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Agar

Definition

noun

A gelatinous material derived from algae, specifically used as a culture medium of bacteria and other cells for diagnostic or laboratory experiments purposes.


Supplement

Agar came from the cell walls of red algae, especially those in family Gelidiaceae and family Gracilariaceae. The gelatinous material is extracted by boiling and filtration. The agar is made up of agarose and agaropectin.


Word origin: From Malay agar-agar (jelly)

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Re: ID OF UNKNOWN?!?!

Lacking in the list of largely useless and wasted testing is the observation of hemolysis on sheep blood agar.

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by Cepacia
Fri Dec 27, 2013 11:33 am
 
Forum: Microbiology
Topic: ID OF UNKNOWN?!?!
Replies: 5
Views: 3293

Re: Streptococcus sanguis??

Don;t understand why you wasted so much media and time with irrelevant tests. Please determine if this isolate shows alpha hemolysis on blood agar.

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by Cepacia
Sat Dec 21, 2013 1:22 pm
 
Forum: Microbiology
Topic: Streptococcus sanguis??
Replies: 1
Views: 2069

Conflicting results of Gram-Negative unknown

I think the major issue here is that the Hektoen Enteric agar is not on the flow chart that was provided. We were also not taught anything about it until the day unknows were distributed. My teacher did confirm that my results for the HE agar were negative ...

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by Jrh21854
Sun Dec 01, 2013 8:25 pm
 
Forum: Microbiology
Topic: Conflicting results of Gram-Negative unknown
Replies: 0
Views: 1835

Re:

... "THIOGLYCOLLATE MEDIUM- Anaerobic" -Which anaerobe? (http://en.wikipedia.org/wiki/Thioglycollate_broth) "SEMI SOLID (Sloppy) Agar – Anaerobic" - This media is usually used to test motility. "ANTIBIOTIC SENSITIVITY- Resistant." - To what??? "HUGH AND LEIFSON’S ...

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by microbiologyhelp
Sun Dec 01, 2013 11:36 am
 
Forum: Microbiology
Topic: URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!
Replies: 6
Views: 5279

URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!

... "THIOGLYCOLLATE MEDIUM- Anaerobic" -Which anaerobe? (http://en.wikipedia.org/wiki/Thioglycollate_broth) "SEMI SOLID (Sloppy) Agar – Anaerobic" - This media is usually used to test motility. "ANTIBIOTIC SENSITIVITY- Resistant." - To what??? "HUGH AND LEIFSON’S ...

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by Cat
Fri Nov 29, 2013 5:17 pm
 
Forum: Microbiology
Topic: URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!
Replies: 6
Views: 5279
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