Journal
TOXINS
Volume 7, Issue 9, Pages 3700-3714Publisher
MDPI
DOI: 10.3390/toxins7093700
Keywords
LC-Orbitrap MS; fumonisin; Fusarium; corn; N-(1-deoxy-d-fructos-1-yl) fumonisin
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Funding
- Ministry of Agriculture, Forestry and Fisheries of Japan
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The existence of glucose conjugates of fumonisin B-2 (FB2) and fumonisin B-3 (FB3) in corn powder was confirmed for the first time. These bound-fumonisins (FB2 and FB3 bound to glucose) were identified as N-(1-deoxy-d-fructos-1-yl) fumonisin B-2 (NDfrc-FB2) and N-(1-deoxy-d-fructos-1-yl) fumonisin B-3 (NDfrc-FB3) respectively, based on the accurate mass measurements of characteristic ions and fragmentation patterns using high-resolution liquid chromatography-Orbitrap mass spectrometry (LC-Orbitrap MS) analysis. Treatment on NDfrc-FB2 and NDfrc-FB3 with the o-phthalaldehyde (OPA) reagent also supported that d-glucose binding to FB2 and FB3 molecules occurred to their primary amine residues.
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