Aflatoxins Contamination in Maize Products from Rural Communities in San Luis Potosi, Mexico

Site	n	Median	Max	>LOD%	>LOQ%	% > Mx	% > EU
Tocoy	123	0.172	287.230	81	61	9	14
P1	18	0.051	1.391	50	20	0	0
P2	31	0.051	9.567	53	29	0	3
P3	28	0.069	287.230	61	39	13	19
P4	36	1.707	255.545	92	89	18	26
E. Bocas	48	0.008	19.019	54	27	6	8
P1	27	0.051	19.019	48	23	6	10
P2	9	0.051	0.433	58	17	0	0
P3	6	0.293	15.173	80	80	20	20

[i] P1 = February; P2 = June; P3 = September; P4 = December. >LOD = Above Limit of Detection; >LOQ = Above Limit of Quantification; Mx = Mexican maximum level allowed for total AFs: 12 µg/kg (NOM-187-SSA1/SCFI-2002). EU = European Union maximum level allowed for total AFs: 5 µg/kg AFB₁ [21].

Table 3

Descriptive statistics of AFB₂ concentration by site, in µg/kg.

Site	n	Median	Max	>LOD%	>LOQ%
Tocoy	123	0.004	30.700	29	28
P1	9	0.004	0.122	5	5
P2	19	0.004	0.536	17.6	18
P3	20	0.004	16.911	19.3	19
P4	36	0.149	30.700	60	58
E. Bocas	48	0.503	0.927	10	10
P1	11	0.503	0.927	13	13
P2	5	0.004	0.004	0	0
P3	5	0.004	1.068	20	20

[i] P1 = February; P2 = June; P3 = September; P4 = December. >LOD = Above Limit of Detection; >LOQ = Above Limit of Quantification.

Median values of AFB₁ concentrations in samples from Tocoy, reported in µg/kg, obtained in February, June, September and December of 2015.* Statistical difference in December (p < 0.0005).

AFB₂ concentration in samples from Tocoy, reported in µg/kg, obtained in February, June, September and December of 2015. No statistical difference in sampling groups (p = 0.01).

Average monthly temperature in Tocoy and Estacion Bocas, San Luis Potosi. Conagua, 2015.

Table 4

Aflatoxins detected in maize, Latin America.

Country	Sample	AF’s concentration
Mexico (1995) [24]	Maize	73 µg/kg^a
Mexico (2011) [26]	Maize tortillas	0.003–0.385 µg/kg
Guatemala (1988) [33]	Maize cake	51 µg/kg^a
Maize	<4 µg/kg^a
Cuba [34]	Maize	109–5 µg/kg
Costa Rica [35]	Maize	50 µg/kg^a

[i] ^aMean value.

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DOI: https://doi.org/10.29024/aogh.918 | Journal eISSN: 2214-9996

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Language: English

Published on: Jul 27, 2018

Published by: Levy Library Press

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© 2018 Beatriz A. Zuki-Orozco, Lilia E. Batres-Esquivel, María D. Ortiz-Pérez, Bertha I. Juárez-Flores, Fernando Díaz-Barriga, published by Levy Library Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 84 (2018): Issue 2

Aflatoxins Contamination in Maize Products from Rural Communities in San Luis Potosi, Mexico

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