Topic: Agar Preferable to Gelatin as a Solidifying Agent
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Why is agar preferable to gelatin as a solidifying agent in cultu...
agar which is an extract of red marine algae is preferred because only a few microbes can degrade the agar, it will remain as a solid during growth of bacteria. It will liquefies at 100 degrees Celsius and will stay as a liquid till cooled ... Read More »
Source: http://wiki.answers.com/Q/Why_is_agar_preffered_to_gelatin_as_sol...
Why is agar preferable to gelatin as a solidifying agent in bacte...
== Answer =="No living organism has yet been recorded as being able to metabolize (or eat/digest) agar, which is not true about gelatin. Gelatin used to be the main solidifying agent until agar was found to be better (agar is a solidifying ... Read More »
Source: http://wiki.answers.com/Q/When_is_gelatin_used_as_culture_media
What is agar prefereable to gelatin as a solidifying agent in cul...
because agar is carb based and gelatin is protein based. Carbohydrates provide a better growing medium for cultures, it's easier to digest and break down than protein Read More »
Source: http://answers.yahoo.com/question/index?qid=20070814175507AAQcrY4
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Answers to Other Common Questions
Must be for the vegetarians, as gelatin is ground up cows hooves
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Source: http://www.answerbag.com/q_view/1335333
Less agar is needed to set the medium (about half the quantity of gelatin that would be required) It is from a plant, gelatin is made from boiled animal remains (sorry all you jelly eaters who didn't know that !!!) Gelatin "melts" at a lowe...
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Source: http://answers.yahoo.com/question/index?qid=20101027164726AAGZHDr
Because agar will stay solid at higher temperatures than gelatin. That way, when you stick your plates in an incubator, or if a lab mate likes the lab on the warm side, the media won't start to liquefy. Background/History We can thank Walth...
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Source: http://answers.yahoo.com/question/index?qid=20090630011648AAhS8c3
I am not sure if it is generally preferred, but as a vegetarian, I avoid gelatin: "Vegetarians usually avoid gelatin and use other emulsifiers instead, such as agar, carrageenan, pectin, or konnyaku. There is no vegetable source for gelatin...
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Source: http://www.answerbag.com/q_view/588127
"Solidifying agents: These agents used only in the solid - reversible to liquid media. For example we use gelatin or Agar agar as solidifying agents. [...] Agar agar is the predominant solidifying agent, because: - Most bacterial strains ca...
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Source: http://www.answerbag.com/q_view/1745869
"Agar or agar agar is a gelatinous substance chiefly used as a culture medium for microbiological work. It is an unbranched polysaccharide obtained from the cell membranes of some species of red algae or seaweed." Source(s): http://en.wikip...
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Source: http://answers.yahoo.com/question/index?qid=20071211233855AAC6z4h
Agar is required in smaller quantity (2-3%, in contrast to 10-15% of gelatin), is solid at the incubating temperature (while gelatin is liquid at this temperature) and does not contribute to the nutritional property of the medium (gelatin i...
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Source: http://www.microrao.com/media.htm
