Aflatoxins in mesir paste

Figures & data

Table 1. Method performance for aflatoxins (AFs) determination in mesir paste.

Tabla 1. Método de desarrollo de determinación de aflatoxinas (AFs) en la pasta mesir.

Analyte	LOD (µg kg^−1)	LOQ (µg kg^−1)	Linearity	R^2		Range (µg kg^−1)	% RSD (instrumental repeatability)	% RSD (intermediate precision)
AFG2	0.05	0.15	y = 98.0015x+0.0033	0.998	0.058–5.184		0.78	2.22
AFG1	0.03	0.09	y = 22.7301x+0.0178	0.990	0.192–17.28		0.95	2.52
AFB2	0.05	0.15	y = 88.4237x+0.0118	0.994	0.058–5.184		1.05	2.67
AFB1	0.03	0.09	y = 44.6565x+0.0334	0.991	0.192–17.28		1.24	3.06

Table 2. Occurrence and mean contamination of aflatoxins in mesir paste (n = 42).

Tabla 2. Incidencia y promedio de contaminación de las aflatoxinas en la pasta mesir (n = 42).

Parameter	AFG2	AFG1	AFB2	AFB1	AFsTotal*
Positive samples** n (%)	12 (29)	30 (71)	–	22 (52)	32 (76)
Samples above 10 µg kg^−1 n (%)	–	–	–	–	4 (9.5)
Range (µg kg^−1)	LOD-0.42	LOD-10.11	˂LOD	LOD-0.11	LOD-10.20
Mean ± SD (µg kg^−1)	0.24 ± 0.17	5.74 ± 2.67	–	0.07 ± 0.02	5.52 ± 3.01

*Sum of AFG₂, AFG₁, AFB₂ and AFB₁.

**AFs’ level ˃ LOD.

*Suma de AFG₂, AFG₁, AFB₂ y AFB₁

** Nivel de AFs˃ LOD