Abstract
Fumonisin derivatives obtained by esterification of fumonisin B₁ (FB₁) with palmitic, oleic and linoleic fatty acids have been recently described, but never reported in raw maize so far. In this study, the presence of oleoyl-EFB₁ (EFB₁OA) and linoleoyl-EFB₁ (EFB₁LA) in raw maize is reported by means of a suitable LC-ESI-MS/MS method. In addition, the production of EFB₁ derivatives by three Fusarium verticillioides strains is described on malt extract-based media and on corn meal-based growth media. EFB₁OA and EFB₁LA were produced by all considered strains in corn meal medium, with EFB₁LA > EFB₁OA. On the contrary, EFB₁OA and EFB₁LA were never observed in Fusarium cultures grown on a malt extract medium, suggesting that the esterification of FB₁ can occur only in a complex matrix such as maize.
MeSH terms
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Carcinogens, Environmental / analysis*
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Carcinogens, Environmental / chemistry
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Carcinogens, Environmental / metabolism
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Chromatography, High Pressure Liquid
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Culture Media, Conditioned / chemistry
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Esterification
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Fatty Acids / analysis*
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Fatty Acids / chemistry
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Fatty Acids / metabolism
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Food Contamination*
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Food Handling
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Fumonisins / analysis*
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Fumonisins / chemistry
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Fumonisins / metabolism
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Fusarium / growth & development
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Fusarium / isolation & purification
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Fusarium / metabolism
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Italy
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Linoleic Acid / analysis
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Linoleic Acid / chemistry
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Linoleic Acid / metabolism
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Molecular Structure
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Oleic Acid / analysis
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Oleic Acid / chemistry
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Oleic Acid / metabolism
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Seeds / chemistry*
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Seeds / microbiology
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Spectrometry, Mass, Electrospray Ionization
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Tandem Mass Spectrometry
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Zea mays / chemistry*
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Zea mays / microbiology
Substances
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Carcinogens, Environmental
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Culture Media, Conditioned
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Fatty Acids
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Fumonisins
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Oleic Acid
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fumonisin B1
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Linoleic Acid