Determination of peptaibol trace amounts in marine sediments by liquid chromatography/electrospray ionization-ion trap-mass spectrometry.
Journal of Chromatography A(2007)
Abstract
Extraction followed by reverse phase liquid chromatography (LC)/electrospray ionization-ion trap-mass spectrometry (ESI-IT-MS) analysis has been successfully developed for the determination of peptaibols, fungal toxic metabolites, in marine sediments. Spiking experiments showed that the mean recovery of target compounds exceeded 85% at a spiking level of 10ng/g of sediment (wet weight). Detection and quantification limits were 250 and 830pg/g of sediment, respectively. The method developed constituted the first sensitive assay for quantification of peptaibol trace amounts in a natural environment. A concentration of 5ng/g in sediment samples collected from Fier d’Ars was found.
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Key words
Fungal peptide metabolites,Trichoderma sp.,Marine fungal contamination,Electrospray ionization-ion trap-mass spectrometry (ESI-IT-MS),Matrix matched calibration
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