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Posted 05 February 2019 - 02:12 PM

Yeah, well I had to dip my toe in!!!!  Its the Lunar New Year, so why not prognosticate!!!


Because we always have is never an appropriate response!


#10 Charles.C

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Posted 05 February 2019 - 02:29 PM

Yeah, well I had to dip my toe in!!!!  Its the Lunar New Year, so why not prognosticate!!!

 

 Flying Pigs perhaps ?


Kind Regards,

 

Charles.C





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