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Rudolf Krska - One of the best experts on this subject based on the ideXlab platform.
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masked mycotoxins determination of a deoxynivalenol Glucoside in artificially and naturally contaminated wheat by liquid chromatography tandem mass spectrometry
Journal of Agricultural and Food Chemistry, 2005Co-Authors: Franz Berthiller, Chiara Dallasta, Rainer Schuhmacher, Marc Lemmens, G Adam, Rudolf KrskaAbstract:Conjugated mycotoxins, in which the toxin is usually bound to a more polar substance like glucose, are referred to as masked mycotoxins, as these substances escape routine detection methods but can release their toxic precursors after hydrolysis. This is the first report on the natural occurrence of a Glucoside of deoxynivalenol (DON) in Fusarium-infected wheat and maize. To obtain appropriate standards, we chemically synthesized deoxynivalenol-3-β-d-glucopyranoside (DON-3-Glucoside) and deoxynivalenol-15-β-d-glucopyranoside (DON-15-Glucoside). The synthesis products were characterized by liquid chromatography−tandem mass spectrometry. The DON-Glucosides showed different collision-induced dissociation (CID) fragmentation behaviors and could therefore be distinguished. Wheat plants were either treated with DON (n = 52) or with Fusarium spp. (n = 4) at anthesis, and after harvest, wheat ears were analyzed for DON and DON-Glucosides. All 56 treated wheat samples contained DON and a DON-Glucoside with the sam...
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masked mycotoxins determination of a deoxynivalenol Glucoside in artificially and naturally contaminated wheat by liquid chromatography tandem mass spectrometry
Journal of Agricultural and Food Chemistry, 2005Co-Authors: Franz Berthiller, Chiara Dallasta, Rainer Schuhmacher, Marc Lemmens, G Adam, Rudolf KrskaAbstract:Conjugated mycotoxins, in which the toxin is usually bound to a more polar substance like glucose, are referred to as masked mycotoxins, as these substances escape routine detection methods but can release their toxic precursors after hydrolysis. This is the first report on the natural occurrence of a Glucoside of deoxynivalenol (DON) in Fusarium-infected wheat and maize. To obtain appropriate standards, we chemically synthesized deoxynivalenol-3-beta-D-glucopyranoside (DON-3-Glucoside) and deoxynivalenol-15-beta-D-glucopyranoside (DON-15-Glucoside). The synthesis products were characterized by liquid chromatography-tandem mass spectrometry. The DON-Glucosides showed different collision-induced dissociation (CID) fragmentation behaviors and could therefore be distinguished. Wheat plants were either treated with DON (n = 52) or with Fusarium spp. (n = 4) at anthesis, and after harvest, wheat ears were analyzed for DON and DON-Glucosides. All 56 treated wheat samples contained DON and a DON-Glucoside with the same retention time, molecular mass, and CID fragmentation behavior as the synthetic DON-3-Glucoside. Moreover, the DON-Glucoside was also found in two out of three analyzed naturally DON-contaminated maize and in five out of five naturally contaminated wheat samples, in a range from 4 to 12% of the DON concentration. To further confirm the identity of the DON-Glucoside, the compound was isolated from wheat extracts and characterized as DON-3-Glucoside with NMR. The results of this study indicate the importance to consider both DON and DON-3-Glucoside with regard to food and feed safety.
Franz Berthiller - One of the best experts on this subject based on the ideXlab platform.
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masked mycotoxins determination of a deoxynivalenol Glucoside in artificially and naturally contaminated wheat by liquid chromatography tandem mass spectrometry
Journal of Agricultural and Food Chemistry, 2005Co-Authors: Franz Berthiller, Chiara Dallasta, Rainer Schuhmacher, Marc Lemmens, G Adam, Rudolf KrskaAbstract:Conjugated mycotoxins, in which the toxin is usually bound to a more polar substance like glucose, are referred to as masked mycotoxins, as these substances escape routine detection methods but can release their toxic precursors after hydrolysis. This is the first report on the natural occurrence of a Glucoside of deoxynivalenol (DON) in Fusarium-infected wheat and maize. To obtain appropriate standards, we chemically synthesized deoxynivalenol-3-β-d-glucopyranoside (DON-3-Glucoside) and deoxynivalenol-15-β-d-glucopyranoside (DON-15-Glucoside). The synthesis products were characterized by liquid chromatography−tandem mass spectrometry. The DON-Glucosides showed different collision-induced dissociation (CID) fragmentation behaviors and could therefore be distinguished. Wheat plants were either treated with DON (n = 52) or with Fusarium spp. (n = 4) at anthesis, and after harvest, wheat ears were analyzed for DON and DON-Glucosides. All 56 treated wheat samples contained DON and a DON-Glucoside with the sam...
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masked mycotoxins determination of a deoxynivalenol Glucoside in artificially and naturally contaminated wheat by liquid chromatography tandem mass spectrometry
Journal of Agricultural and Food Chemistry, 2005Co-Authors: Franz Berthiller, Chiara Dallasta, Rainer Schuhmacher, Marc Lemmens, G Adam, Rudolf KrskaAbstract:Conjugated mycotoxins, in which the toxin is usually bound to a more polar substance like glucose, are referred to as masked mycotoxins, as these substances escape routine detection methods but can release their toxic precursors after hydrolysis. This is the first report on the natural occurrence of a Glucoside of deoxynivalenol (DON) in Fusarium-infected wheat and maize. To obtain appropriate standards, we chemically synthesized deoxynivalenol-3-beta-D-glucopyranoside (DON-3-Glucoside) and deoxynivalenol-15-beta-D-glucopyranoside (DON-15-Glucoside). The synthesis products were characterized by liquid chromatography-tandem mass spectrometry. The DON-Glucosides showed different collision-induced dissociation (CID) fragmentation behaviors and could therefore be distinguished. Wheat plants were either treated with DON (n = 52) or with Fusarium spp. (n = 4) at anthesis, and after harvest, wheat ears were analyzed for DON and DON-Glucosides. All 56 treated wheat samples contained DON and a DON-Glucoside with the same retention time, molecular mass, and CID fragmentation behavior as the synthetic DON-3-Glucoside. Moreover, the DON-Glucoside was also found in two out of three analyzed naturally DON-contaminated maize and in five out of five naturally contaminated wheat samples, in a range from 4 to 12% of the DON concentration. To further confirm the identity of the DON-Glucoside, the compound was isolated from wheat extracts and characterized as DON-3-Glucoside with NMR. The results of this study indicate the importance to consider both DON and DON-3-Glucoside with regard to food and feed safety.
Marc Lemmens - One of the best experts on this subject based on the ideXlab platform.
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masked mycotoxins determination of a deoxynivalenol Glucoside in artificially and naturally contaminated wheat by liquid chromatography tandem mass spectrometry
Journal of Agricultural and Food Chemistry, 2005Co-Authors: Franz Berthiller, Chiara Dallasta, Rainer Schuhmacher, Marc Lemmens, G Adam, Rudolf KrskaAbstract:Conjugated mycotoxins, in which the toxin is usually bound to a more polar substance like glucose, are referred to as masked mycotoxins, as these substances escape routine detection methods but can release their toxic precursors after hydrolysis. This is the first report on the natural occurrence of a Glucoside of deoxynivalenol (DON) in Fusarium-infected wheat and maize. To obtain appropriate standards, we chemically synthesized deoxynivalenol-3-β-d-glucopyranoside (DON-3-Glucoside) and deoxynivalenol-15-β-d-glucopyranoside (DON-15-Glucoside). The synthesis products were characterized by liquid chromatography−tandem mass spectrometry. The DON-Glucosides showed different collision-induced dissociation (CID) fragmentation behaviors and could therefore be distinguished. Wheat plants were either treated with DON (n = 52) or with Fusarium spp. (n = 4) at anthesis, and after harvest, wheat ears were analyzed for DON and DON-Glucosides. All 56 treated wheat samples contained DON and a DON-Glucoside with the sam...
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masked mycotoxins determination of a deoxynivalenol Glucoside in artificially and naturally contaminated wheat by liquid chromatography tandem mass spectrometry
Journal of Agricultural and Food Chemistry, 2005Co-Authors: Franz Berthiller, Chiara Dallasta, Rainer Schuhmacher, Marc Lemmens, G Adam, Rudolf KrskaAbstract:Conjugated mycotoxins, in which the toxin is usually bound to a more polar substance like glucose, are referred to as masked mycotoxins, as these substances escape routine detection methods but can release their toxic precursors after hydrolysis. This is the first report on the natural occurrence of a Glucoside of deoxynivalenol (DON) in Fusarium-infected wheat and maize. To obtain appropriate standards, we chemically synthesized deoxynivalenol-3-beta-D-glucopyranoside (DON-3-Glucoside) and deoxynivalenol-15-beta-D-glucopyranoside (DON-15-Glucoside). The synthesis products were characterized by liquid chromatography-tandem mass spectrometry. The DON-Glucosides showed different collision-induced dissociation (CID) fragmentation behaviors and could therefore be distinguished. Wheat plants were either treated with DON (n = 52) or with Fusarium spp. (n = 4) at anthesis, and after harvest, wheat ears were analyzed for DON and DON-Glucosides. All 56 treated wheat samples contained DON and a DON-Glucoside with the same retention time, molecular mass, and CID fragmentation behavior as the synthetic DON-3-Glucoside. Moreover, the DON-Glucoside was also found in two out of three analyzed naturally DON-contaminated maize and in five out of five naturally contaminated wheat samples, in a range from 4 to 12% of the DON concentration. To further confirm the identity of the DON-Glucoside, the compound was isolated from wheat extracts and characterized as DON-3-Glucoside with NMR. The results of this study indicate the importance to consider both DON and DON-3-Glucoside with regard to food and feed safety.
G Adam - One of the best experts on this subject based on the ideXlab platform.
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masked mycotoxins determination of a deoxynivalenol Glucoside in artificially and naturally contaminated wheat by liquid chromatography tandem mass spectrometry
Journal of Agricultural and Food Chemistry, 2005Co-Authors: Franz Berthiller, Chiara Dallasta, Rainer Schuhmacher, Marc Lemmens, G Adam, Rudolf KrskaAbstract:Conjugated mycotoxins, in which the toxin is usually bound to a more polar substance like glucose, are referred to as masked mycotoxins, as these substances escape routine detection methods but can release their toxic precursors after hydrolysis. This is the first report on the natural occurrence of a Glucoside of deoxynivalenol (DON) in Fusarium-infected wheat and maize. To obtain appropriate standards, we chemically synthesized deoxynivalenol-3-β-d-glucopyranoside (DON-3-Glucoside) and deoxynivalenol-15-β-d-glucopyranoside (DON-15-Glucoside). The synthesis products were characterized by liquid chromatography−tandem mass spectrometry. The DON-Glucosides showed different collision-induced dissociation (CID) fragmentation behaviors and could therefore be distinguished. Wheat plants were either treated with DON (n = 52) or with Fusarium spp. (n = 4) at anthesis, and after harvest, wheat ears were analyzed for DON and DON-Glucosides. All 56 treated wheat samples contained DON and a DON-Glucoside with the sam...
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masked mycotoxins determination of a deoxynivalenol Glucoside in artificially and naturally contaminated wheat by liquid chromatography tandem mass spectrometry
Journal of Agricultural and Food Chemistry, 2005Co-Authors: Franz Berthiller, Chiara Dallasta, Rainer Schuhmacher, Marc Lemmens, G Adam, Rudolf KrskaAbstract:Conjugated mycotoxins, in which the toxin is usually bound to a more polar substance like glucose, are referred to as masked mycotoxins, as these substances escape routine detection methods but can release their toxic precursors after hydrolysis. This is the first report on the natural occurrence of a Glucoside of deoxynivalenol (DON) in Fusarium-infected wheat and maize. To obtain appropriate standards, we chemically synthesized deoxynivalenol-3-beta-D-glucopyranoside (DON-3-Glucoside) and deoxynivalenol-15-beta-D-glucopyranoside (DON-15-Glucoside). The synthesis products were characterized by liquid chromatography-tandem mass spectrometry. The DON-Glucosides showed different collision-induced dissociation (CID) fragmentation behaviors and could therefore be distinguished. Wheat plants were either treated with DON (n = 52) or with Fusarium spp. (n = 4) at anthesis, and after harvest, wheat ears were analyzed for DON and DON-Glucosides. All 56 treated wheat samples contained DON and a DON-Glucoside with the same retention time, molecular mass, and CID fragmentation behavior as the synthetic DON-3-Glucoside. Moreover, the DON-Glucoside was also found in two out of three analyzed naturally DON-contaminated maize and in five out of five naturally contaminated wheat samples, in a range from 4 to 12% of the DON concentration. To further confirm the identity of the DON-Glucoside, the compound was isolated from wheat extracts and characterized as DON-3-Glucoside with NMR. The results of this study indicate the importance to consider both DON and DON-3-Glucoside with regard to food and feed safety.
Chiara Dallasta - One of the best experts on this subject based on the ideXlab platform.
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masked mycotoxins determination of a deoxynivalenol Glucoside in artificially and naturally contaminated wheat by liquid chromatography tandem mass spectrometry
Journal of Agricultural and Food Chemistry, 2005Co-Authors: Franz Berthiller, Chiara Dallasta, Rainer Schuhmacher, Marc Lemmens, G Adam, Rudolf KrskaAbstract:Conjugated mycotoxins, in which the toxin is usually bound to a more polar substance like glucose, are referred to as masked mycotoxins, as these substances escape routine detection methods but can release their toxic precursors after hydrolysis. This is the first report on the natural occurrence of a Glucoside of deoxynivalenol (DON) in Fusarium-infected wheat and maize. To obtain appropriate standards, we chemically synthesized deoxynivalenol-3-β-d-glucopyranoside (DON-3-Glucoside) and deoxynivalenol-15-β-d-glucopyranoside (DON-15-Glucoside). The synthesis products were characterized by liquid chromatography−tandem mass spectrometry. The DON-Glucosides showed different collision-induced dissociation (CID) fragmentation behaviors and could therefore be distinguished. Wheat plants were either treated with DON (n = 52) or with Fusarium spp. (n = 4) at anthesis, and after harvest, wheat ears were analyzed for DON and DON-Glucosides. All 56 treated wheat samples contained DON and a DON-Glucoside with the sam...
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masked mycotoxins determination of a deoxynivalenol Glucoside in artificially and naturally contaminated wheat by liquid chromatography tandem mass spectrometry
Journal of Agricultural and Food Chemistry, 2005Co-Authors: Franz Berthiller, Chiara Dallasta, Rainer Schuhmacher, Marc Lemmens, G Adam, Rudolf KrskaAbstract:Conjugated mycotoxins, in which the toxin is usually bound to a more polar substance like glucose, are referred to as masked mycotoxins, as these substances escape routine detection methods but can release their toxic precursors after hydrolysis. This is the first report on the natural occurrence of a Glucoside of deoxynivalenol (DON) in Fusarium-infected wheat and maize. To obtain appropriate standards, we chemically synthesized deoxynivalenol-3-beta-D-glucopyranoside (DON-3-Glucoside) and deoxynivalenol-15-beta-D-glucopyranoside (DON-15-Glucoside). The synthesis products were characterized by liquid chromatography-tandem mass spectrometry. The DON-Glucosides showed different collision-induced dissociation (CID) fragmentation behaviors and could therefore be distinguished. Wheat plants were either treated with DON (n = 52) or with Fusarium spp. (n = 4) at anthesis, and after harvest, wheat ears were analyzed for DON and DON-Glucosides. All 56 treated wheat samples contained DON and a DON-Glucoside with the same retention time, molecular mass, and CID fragmentation behavior as the synthetic DON-3-Glucoside. Moreover, the DON-Glucoside was also found in two out of three analyzed naturally DON-contaminated maize and in five out of five naturally contaminated wheat samples, in a range from 4 to 12% of the DON concentration. To further confirm the identity of the DON-Glucoside, the compound was isolated from wheat extracts and characterized as DON-3-Glucoside with NMR. The results of this study indicate the importance to consider both DON and DON-3-Glucoside with regard to food and feed safety.
