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Updated: Jul 14, 2026

Quantification of Fungal Colonization, Sporogenesis, and Production of Mycotoxins Using Kernel Bioassays
Published on: April 23, 2012
Occurrence of fumonisins B1 and B2 in broa, typical Portuguese maize bread
C M Lino1, L J G Silva, A Pena
1Group of Bromatology - CEF, Faculty of Pharmacy, University of Coimbra, 3000-295 Coimbra, Portugal. cmlino@ci.uc.pt
Abstract:
Fumonisin B(1) (FB(1)) and fumonisin B(2) (FB(2)) are mycotoxins mainly produced by Fusarium verticillioides, and Fusarium proliferatum, fungi species most commonly isolated from maize. The natural occurrence of FB(1) and FB(2) in broa, typical Portuguese maize bread, was evaluated in 30 samples. Twenty five were found positive with levels ranging from 142 to 550 microg kg(-1). The limit established by the European regulations was exceeded by 27% of the samples. The tolerable daily intake for fumonisin B(1), and B(2), alone or in combination, for all of the analysed samples, was lower than 2 microg kg(-1) body weight per day established by the European Commission.
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