What is
Log Reduction?
|
‘Log’ stands for logarithm, a
mathematical term for a power to which a number can be raised. For example,
if using 10 as a given number, a Log 3 increase can be shown as 103
|
||||||||||||||||||||||||
|
A log reduction takes the power in the opposite
direction. Log reduction means a 10 fold (one decimal place) or 90% reduction
in the quantitative value of a microbial population.
In simple terms 1-Log Reduction would reduce the number
of bacteria 90%. For example, 100 bacteria would be reduced to 10, or 10
reduced to 1.
Log reduction
= log10 (N0 /N)
Where:
N0 =
colony forming units of the microorganisms before disinfection
N = colony
forming units of the microorganisms after disinfection.
|
||||||||||||||||||||||||
|
||||||||||||||||||||||||
|
|
||||||||||||||||||||||||
No comments:
Post a Comment