what is the best the best kind of media (agar or broth medium) to use for...

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Biology

what is the best the best kind of media (agar or broth medium)to use for identification of the following bacteria:
Staphylococcus aureus
Escherichia coli
Streptococcus pneumoniae
Examples of possible media choices may include: TSA, TSIA, MSA,MacConkey, Blood Agar, EMB, SIM, MR-VP, etc.
Also, provide reasoning behind each selection. Also list if eachof the media used are selective and/or differential. Whatobservable changes would you expect to see from the media after aproper incubation period with each bacterial species?

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4.5 Ratings (878 Votes)

For proper identification of the organism we use agar solid medium because we can find the colony morphology shown by the bacteria only on a solid surface According to the colony morphology and in case of selectivedifferential medium the colour change shown by te bacteria is very useful for identifying it Staphyococcus aureus MSA Mannitol Salt Agar is the best option for identification for this particular bacterium MSA is a selective medium which selectively permits growth of some bacteria and inhibits the growth of some See Answer

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