Table III.

The Optimization Model's Parameters

Variable	Explanation	Estimate, Formula, or Distribution
lim	Limit set by a compound feed company for AFB1 in maize intended to be used in dairy cow feed (µg/kg)	2,5
M	Mean aflatoxin concentration of replacing batch (µg/kg)	1
CPi	Control point i	$i\in \{1,2,3,4\}$
nj	Number of batches (silos, ship compartments or barges) checked at CPi
ns i	Number of samples collected and analyzed from the batch at CPi
ci	AFB1 concentration at CPi before monitoring (µg/kg)	c1 = 1, 4, or 10
prod	AFB1 production between CP2 and CP3 (µg/kg)	prod = 0 or 100
cmi	AFB1 concentration at CPi after monitoring (µg/kg)	$(c_i+prod)\times {\mathrm{PA}}_i+m\times (1-{\mathrm{PA}}_i)$
PAi	Probability to accept the batches at CPi	$P({\mu }_i\le \ln (\lim )|c_i)$
µi	Mean lognormal distribution of the test results	$\ln (c_i)-\frac{{\sigma }_i^2}{2}$ (Lyman et al., 2011)
${\sigma }_i^2$	Standard deviation lognormal distribution of the test results	$\ln (\frac{\mathrm{var}(c_i)}{c_i^2}+1)$ (Lyman et al., 2011)
var(ci)	Variance of a sampling plan at CPi, collecting ns samples and analyzing one aliquot per batch with LC‐MS/MS	$\mathrm{var}(c_i)=\frac{128.4}{n{s}_i}\times c_i^{0.98}+{(0.50\times c_i)}^2$
ri	Recall and replacement costs for one batch (in case of rejection) at CPi	r 1 = €160.000 r 2 = €1.800.000 r 3 = €1.900.000 r 4 = €380.000