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Selenium (Se), being an essential nutrient and a toxin, enters the food chain mainly via plants. Selenium isotope signatures were proved to be an excellent redox tracer, making it a promising tool for the exploration of the Se cycle in plants. The analytical method is sensitive on organic samples and requires particular preparation methods, which were developed and validated in this study. Plant cultivation setups revealed the applicability of these methods to trace plant internal processes.

analytical method validation --- Selen in Pflanzen --- HG-MC-ICP-MS-Analytik --- HG-MC-ICP-MS analytics --- Präparation organischer Umweltproben --- selenium in plants --- organic sample preparation --- Stabile Isotope --- Validierung analytischer Methodenselenium stable isotopes

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Food, by nature, is a biological substrate and is therefore capable of supporting the growth of microbials that are potential producers of toxic compounds. Among them mycotoxins, marine biotoxins, plant toxins, cyanogenic glycosides, and toxins occurring in poisonous mushrooms pose not only a risk to both human and animal health but also impact food security and nutrition by reducing people’s access to healthy food. This book collects some of the recent key improvements of analytical methodologies for the detection of natural toxins and their metabolites in food, and highlights the challenges yet to be resolved. Special emphasis is given to emerging or less-investigated toxins, to provide the scientific community with new tools and/or data supporting a better understanding of related food safety issues.

Research & information: general --- citreoviridin --- antibody --- immunoassay --- rice --- amatoxins --- amanitins --- monoclonal antibodies --- ELISA --- death cap mushrooms --- LC-MS --- pyrrolizidine alkaloid --- honey --- Parsonsia straminea --- lycopsamine --- indicine --- Heliotropium amplexicaule --- two dimensional layered nanomaterials --- electrochemical biosensors --- microbial toxin detection --- antibodies --- aptamers --- lateral flow immunoassay --- point-of-care --- mushroom poisoning --- oleandrin --- LC-MS/MS --- plant toxins --- validation --- herbs --- urine --- Aflatoxin M1 --- milk --- strip test immunoassay --- method validation --- CBA-N2a --- standardization --- matrix effects --- absorbance data --- ciguatoxins --- brevetoxins --- saxitoxins --- biological sample --- seafood safety --- citreoviridin --- antibody --- immunoassay --- rice --- amatoxins --- amanitins --- monoclonal antibodies --- ELISA --- death cap mushrooms --- LC-MS --- pyrrolizidine alkaloid --- honey --- Parsonsia straminea --- lycopsamine --- indicine --- Heliotropium amplexicaule --- two dimensional layered nanomaterials --- electrochemical biosensors --- microbial toxin detection --- antibodies --- aptamers --- lateral flow immunoassay --- point-of-care --- mushroom poisoning --- oleandrin --- LC-MS/MS --- plant toxins --- validation --- herbs --- urine --- Aflatoxin M1 --- milk --- strip test immunoassay --- method validation --- CBA-N2a --- standardization --- matrix effects --- absorbance data --- ciguatoxins --- brevetoxins --- saxitoxins --- biological sample --- seafood safety

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Food, by nature, is a biological substrate and is therefore capable of supporting the growth of microbials that are potential producers of toxic compounds. Among them mycotoxins, marine biotoxins, plant toxins, cyanogenic glycosides, and toxins occurring in poisonous mushrooms pose not only a risk to both human and animal health but also impact food security and nutrition by reducing people’s access to healthy food. This book collects some of the recent key improvements of analytical methodologies for the detection of natural toxins and their metabolites in food, and highlights the challenges yet to be resolved. Special emphasis is given to emerging or less-investigated toxins, to provide the scientific community with new tools and/or data supporting a better understanding of related food safety issues.

citreoviridin --- antibody --- immunoassay --- rice --- amatoxins --- amanitins --- monoclonal antibodies --- ELISA --- death cap mushrooms --- LC-MS --- pyrrolizidine alkaloid --- honey --- Parsonsia straminea --- lycopsamine --- indicine --- Heliotropium amplexicaule --- two dimensional layered nanomaterials --- electrochemical biosensors --- microbial toxin detection --- antibodies --- aptamers --- lateral flow immunoassay --- point-of-care --- mushroom poisoning --- oleandrin --- LC-MS/MS --- plant toxins --- validation --- herbs --- urine --- Aflatoxin M1 --- milk --- strip test immunoassay --- method validation --- CBA-N2a --- standardization --- matrix effects --- absorbance data --- ciguatoxins --- brevetoxins --- saxitoxins --- biological sample --- seafood safety --- n/a

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A compilation of 12 original research articles and a review on the development of instrumental and immunoanalytical methods for mycotoxins; on the enhancement of sample preparation and selection to improve method applicability; and on practical applications of analytical methods in laboratory fungal cultures, cereal and feed samples, surface water (as a novel matrix of mycotoxins as emerging surface water contaminants), and during mycotoxin decontamination by bacteria. Target analyte mycotoxins include aflatoxins, deoxynivalenol, diacetoxyscirpenol, fumonisins, fusarenone-X, HT-2 toxins, nivalenol, ochratoxins, sterigmatocystin, T-2 toxin, and zearalenone.

Research & information: general --- aflatoxins --- laboratory culture --- extraction --- HPLC --- recovery --- detection limits --- frequency mixing technology --- immunofiltration --- magnetic beads --- mycotoxin --- type B trichothecenes --- modified mycotoxins --- isomer separation --- method validation --- ochratoxin A --- fluorescence --- G-quadruplex --- biosensor --- computation --- simulation --- mycotoxins --- feed --- modified QuEChERS --- LC-MS/MS --- zearalenone --- immunochromatographic assay --- semi-quantification --- quantification --- aflatoxin B1 --- sterigmatocystin --- lactobacilli --- mycotoxin binding --- detoxification --- lactic acid bacteria --- colorimetric detection --- rapid tests --- ELISA --- lateral flow assays --- microfluidics --- nano-materials --- food safety --- commercialization --- immunosensor --- optical waveguide lightmode spectroscopy --- label-free detection --- planar waveguide sensor --- polarisation interferometer --- limit of detection --- competitive immunoassay --- fluorescence detection --- high-performance liquid chromatography --- total internal reflection ellipsometry --- aflatoxin --- chicken feed --- representative sampling --- improved aflatoxin test procedure --- validation --- n/a

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The purpose of this volume is to show how in this area the technology, creativity and inventiveness are the basis of new and encouraging results not only in the environmental field but also in the monitoring of xenobiotics of organic and inorganic origin in complex matrices. The final objective will always be on determining the fundamental parameters of interest to set up an analytical procedure, such as precision and trueness (that together give accuracy), the limits of detection and quantification, selectivity, and especially sensitivity, or attempting to increase this

azides --- screen-printed sensors --- poly (3-octylthiophene) --- solid contact potentiometric sensors --- iron-phthalocyanine --- nitron-azide complexes --- microwave-assisted aqueous two-phase extraction --- Solasodine --- alkaloid --- response surface methodology --- high-performance liquid chromatography --- pre-development process --- clotrimazole --- itraconazole --- stability --- method validation --- sporotrichosis --- differential pulse voltammetry --- hydrochlorothiazide --- pyridoxine --- chemometrics --- bioindication --- heavy metals --- urban soil --- Senecio vulgaris --- Poa annua --- Polygonum aviculare --- predictive models --- MIPs --- parabens --- biological matrix --- extraction procedure --- HPLC-PDA --- stationary phase characterization --- phenol --- 3-aminophenol --- wastewater --- SPMMTE --- capillary electrophoresis --- deoxynivalenol --- dcELISA kit --- performance measurement --- development --- grapevine --- bioaccumulation --- biomonitoring --- laser-induced breakdown spectroscopy --- surface pollution --- high voltage insulators --- quantitatively analysis