Christian Fizet

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A single laboratory validation (SLV) study was conducted for a liquid chromatography (LC) method for the determination of total and all-trans-beta-carotene in a variety of dietary supplements, including multivitamin tablets, softgels, capsules, and beadlet raw materials. Extraction variants were developed for the different types of supplements tested based(More)
Two sensitive and specific methods for quantification of biotin in feed, food, tablets, and premixes based on HPLC-MS/MS have been developed and validated. Depending on sample matrix and biotin content different extraction procedures and HPLC conditions were applied. Key steps in sample preparation were an alkaline extraction or a hydrolysis with sulphuric(More)
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