title: Co-occurrence of aflatoxins B1, B2, G1, G2, zearalenone and fumonisin B1 in Brazilian corn.
abstract: Two hundred and fourteen unprocessed corn samples (1997-98 harvest), collected at wholesale markets in different regions in Brazil, were surveyed for the occurrence of mycotoxins. The samples were analysed for aflatoxins B1, B2, G1, G2, zearalenone and fumonisin B1 using in-house validated methods. The occurrence of aflatoxin B1, zearalenone and fumonisin B1 was found in 38.3, 30.4 and 99.1% of the samples, respectively. Aflatoxin B1, zearalenone and fumonisin B1 contamination levels varied from 0.2 to 129, 36.8 to 719, and 200 to 6100 microg/kg, respectively. The co-occurrence of the two carcinogenic mycotoxins aflatoxin B1 and fumonisin B1 was observed in 100% of the aflatoxin-contaminated samples (82 samples). Co-occurrences of aflatoxin B1: zearalenone: fumonisin B1 and aflatoxin B1: aflatoxin B2: fumonisin B1 were found in 18 and 43 samples, respectively.
authors.affiliation: Ministry of Agriculture and Supply, Laboratory for Mycotoxin Analysis, Belo Horizonte, MG, Brazil. gena@cdlnet.com.br
authors.forename: E A
authors.initials: EA
authors.lastname: Vargas
authors.forename: R A
authors.initials: RA
authors.lastname: Preis
authors.forename: L
authors.initials: L
authors.lastname: Castro
authors.forename: C M
authors.initials: CM
authors.lastname: Silva
mesh_terms: D016604:Aflatoxin B1 / Q000032:analysis; D000348:Aflatoxins / Q000032:analysis*; D001938:Brazil; D002264:Carboxylic Acids / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D003720:Densitometry / Q000379:methods; D037341:Fumonisins; D006801:Humans; D003313:Zea mays / Q000737:chemistry*; D015025:Zearalenone / Q000032:analysis*
chemical_list: D000348:Aflatoxins; D002264:Carboxylic Acids; D037341:Fumonisins; C027955:aflatoxin G1; C029754:aflatoxin G2; C056933:fumonisin B1; D015025:Zearalenone; C029753:aflatoxin B2; D016604:Aflatoxin B1