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milk microbiology cfu/ml

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isha01 | 18:15 Wed 05th Nov 2008 | Science
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will sum1 plzzzzzzzzzzzzz reply 2 my question!!!!!! 2day
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The CFU is a number found by dividing the bacteria count by the number of millilitres (or grams) in the sample. Microscopic examination usually provides a count of both live and dead bacteria, whereas the CFU has to be based on counting only the live cells, (i.e. those capable of division).
Here's the formula:

CFU on plate x dilution factor x aliquot factor = CFU/ mL milk

You should be able to calculate the three using the above formula. Note that the result is in CFU/mL
Question Author
thankyou i worked it out!
No problem. I only wish I could have answered earlier, but I've spent a few days advising on a project at a government laboratory and I've not had much free time to get on AB.

Tell me, you're not related to SKA by any chance?
Question Author
ska?? no whos that? im new to this site, was recommended to it by a friend - why do you ask?
Because of the similarity of your question to the stuff contained in these qurstions:

http://www.theanswerbank.co.uk/Science/Questio n650260.html

http://www.theanswerbank.co.uk/Science/Questio n650958.html

Is your friend taking the same course as you? If so, your friend may be SKA.

Question Author
my expt is just on pasteurised milk, not on the comparison of the two types. Im doing a mini research project to detect the quality of milk and if pasteurisation has been performed correctly. its strange though, ska's expt is very similar!

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