milk microbiology cfu/ml

[isha01]

will sum1 plzzzzzzzzzzzzz reply 2 my question!!!!!! 2day

[heathfield]

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).

[theprof]

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

[isha01]

thankyou i worked it out!

[theprof]

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?

[isha01]

ska?? no whos that? im new to this site, was recommended to it by a friend - why do you ask?

[theprof]

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.

[isha01]

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!