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001-es BibID:	BIBFORM055343
Első szerző:	Bartók Tibor
Cím:	ESI-MS and MS/MS identification of the first ceramide analogues of fumonisin B1 mycotoxin from a Fusarium verticillioides culture following RP-HPLC separation / Bartók Tibor, Szécsi Árpád, Juhász Krisztina, Bartók Mihály, Mesterházy Ákos
Dátum:	2013
ISSN:	1944-0049 1944-0057
Megjegyzések:	Following the earlier detection of six new esterified fumonisin B1 (EFB1) isomers containing three acyl groups in aFusarium verticillioides-inoculated rice culture, it was assumed that linoleic, palmitic or oleic acid esterifies one of the freeOH groups on the fumonisin backbone. On the basis of the results of our recent investigations we now propose that theseEFB1 isomers are actually 3-O- and 5-O-acyl derivatives of FB1 (3-O-linoleoyl-FB1, 5-O-linoleoyl-FB1, 3-O-palmitoyl-FB1, 5-O-palmitoyl-FB1, 3-O-oleoyl-FB1 and 5-O-oleoyl-FB1). A F. verticillioides strain was identified that produced notonly O-acyl-FB1 isomers, but also low amounts of three N-acyl derivatives (N-linoleoyl-FB1, N-palmitoyl-FB1 and Noleoyl-FB1), which eluted from the HPLC column after the six O-acyl compounds and in the same sequence as for the Oacylcompounds. The characteristic positive and negative ESI-MS/MS spectra obtained after solid-phase extraction of theculture extract facilitated identification of these N-acyl-FB1 derivatives. The biosynthesis of N-palmitoyl-FB1 by F.verticillioides was verified by spiking the culture extract with synthetic N-palmitoyl-FB1. This is the first report of theseparation and mass spectrometric identification of the six O-acyl- and three N-acyl-FB1 derivatives extracted from a F.verticillioides culture.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban LC/MS extraction mycotoxins-fumonisins rice culture
Megjelenés:	Food Additives & Contaminants Part A. - 30 : 9 (2013), p. 1651-1659. -
További szerzők:	Szécsi Árpád Juhász Krisztina (1980-) (biológus-ökológus) Bartók Mihály Mesterházy Ákos
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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