Production of neosolaniol monoacetate by an undescribedFusarium species resemblingF camptoceras |
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Authors: | EW Sydenham PG Thiel WFO Marasas SC Lamprecht |
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Affiliation: | 1. Research Institute for Nutritional Diseases, South African Medical Research Council, PO Box 70, 7505, Tygerberg, South Africa 2. Plant Protection Research Institute, Private Bag X5017, 7600, Stellenbosch, South Africa
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Abstract: | Cultures of 12 South African isolates of an undescribedFusarium species resembling but distinct fromF camptoceras were analysed for the presence of diacetoxyscirpenol (DAS), neosolaniol monoacetate (NMA), and T-2 toxin, by capillary gas chromatography utilizing electron capture detection. No DAS or T-2 toxin could be detected in any of the cultures of the isolates. NMA was, however, detected in 10 of the 12 isolates at levels ranging from 310 to 2060 ng/g. The method used, was primarily developed for the determination of DAS and T-2 toxin in fungal cultures and grain samples but was found to be suitable for the coextraction of NMA at an average recovery of 80.8%, with a detection limit in the order of 100 ng/g. Supportive evidence for the presence of the NMA was obtained by capillary gas chromatography / mass spectrometry. Regarded as a relatively rare trichothecene, NMA has never been reported to occur naturally and has previously been shown to be produced by only a fewFusarium strains. |
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