Analizan la presencia de microtoxinas en los cereales de desayuno en España

Título: Co-occurrence of aflatoxins, ochratoxin A and zearalenone in breakfast cereals from spanish market

Resumen :
Forty-six breakfast cereal samples from the Spanish market have been analyzed for the occurrence of aflatoxins (AFB1, AFG1, AFB2 and AFG2), ochratoxin A (OTA) and zearalenone (ZEA). According to the results, 9% of the samples were contaminated with AFB1 although no sample exceeded the LOQ (0.2 mu g kg(-1)), and no sample presented detectable levels of the other aflatoxins (AFB2, AFG1 and AFG2). Zearalenone and OTA contaminated 48 and 39% of the samples, respectively, with mean values of the samples having quantification levels of 25.40 and 0.37 mu g kg(-1), respectively. The co-occurrence of OTA and ZEA was observed in 28% of the samples. Aflatoxin B1 appeared only in the corn-based breakfast cereals, whereas ZEA and OTA showed the highest contamination rates in the samples containing wheat and wheat and rice, respectively. No sample of high-fiber content was contaminated with AFB1, whereas OTA and ZEA occurred with higher incidence in high-fiber content samples. Moreover, the daily exposure to AFB1, OTA and ZEA is discussed. (C) 2011 Elsevier Ltd. All rights reserved.

Autores :
Ibanez-Vea, M (Ibanez-Vea, Maria)1; Martinez, R (Martinez, Rosa)1; Gonzalez-Penas, E (Gonzalez-Penas, Elena)1; Lizarraga, E (Lizarraga, Elena)1; de Cerain, AL (Lopez de Cerain, Adela)2

Direcciones :
1. Univ Navarra, CIFA, Fac Pharm, Dept Organ & Pharmaceut Chem, Navarra 31008, Spain
2. Univ Navarra, CIFA, Fac Pharm, Dept Nutr Food Sci Physiol & Toxicol, Navarra 31008, Spain