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Evil
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juz wondering...is the agar for cultivating bacteria the same agar we buy from supermarkets n eat?
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Originally posted by Phobos
There are different kinds (recipes) of agar used for cultivating bacteria. I don't think you'll find "blood agar" (used for blood-borne bacteria, as you may suspect) on supermarket shelves!
Agar is a gelatinous substance derived from seaweed that is commonly used as a solidifying agent in microbiology. It provides a solid medium for bacteria to grow and can also be used to isolate and purify bacteria colonies.
No, the agar used in microbiology is specifically formulated for culturing bacteria and is not the same as the agar used in cooking. Cooking agar may contain additives or other ingredients that could interfere with bacterial growth.
No, different types of agar are used for different purposes in microbiology. For example, nutrient agar is used for general bacterial growth, while selective agar is used to isolate specific types of bacteria. It is important to use the appropriate agar for the desired purpose.
To prepare agar, it is first dissolved in boiling water and then sterilized to eliminate any potential contaminants. Once cooled, the agar is poured into petri dishes or test tubes and allowed to solidify before use.
No, agar cannot be reused for multiple cultures. After a culture has been grown on agar, it is contaminated and cannot be used again. Fresh agar must be prepared for each new culture.