Dictionary » A » Agar

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)

Related term(s):


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


How would I do this experiment? [Advanced]

... you cannot perform the test at all), it would be better to perform dilution of your samples and spread aliquots of such on plates with growth agar (for E.coli simple LB, for Kefir, no idea). Let them growth (E.coli for 1 day at 37°C) and count number of colonies (pick plates with 10-300 colonies, ...

See entire post
by JackBean
Fri Dec 19, 2014 2:46 pm
 
Forum: Cell Biology
Topic: How would I do this experiment? [Advanced]
Replies: 2
Views: 1059

Beginner Microbiologist, looking for a place to start.

... recently purchased a lab microscope, and a ton of lab supplies. I have done all the basics- looked at pond water, plants, I have grown bacteria in Agar plates. I am at a point where I want to start doing experiments or research that contribute to science in some way. Does anyone have any ideas? ...

See entire post
by fstevens
Sat Dec 13, 2014 3:30 pm
 
Forum: General Discussion
Topic: Beginner Microbiologist, looking for a place to start.
Replies: 1
Views: 1138

Starch Hydrolysis

Normal RECIPE for STRACH Hydrolysis: Starch agar composition (g/liter) Beef extract 3 g Soluble starch 10 g Agar 12 g Distilled water 1 liter But should we can use Peptone instead of Beef extract ?

See entire post
by Helics
Sun Nov 30, 2014 10:00 am
 
Forum: Microbiology
Topic: Starch Hydrolysis
Replies: 0
Views: 565

Swarming Assay

Hi, I have a question considering a swarming assay on E.coli... I did a soft agar (0.3%), in LB, and placed a drop of bacteria in the middle of a plate. But after 24h, they just grew in a small radius, like in the photo: http://i.imgur.com/gwYGLZE.png ...

See entire post
by SpellForce
Wed Oct 29, 2014 8:21 pm
 
Forum: Microbiology
Topic: Swarming Assay
Replies: 0
Views: 487

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 ...

See entire post
by sosippus
Wed Sep 24, 2014 7:44 pm
 
Forum: Microbiology
Topic: Oxygen requirements of eukaryotes
Replies: 7
Views: 4545
View all matching forum results

This page was last modified 09:50, 16 December 2010. This page has been accessed 43,915 times. 
What links here | Related changes | Permanent link