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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:

... is not very specific, and telling me to speak with someone else isn't very helpful either... I think you can use a test, where semi-solid agar taken in test tube, which will a gradation of oxygen concentration. Surface have normal oxygen concentration and when we go downwards its concentration ...

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by sosippus
Wed Sep 24, 2014 7:44 pm
 
Forum: Microbiology
Topic: Oxygen requirements of eukaryotes
Replies: 3
Views: 339

Oxygen requirements of eukaryotes

I think you can use a test, where semi-solid agar taken in test tube, which will a gradation of oxygen concentration. Surface have normal oxygen concentration and when we go downwards its concentration gradualy decreases. At near bottom there is ...

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by josem
Wed Sep 24, 2014 5:28 pm
 
Forum: Microbiology
Topic: Oxygen requirements of eukaryotes
Replies: 3
Views: 339

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: 3795

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: 2426

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: 2166
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