Search Results - "Vincent, Ursula"

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    European union reference laboratory for feed additives: experience from 11 years organising proficiency testing by von Holst, Christoph, Serano, Federica, Chedin, Mostafa, Vincent, Ursula

    Published in Italian journal of animal science (31-12-2024)
    “…Feed additives are individually authorised within the European Union (EU) specifying the conditions of their use under real-world conditions. These criteria…”
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    Journal Article
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    Determination of urea in compound feed for ruminants: interlaboratory comparison for the validation of the spectrophotometric method in Commission Regulation (EC) No 152/2009 by Carlos Gonçalves, Katrien Bouten, Håkan Emteborg, Joerg Stroka, Christoph von Holst, Ursula Vincent

    “…Description of the subject. Urea is a feed additive authorized in ruminant feedingstuff with a maximum content in compound feed of 8,800 mg·kg-1. Commission…”
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    Determination of ionophore coccidiostats in feeding stuffs by liquid chromatography–tandem mass spectrometry. Part II. Application to cross-contamination levels and non-targeted feed by Vincent, Ursula, Ezerskis, Zigmas, Chedin, Mostafa, von Holst, Christoph

    “…A fit to purpose multi-analyte method for the official control of six coccidiostats (monensin sodium, salinomycin sodium, narasin, lasalocid sodium,…”
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    Revision of a European Union Official Method to Enforce Legal Provisions: The Case of Diclazuril by Vincent, Ursula, Ezerskis, Zigmas, von Holst, Christoph

    Published in Journal of AOAC International (01-03-2019)
    “…Diclazuril is a coccidiostat currently authorized as feed additive in the European Union (EU), with a legal limit set at 1 mg/kg. For official control, an…”
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    Development and validation of a multi-analyte method for the regulatory control of carotenoids used as feed additives in fish and poultry feed by Vincent, Ursula, Serano, Federica, von Holst, Christoph

    “…Carotenoids are used in animal nutrition mainly as sensory additives that favourably affect the colour of fish, birds and food of animal origin. Various…”
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    Multi-residue method for the detection of veterinary drugs in distillers grains by liquid chromatography–Orbitrap high resolution mass spectrometry by Kaklamanos, George, Vincent, Ursula, von Holst, Christoph

    Published in Journal of Chromatography A (27-12-2013)
    “…•Development of a simple and rapid sample preparation procedure.•Determination of 96 veterinary drugs among multi chemical classes selected.•Thorough method…”
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    Separation and quantification of 15 carotenoids by reversed phase high performance liquid chromatography coupled to diode array detection with isosbestic wavelength approach by Mitrowska, Kamila, Vincent, Ursula, von Holst, Christoph

    Published in Journal of Chromatography A (13-04-2012)
    “…► Experimental design for optimal RP-HPLC method allowing sufficient separation of target analytes. ► Separation and reliable quantification of 15 carotenoids…”
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    Analysis of antimicrobial agents in pig feed by liquid chromatography coupled to orbitrap mass spectrometry by George, Kaklamanos, Vincent, Ursula, von Holst, Christoph

    Published in Journal of Chromatography A (07-06-2013)
    “…•Development of a simple and rapid sample preparation procedure.•Multi chemical classes/groups selected.•Thorough method validation including matrix matched…”
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    Validation of a multi-analyte HPLC method for the determination of carotenoids used as feed additives in fish and poultry feed: results of an interlaboratory study by Vincent, Ursula, Serano, Federica, von Holst, Christoph

    “…The performance characteristics of a multi-analyte method for the determination of all 10 carotenoids authorised as feed additives within the EU were assessed…”
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    DART mass spectrometry: a rapid tool for the identification of feed additives containing coccidiostats as active substances by von Holst, Christoph, Chedin, Mostafa, Kaklamanos, George, Alonso Albarracín, Diego, Vincent, Ursula

    “…Feed additives require pre-market authorisation prior to their use in the EU. For the group of coccidiostats, the EU regulations authorising these products…”
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    Determination of ionophore coccidiostats in feedingstuffs by liquid chromatography-tandem mass spectrometry Part I. Application to targeted feed by VINCENT, Ursula, CHEDIN, Mostafa, YASAR, Sulhattin, VON HOIST, Christoph

    “…A new and fit to purpose multi-analyte method for the determination of six coccidiostats (monensin A, salinomycin, narasin composed of its principal component…”
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    Screening methods and recent developments in the detection of anticoccidials by Huet, Anne-Catherine, Bienenmann-Ploum, Monique, Vincent, Ursula, Delahaut, Philippe

    Published in Analytical and bioanalytical chemistry (01-09-2013)
    “…This article presents a review of the current trends in the analysis of coccidiostats in various matrices, focusing principally on screening and rapid methods…”
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    Analytical strategies for the early quality and safety assurance in the global feed chain. Approaches for nitrogen adulterants in soybean meal and mineral and transformer oils in vegetable oils by Jong, Jacob, de, Lopez Sanchez, Patricia, Mol, Hans

    “…In the past decade, several major food safety crises originated from problems with feed. Consequently, there is an urgent need for early detection of…”
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