Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 82 for “"mycotoxins"”.
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Mycotoxins in indoor environments. Determination using mass spectrometry.
… mold to an annual cost of 3.5 billion dollars. Mycotoxins are secondary metabolites produced by molds which may be e. g. cytotoxic (e. g. macrocyclic trichothecenes produced by Stachybotrys chartarum), genotoxic (e. g. sterigmatocystin and aflatoxins produced mainly by Aspergillus spp. including …
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Maize ear rot and associated mycotoxins in western Kenya
… Awareness of the potential risks associated with mycotoxins was low among the farmers and the extension workers. The Kenyan hybrids H627 and H622 were susceptible to Fusarium graminearum. The varieties did not show any difference in reaction to F. moniliforme and S. maydis. This fact was thought …
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Evaluating the emerging environmental risks of mycotoxins in freshwater ecosystems.
… and zearalenone (ZON) are two of the prominent mycotoxins which regularly contaminate food, both of these natural toxins are produced by fungi within the Fusarium genus. With the known widespread occurrence of these toxins in cereal crops there has been rising interest into the potential …
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The biological properties of three trichothecene mycotoxins produces by fusaris
The highly toxic fungal metabolite, neosolaniol monoacetate, was isolated and purified from cultures of Fusarium sambucinum. Since little is known about its toxic properties, the biological effects of this trichothecene were compared to those caused by diacetoxy-scirpenol in male Wistar rats. The …
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Toxicity of mycotoxins to insects and underlying molecular and biochemical mechanisms
Mycotoxins are synthesized by fungi and released as secondary metabolites toxic to many animal species. The structurally diverse mycotoxins can be carcinogenic, mutagenic, teratogenic, estrogenic, hemorrhagic, immunotoxic, nephrotoxic, hepatotoxic, dermotoxic, and neurotoxic to humans and other …
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Auswirkungen von hohem hydrostatischem Druck auf Schimmelpilze und die Synthese des Mycotoxins Patulin
… expansum sowie auf die Syntheserate des Mycotoxins Patulin durch Penicillium expansum. Die Hochdruckinaktivierung von Konidiosporen verläuft in den meisten Fällen zweipha-sig. Diese Inaktivierungskurven können in guter Näherung durch eine Überlagerung zweier Reaktionen 1. Ordnung …
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The Role of Gastrointestinal Microflora in the Metabolism and Toxicity of Trichothecene Mycotoxins
The three trichothecene mycotoxins, T-2 toxin, diacetoxyscirpenol (DAS) and deoxynivalenol (DON) were incubated in vitro under anaerobic conditions with bovine rumen microorganisms. Gas chromatographic and gas chromatography/mass spectrometric analysis of the extracts demonstrated that all three …
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Determination of farm animal exposure to multiple mycotoxins and assessment of novel mycotoxin binders
… and quality, but also produce vast number of mycotoxins, which pose serious adverse health effects in human and animals. The overall aim of this thesis was to determine exposure of farm animals to multiple mycotoxins and to assess wide range of products, for their potential to bind mycotoxins. …
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Mycotoxins Risk in Maize Fields in Relation to Insect and Edaphic Factors in South Dakota
<p>Mycotoxins can occur at concentrations that are above the tolerance level recommended for human and animal consumption in conventional and Bt maize hybrids. The relationship of insect abundance, insect kernel damage and edaphic factors with mycotoxin concentrations in conventional and Bt maize …
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Development of multi-mycotoxin UHPLC-MS/MS methods and application to oat and beer samples
… for the identification and quantitation of 42 mycotoxins in unprocessed oat grains intended for human consumption. The method included all the mycotoxins listed under the current European legislation as well as a wide range of analytes of emerging toxicological interest. A rapid, …
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Preliminary investigation of the natural contamination of agricultural crops with selected mycotoxins in northern rural South Africa (Limpopo and Mpumalanga Provinces)
… poor storage practices and contamination with mycotoxins, particularly fumonisins and aflatoxins impacts adversely on production, food safety and food security. Mycotoxins are toxic natural food-borne compounds which frequently contaminate agricultural produce worldwide. They are hazardous to …
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Identification and Characterization of Novel Mycotoxin Degrading Enzymes
… throughout the agricultural supply chain produce mycotoxins, which are harmful secondary metabolites that aid fungal colonization and contaminate food and feed. Consuming mycotoxin-contaminated products poses health risks to humans and animals. While several strategies to limit mycotoxin …
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Nutritional strategies to control mycotoxin damages in swine
Mycotoxins are contaminants of agricultural products both in the field and during storage and can enter the food chain through contaminated cereals and foods (milk, meat, and eggs) obtained from animals fed mycotoxin contaminated feeds. Mycotoxins are genotoxic carcinogens that cause health and …
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Fusarium in winter wheat: mycotoxin accumulation in straw and a survey of roots
… head blight (FHB). In recent years, Fusarium mycotoxins, primarily deoxynivalenol (DON), 3-acetyldeoxynivalenol (3ADON), and 15-acetyldeoxynivaleol (15ADON), have been detected in conjunction with wheat straw, a substrate commonly used for livestock bedding. Little is known about how or why …
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Strategies to detoxify the mycotoxin deoxynivalenol and improve food safety in the U.S.
Mycotoxins are toxic secondary metabolites produced by fungi that are a threat to the health of humans and domestic animals. The most important mycotoxin in the U.S. is deoxynivalenol (DON), which causes symptoms such as vomiting, feed refusal, and weight loss in farm animals. The fungus Fusarium …
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DNA as a Catalyst and as a Sensor: Investigating the Structure of the Ty1 Retrotransposition Intermediate and the Utility of DNA -Based Biosensors
… acid enzyme. The targets for our sensors are mycotoxins, which are secondary metabolites of fungi. Mycotoxins have been found in crops during harvesting and storage. Consumption of mycotoxin-contaminated crops can lead to toxic effects in humans and animals, making it necessary to survey crops …
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Zearalenone contamination in swine feed and the effects on reproductive health
… the prevalence of ZEN and related Fusarium mycotoxins in swine feed and ingredients, and (5) track ZEN and related Fusarium mycotoxins throughout production of beer and brewers' spent grains (BSG). Results from this work can help stakeholders to mitigate mycotoxin contamination in swine …
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