Table 2 Summary of the exposure model: variables, equations, or distribution of the input parameters and data sources.

From: Optimization of low-temperature nitrogen plasma in reducing fungi and aflatoxin human exposure through maize

Process

Variable

Description

Distribution/ Equation

Data Source/reference

Distribution in Aflatoxin Exposure (ng/Kg Body Weight/day)

Cafla

Distribution of Aflatoxin Concentration (ng/g) in Food

trnorm(\(\:{\mu\:}_{conc},{\sigma\:}_{conc}\))

Where:

trnorm = truncated normal distribution with lower cutoff = 0

\(\:{\mu\:}_{conc}\)= mean aflatoxin concentration in maize,

\(\:{\sigma\:}_{conc}\)= standard deviation in aflatoxin

concentration in maize

This study

 

Bwt

Distribution of

weight body (Kg)

trnorm(\(\:{\mu\:}_{Bwt},{\sigma\:}_{Bwt}\))

Where:

trnorm = truncated normal distribution with lower cutoff = 0

\(\:{\mu\:}_{Bwt}\)= mean body weight,

\(\:{\sigma\:}_{Bwt}\)= standard deviation body weight

Where distribution lower cutoff = 0

31

 

Cons

Distribution of

daily maize intake (g)

discrete(\(\:{P}_{cons},{Q}_{cons\_i}\))

Where:

discrete = discrete distribution

\(\:{P}_{cons}\)= proportion of consumers,

\(\:{Q}_{cons\_i}\)= quantity consumed by each \(\:{P}_{cons}\)

in meal i where \(\:i\) is either breakfast,

lunch or dinner

\(\:{Q}_{cons\_i}\:\sim\:uniform\left(mi{n}_{consume{d}_{i}},ma{x}_{consume{d}_{i}}\right)\)

31

 

Ei

Aflatoxin Exposure (ng/Kg Body Weight (bw)/day)

\(\:\sum\:\left(\frac{{C}_{afla}\times\:Cons}{{B}_{wt}}\right)\)

Summing over contribution from consumption during breakfast, lunch and dinner

Calculated

Reduction after plasma treatment

\(\:{C}_{red\_i}\)

Concentration in of aflatoxin in maize after plasma treatment

Ci = Ci−1\(\:\times\:\) (1-di)

where \(\:{d}_{i}\) is the fraction of the

aflatoxin removed due to

combination \(\:i\) of plasma treatment.