. 2019 Oct 15;6:1135–1142. doi: 10.1016/j.toxrep.2019.10.008

Table 3.

Overview of the AFB1 occurrence data used in this Risk Assessment.

Sample	N	LOD ng/g	LOQ ng/g	Samples > LOD (%)	Concentration (ng/g)		Reference
Sample	N	LOD ng/g	LOQ ng/g	Samples > LOD (%)	LB^(a)	UB^(b)	Reference
nixtamalized maize dough and flour	88	1.0	3.0	4 (5%)	0.2 ± 1	1.2 ± 1	Present study
nixtamalized maize tortilla	396	0.5	1.4	44 (11%)^(c)	1.2 ± 9	1.7 ± 9	Castillo-Urueta et al. [21]

LB: Lower Bound; UB: Upper bound.

^(a)

Samples below LOD set to zero in LB.

^(b)

Samples below LOD set to the numerical LOD value.

^(c)

The report from Castillo-Urueta et al. [21] indicates 39 positive samples with AFB1 values above LOQ, and 5 samples between the LOD and LOQ.