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 21 for “"Cyanotoxins"”.
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Uptake and depuration of cyanotoxins in the common blue mussel Mytilus edulis.
… enable the simultaneous detection of DA and nine cyanotoxins. This method was then utilised to determine cyanotoxin concentration in laboratory cyanobacteria strains. To assess the accumulation and depuration of cyanotoxins in the common blue mussel Mytilus edulis, three feeding trials were …
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Toxic cyanobacteria, cyanotoxins and drinking water production in Ghana: implications to human health
… risk to human health through exposure to cyanotoxins such as microcystins and cylindrospermopsin. Even though the concentrations of dissolved microcystins obtained in the reservoirs and drinking water supplies were lower than the WHO limit, there is potentially a risk to public health and …
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An investigation into the biodegradation of peptide cyanotoxins (microcystins and nodularin) by novel gram-positive bacteria.
Cyanobacterial secondary metabolites, microcystins (MC) and nodularin (NOD) have become common contaminants in most aquatic ecosystems over recent years presenting a hazard to animal and human health. Unfortunately, these chemically diverse peptide hepatotoxins remain a challenge to most …
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Assessment of co-occurrence of cyanotoxins, toxic metals and anionic surfactants in irrigation water, agricultural soils and food crops
… produces secondary metabolites, known as cyanotoxins that cause acute and chronic poisoning in animals and humans. History of mining, industrial activities and poor maintenance of wastewater treatment infrastructure are the main causes of the hyper-eutrophic conditions affecting most dams …
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The occurrence of toxic and non-toxic cyanobacteria species in water supplies destined for maize meal preparation process: A case study of Vhembe District
… produce secondary metabolites called cyanotoxins, which are harmful to human health. Human exposure to cyanotoxins can occur in various ways, however, the oral route is the most important. This is mainly through drinking water or eating contaminated food. Studies on cyanotoxin …
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Harmful algae, algal toxin, taste and odor control and mitigation in public water system
… of toxic algae (cyanobacteria) to produce cyanotoxins including microcystins (MCs), mainly MC-LR, cylindrospermopsin (CYN), and taste and odor (T&O) compounds. Various types of chemicals are widely used in drinking water treatment plants as oxidants for treating source water challenged with …
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Raman Spectroscopy for Monitoring of Microcystins in Water
… their capacity to produce microcystins and other cyanotoxins that are deadly to humans, livestock, pets, and aquatic life at low doses. Unfortunately, the strategies currently employed for cyanotoxin detection involve laborious analyses requiring significant expertise or bioassay kits that are …
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Monitoring and regulating cyanobacterial metabolites (microcystins and geosmin) in aquatic systems.
… can cause serious harm to animals and humans (cyanotoxins) and can have a major financial impact on the potable water and aquaculture industries (taste and odour compounds). Understanding the factors that affect cyanotoxin production can help in exploring means for the control of these …
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Bioaccumulation of microcystins in terrestrial food plants and the development of novel sorbents for monitoring microcystins in irrigation water
… species have the potential to produce cyanotoxins that pose health risks to livestock and humans. Recently, there have been evidence of the toxic effects of microcystins (MCs) and cylindrospermopsin (CYN) on terrestrial plants including plants used for food. Ever since, the use of …
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Investigation of novel methods to remove the cyanotoxin, Cylindrospermopsin, from drinking water.
… form toxic algal blooms. These toxins, known as cyanotoxins, are produced as secondary metabolites by several cyanobacterial species. Cyanotoxins affect not only aquatic ecosystems but also impact on human health. The current work focuses on the cyanotoxin cylindrospermopsin that was originally …
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Interspecies interplay between cyanobacteria and green algae - the first step to know why cyanobacteria produce what we call “Toxins”
… attention due to their ability to produce cyanotoxins. Among cyanotoxins, microcystins (MCs) are the most commonly studied. However, their significance for the producing species beyond their toxicity is still mysterious (was reviewed in Paper I). In the present study, the interactions …
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Chlorine dioxide impacts on microcystis aeruginosa cell stress, growth and microcystin production
… hypothesized to trigger increased production of cyanotoxins.;Here, chlorine dioxide (ClO2) was tested to inhibit a toxin-producing strain of Microcystis aeruginosa. Through a series of experiments, ClO2 was exposed to M. aeruginosa, and the production of microcystin was monitored. The first …
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Fatores reguladores da dominância de Cylindrospermopsis raciborskii (Woloszynska) Seenayya & Subba-Raju no Reservatório Tabocas, Caruaru, PE
… a massive human intoxication associated with cyanotoxins was registered. After that, a detailed monitoring program was established, including phytoplankton ecology studies. Since cyanophytes were the dominant algal group and considering their potential relevance to public health, the goals of …
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A comparative study of the origins of cyanobacteria at Musina Water Treatment Plant using DNA fingerprints
… but present in all other selected rivers. The cyanotoxins detection was also based on PCR by amplification of microcystin/nodularin and cylindrospermopsin polyketide synthetase genes. Most of the samples showed no amplification of the toxin genes. While two samples showed the amplification of …
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Development of optical bio-sensing methods for detection of toxins produced by algae.
… is perhaps the most toxic from a large family of cyanotoxins; it is known to cause liver damage and also acts as a carcinogen. The World Health Organization has set the limit of 1pg/l for MC-LR in drinking water. However existing detection methods, such as ELISA, cannot provide such high …
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Modelling of environmental parameters in lake environmnets using neural networks
… problems like anoxia, the existence of harmful cyanotoxins etc. Therefore, this study is focused on the assessment of the environmental parameters that are related with the phenomenon of the eutrophication. The mathematical models are capable to contribute positively to the restoration of the …
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Microplastics as a vector for micropollutants in aquatic environments.
… potential role of microplastics as a vector for cyanotoxins (microcystins) and anthropogenic contaminants (pharmaceuticals) in freshwater. To this end, polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), polyamide (PA), polystyrene (PS), and polyvinyl chloride (PVC) …
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The destruction of the cyanobacterial toxin microcystin-LR by semiconductor photocatalysis.
… human poisonings resulting from the presence of cyanotoxins in potable waters, some of which have resulted in fatalities. The most frequently cited cyanotoxin in these poisonings has been microcystin-LR, which has prompted the World Health Organisation (WHO) to set a guideline for the recommended …
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Factors affecting the growth and toxin content of key cyanobacteria species in a changing world.
… amongst these are many potent toxins (cyanotoxins), which can present substantial risks to human, animal and environmental health. Where risk mitigation strategies are implemented, they are usually based on cyanobacteria cell counts. However, not all cyanobacteria taxa produce toxins, …
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