9 replies to this topic

[lilii]

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

 

 20190201_144709-1.png   222.43KB   3 downloads

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

[Hank Major]

Their spec says:

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

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

[Charles.C]

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

 

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

 

 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 ?

[lilii]

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

[Charles.C]

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.

[EagleEye]

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.

Dear Charles, 

Could you share the photos here, please?

[Scampi]

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

[Charles.C]

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 !

[Scampi]

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

[Charles.C]

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

 

 Flying Pigs perhaps ?