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Scientific
Publications - Work Done by Microbiology Reader
R.J.W. Lambert, Advances in disinfection testing and modelling, Journal of Applied Microbiology, Volume 91, Issue 2, Page 351-363, Aug 2001 ABSTRACT AIMS: To develop a set of kinetic equations which more ably
describe the disinfection process. METHODS AND RESULTS: A group of functions,
the fat equations, based on the model used for the quantification of microbial
inhibition, was produced. These functions introduce a limit to the numbers of
micro-organisms capable of being disinfected. These new expressions were shown
to be more general forms of currently-used (e.g. log-linear) disinfection
models, and accommodate the lags and/or tails of non-linear log-survivor--time
plots. An advance in the experimental procedures used to obtain disinfection
data, using an optical density technique, was developed concomitantly.
CONCLUSION: The methods of analyses (experimental and modelling) allow the
researcher to examine, more ably, five-minute disinfection (or specific time
disinfection tests) as well as the more important disinfection rate analyses.
SIGNIFICANCE AND IMPACT OF THE STUDY: The fat equations are an improvement over
commonly-used rate models of disinfection, which are shown to be special cases
of these equations. This raises the question as to whether our current
understanding of the kinetic basis of disinfection requires revision.
(order Full Text from publisher)
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