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American Chemical Society, Journal of Agricultural and Food Chemistry, 2(58), p. 949-953

DOI: 10.1021/jf902834g

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Isolation and NMR Characterization of Fumonisin B2and a New Fumonisin B6fromAspergillus niger

Journal article published in 2010 by Maria Månsson, Marie Louise Klejnstrup, Richard K. Phipps, Kristian F. Nielsen ORCID, Jens C. Frisvad, Charlotte H. Gotfredsen, Thomas O. Larsen
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This paper is available in a repository.

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Abstract

A new fumonisin, fumonisin B(6) (1), has been isolated by cation-exchange and reverse-phase chromatography, together with fumonisin B(2) (2), from stationary cultures of the fungus Aspergillus niger NRRL 326. Analysis of mass spectrometric and NMR data determined that FB(6) is a positional isomer of FB(1) and iso-FB(1), having hydroxyl functions at C3, C4, and C5. Analysis of the NMR data for FB(2) showed very similar chemical shift values when compared to an authentic Fusarium FB(2) standard, strongly indicating identical molecules despite that an absolute stereochemical assignment of FB(2) from A. niger was not possible.