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ergometrine/råg
Länken sparas på Urklipp
Sida 1 från 19 resultat
John Chassar Moir (1900-1977) and the discovery of ergometrine.
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Chassar Moir led the research in the early 1930s that resulted in the discovery and identification of ergometrine, the active water soluble component of ergot of rye. Its use in preventing and controlling postpartum haemorrhage has saved countless lives in the years since. As professor of obstetrics
Synthesis of M + 4 Stable Isotopomers of Ergometrine and Ergometrinine.
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The priority ergot alkaloids ergometrine and ergometrinine are highly toxic mycotoxins naturally occurring in different types of grains (i.e. rye, wheat, rice), as well as grain-based foods and, therefore, have gained increasing importance for food safety over the last years. The application of
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
A basic tool for risk assessment: a new method for the analysis of ergot alkaloids in rye and selected rye products.
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As a basis for the collection of occurrence and exposure data of ergot alkaloids in food, an HPLC method coupled with fluorimetric detection (HPLC-FLD) for the determination of 12 pharmacologically active ergot alkaloids in rye and rye products was developed. Samples were extracted with a mixture of
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
Lysergic acid amide as chemical marker for the total ergot alkaloids in rye flour - Determination by high-performance thin-layer chromatography-fluorescence detection.
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Ergot alkaloids are generally determined by high-performance liquid chromatography (HPLC) coupled to fluorescence detection (FLD) or mass selective detection, analyzing the individual compounds. However, fast and easy screening methods for the determination of the total ergot alkaloid content are
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
History of ergot alkaloids from ergotism to ergometrine.
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Epidemics of ergotism occurred frequently in the Middle Ages. They were a source of inspiration for artists and were popularly known as 'St. Anthony's Fire', resulting in gangrene, neurological diseases and death. It was caused by eating rye bread contaminated with the fungus claviceps purpurea. In
The history of ergot of rye (Claviceps purpurea) II: 1900-1940.
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Ergot, in 1900, was a 'chemical mess'. Henry Wellcome, the pharmaceutical manufacturer, invited Henry Hallett Dale, a physiologist, to join his research department and solve this problem. Dale, in turn, recruited an outstanding group of scientists, including George Barger, Arthur Ewins and Harold
Detection of Total Ergot Alkaloids in Cereal Flour and in Bread by a Generic Enzyme Immunoassay Method.
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Four sets of polyclonal antibodies against ergot alkaloids ergometrine, ergotamine, α-ergocryptine, and ergocornine were produced and characterized in a competitive direct or indirect enzyme immunoassay (EIA). Standard curve LODs were 0.03 ng/mL (ergometrine EIA) to 2.0 ng/mL (ergocornine EIA).
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
A new commercial strain of ergot adapted from a wild grass.
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A strain of Claviceps purpurea (Fr.) Tul. isolated from Arthraxon lancifolius Hochst. was successfully adapted on rye. Experimental cultivation on rye showed 370 kg/ha yield of sclerotia containing 0.5% total alkaloid which consisted of 33% ergometrine, 17.6% ergotamine, 18.7% ergocornine and 22.7%
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
Toxic effects, metabolism, and carry-over of ergot alkaloids in laying hens, with a special focus on changes of the alkaloid isomeric ratio in feed caused by hydrothermal treatment.
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Ergot alkaloids (EA) are mycotoxins formed by Claviceps purpurea. Due to the large variation in EA content, the mass proportion of ergot (hardened sclerotia) in animal diets is not suited to establish safe levels of EA. Therefore, the aim of the present study was to examine the dose-dependent
Localization of ergot alkaloids in sclerotia of Claviceps purpurea by matrix-assisted laser desorption/ionization mass spectrometry imaging.
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The fungus Claviceps purpurea produces highly toxic ergot alkaloids and accumulates these in the hardened bodies of fungal mycelium. These so-called sclerotia, or ergot bodies, replace the crop seed of infected plants, which can include numerous important food- and feedstuff such as rye and wheat.
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