Fitting a lognormal distribution to enumeration and absence/presence data

N Commeau, E Parent, ML Delignette-Muller… - International journal of …, 2012 - Elsevier
To fit a lognormal distribution to a complex set of microbial data, including detection data (eg
presence or absence in 25g) and enumeration data (eg 30cfu/g), we compared two models …

Fitting a distribution to microbial counts: making sense of zeroes

ASR Duarte, A Stockmarr, MJ Nauta - International journal of food …, 2015 - Elsevier
The accurate estimation of true prevalence and concentration of microorganisms in foods is
an important element of quantitative microbiological risk assessment (QMRA). This …

Estimating probability distributions of bacterial concentrations in food based on data generated using the most probable number (MPN) method for use in risk …

R Pouillot, K Hoelzer, Y Chen, S Dennis - Food Control, 2013 - Elsevier
Estimating probability distributions that describe bacterial concentrations in food products is
a key element of quantitative microbial risk assessments. Standard bacteriological protocols …

Methods for fitting a parametric probability distribution to most probable number data

MS Williams, ED Ebel - International Journal of Food Microbiology, 2012 - Elsevier
Every year hundreds of thousands, if not millions, of samples are collected and analyzed to
assess microbial contamination in food and water. The concentration of pathogenic …

Tail or artefact? Illustration of the impact that uncertainty of the serial dilution and cell enumeration methods has on microbial inactivation

A Garre, JA Egea, A Esnoz, A Palop… - Food Research …, 2019 - Elsevier
The estimation of the concentration of microorganisms in a sample is crucial for food
microbiology. For instance, it is essential for prevalence studies, challenge tests (growth …

Modelling homogeneous and heterogeneous microbial contaminations in a powdered food product

I Jongenburger, MW Reij, EPJ Boer… - International Journal of …, 2012 - Elsevier
The actual physical distribution of microorganisms within a batch of food influences
quantification of microorganisms in the batch, resulting from sampling and enumeration by …

Impact of microbial distributions on food safety II. Quantifying impacts on public health and sampling

I Jongenburger, J Bassett, T Jackson, LGM Gorris… - Food Control, 2012 - Elsevier
The distributions of microorganisms in foods impact the likelihood that a foodstuff will cause
illness and therefore also impact the consequential public health burden. As part of food …

[HTML][HTML] The Most Probable Curve method-A robust approach to estimate kinetic models from low plate count data resulting in reduced uncertainty

A Garre, MH Zwietering, MAJS van Boekel - International Journal of Food …, 2022 - Elsevier
A novel method is proposed for fitting microbial inactivation models to data on liquid media:
the Most Probable Curve (MPC) method. It is a multilevel model that makes a separation …

Estimating the correlation between concentrations of two species of bacteria with censored microbial testing data

MS Williams, ED Ebel - International journal of food microbiology, 2014 - Elsevier
Indicator organisms, such as generic Escherichia coli (GEC) and coliforms, can be used to
measure changes in microbial contamination during the production of food products. Large …

Impact of microbial count distributions on human health risk estimates

ASR Duarte, MJ Nauta - International Journal of Food Microbiology, 2015 - Elsevier
Quantitative microbiological risk assessment (QMRA) is influenced by the choice of the
probability distribution used to describe pathogen concentrations, as this may eventually …