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14 resultater
Determination of ergot alkaloids in rye and rye flour.
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An effective and timesaving analytical method was developed for the determination of 12 ergot alkaloids (ergometrine, ergotamine, ergocristine, α-ergokryptine, ergosine, ergocornine, and their respective -inine isomers) in rye and rye flour. Samples were extracted with dichloromethane/ethyl
Ergot alkaloids in some rye-based UK cereal products.
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UK rye-based cereal products were analysed for six major ergot alkaloids using an in-house-validated liquid chromatography-tandem mass spectrometry (LC-MS/MS) method that distinguished -ine and -inine epimers (isomers). Ergot alkaloids were detected in 25 of 28 samples subject to quantification
Ergot Alkaloids in Wheat and Rye Derived Products in Italy.
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Genus Claviceps is a plant pathogen able to produce a group of toxins, ergot alkaloids (EAs), whose effects have been known since the Middle Ages (ergotism). Claviceps purpurea is the most important representative specie, known to infect more than 400 monocotyledonous plants including
Variability in the content and composition of alkaloids found in Canadian ergot. I. Rye.
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The total alkaloid content and individual alkaloid composition were determined by colorimetry and high performance liquid chromatography, respectively, for Canadian rye ergot sclerotia. The total alkaloid content was highly variable between sclerotia from the same head, field, or region and ranged
[Effect of a hydrothermal treatment on ergot alkaloid content in ergot contaminated rye].
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Hydrothermal treatments are primarily used to increase the digestibility of nutrients and therefore to improve the feeding value of feedstuffs mainly for non-ruminants. Other positive side effects may occur, e.g. a decrease in toxicity of feed contaminated with mycotoxins. To study such effects, 4
Distribution of ergot alkaloids and ricinoleic acid in different milling fractions.
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The sclerotia of the fungus Claviceps sp. are still a challenge for the milling industry. Ergot sclerotia are a constant contamination of the rye crop and have to be removed by modern milling technologies. Changing sizes and coloration of the sclerotia make it difficult to separate them from the
Variability in the content and composition of alkaloid found in Canadian ergot. III. Triticale and barley.
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The total alkaloid content and individual alkaloid composition were determined by colorimetry and high performance liquid chromatography, respectively, for Canadian triticale and barley ergot (Claviceps purpurea). The total alkaloid content was highly variable between individual sclerotia from the
Degradation and epimerization of ergot alkaloids after baking and in vitro digestion.
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The degradation and epimerization of ergot alkaloids (EAs) in rye flour were investigated after baking cookies and subsequently subjecting them to an in vitro digestion model. Different steps of digestion were analyzed using salivary, gastric, and duodenal juices. The degradation and bidirectional
Determination of ergot alkaloids: purity and stability assessment of standards and optimization of extraction conditions for cereal samples.
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Results obtained from a purity study on standards of the 6 major ergot alkaloids ergometrine, ergotamine, ergosine, ergocristine, ergocryptine, and ergocornine and their corresponding epimers are discussed. The 6 ergot alkaloids studied have been defined by the European Food Safety Authority as
Production of peptide ergot alkaloids in submerged culture by three isolates of Claviceps purpurea.
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Three strains of Claviceps purpurea (Fr.) Tul., isolated from sclerotia grown on rye, produce under submerged conditions ergocryptine and ergotamine, ergocornine and ergosine, and ergocristine, respectively. All of the strains either lacked the ability to produce conidia or formed them sparingly,
[A method for the determination of ergot alkaloids in food].
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A suitable method has been developed for the routine analysis of the ergot alkaloids ergometrine, ergometrinine, ergosine, ergosinine, ergotamine, ergotaminine, ergocornine, ergocorninine, alpha-ergocryptine, alpha-ergocryptinine, beta-ergocryptine, beta-ergocryptinine, ergocristine and
Mass spectral characterization of ergot alkaloids by electrospray ionization, hydrogen/deuterium exchange, and multiple stage mass spectrometry: Usefulness of precursor ion scan experiments.
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Six ergot alkaloids belonging to the lysergic acid derivatives (ergonovine (EGN) and methysergide hydrogen maleinate (MHM)) and peptide-type derivatives (ergocristine (EGR), ergotamine (EGT), ergocornine (EGC) and alpha-ergokryptine (EGK)) were studied by positive electrospray tandem mass
Human and animal dietary exposure to ergot alkaloids
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The ergot alkaloids (EAs) are mycotoxins produced by several species of fungi in the genus Claviceps. In Europe, Claviceps purpurea is the most widespread species and it commonly affects cereals such as rye, wheat, triticale, barley, millets and oats. Food and feed samples used to
Impacts of Cereal Ergot in Food Animal Production.
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The negative impacts of ergot contamination of grain on the health of humans and animals were first documented during the fifth century AD. Although ergotism is now rare in humans, cleaning contaminated grain concentrates ergot bodies in screenings which are used as livestock feed. Ergot is found
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