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Résultats de la recherche - 241 results
The occurrence of putative cognitive enhancing research peptides in seized pharmaceutical preparations: An incentive for controlling agencies to prepare for future encounters of the kind.
2017 and 2018 two different unknown suspicious preparations were encountered and were subjected to a plethora of different analyses in order to identify, if present, any bioactive compound. It turned out ...
Impact of DNA extraction on whole genome sequencing analysis for characterization and relatedness of Shiga toxin-producing Escherichia coli isolates
study evaluated eight commercial DNA preparation kits for their potential influence on: (i) DNA quality for Nextera XT library preparation; (ii) MiSeq sequencing (data quality, read mapping against ...
Screening strategy targeting the presence of food enzyme-producing fungi in food enzyme preparations
Publication Type: Peer reviewed scientific article Authors: Marie Deckers; Kevin Vanneste; Raf Winand; Marijke Hendrickx; Pierre Becker; Sigrid C.J. De Keersmaecker; Deforce, Dieter; Marie-Alice Fraiture; Nancy Roosens Source: Food Control, Volume 117 (20 ...
Strategy for the identification of micro-organisms producing food and feed products: Bacteria producing food enzymes as study case
amplification and sequencing of the 16S-rRNA gene, the potential presence of FE producing bacteria in FE preparations. First, the specificity was verified using all microbial species reported to produce FE. ...
Dietary exposure of the Belgian population to mineral oil
prepared coffee. This study gives an account of the dietary exposure of the Belgian population to mineral oil for the first time and reports the associated uncertainties. Service: Évaluation des risques et de ...
Analysis of mineral oil in food: An analytical challenge
matrix has also an important impact, not only on data integration and interpretation but also on the sample preparation. Due to the presence of olefins and natural alkanes, some matrices require auxiliary ...
Validation of single particle ICP-MS for routine sizing and quantification of the fraction of silver nanoparticles in E174 food addititves and confectionery products
samples were prepared for analysis according to a slightly modified version of the method of Jensen et al. [2]. The E174 food additives showed a large silver background concentration combined with ...
Estimation of the Uncertainties Related to the Measurement of the Size and Quantities of Individual Silver Nanoparticles in Confectionery.
However, no validations have yet been performed with food additives or real samples containing food additives requiring a sample preparation step prior to analysis. A single-particle inductively coupled ...
A systematic evaluation of Flow Field Flow Fractionation and single-particle ICP-MS to obtain the size distribution of organo-mineral iron oxyhydroxide colloids.
synthetic nano- and submicron FeOx with different mineralogy and coating were prepared and two soil solutions were included. The FlFFF was optimized for Fe recovery, yielding 70-90%. The FlFFF determines ...
Evaluation of a TEM based Approach for Size Measurement of Particulate (Nano)materials.
standard operating procedures for specimen preparation, imaging, and image analysis, and it was evaluated on a series of certified reference materials and representative test materials with varying physical ...