Zoekresultaten - 9 results

Microbial quality analysis of falsified medicines seized by controling agencies

hygienic standards were used during production of these medicinal products. Startlingly, 2 samples were severely contaminated with a pathogenic microorganism, bearing the required toxin producing genes that ...

Development of strain-level shotgun metagenomics approaches to detect and characterize microbiological contaminants in the context of food safety

chosen for further studies (i.e. 24 hours enrichment as stated in the current international standard procedure, classical commercial DNA extraction and no amplification). Cheese samples were spiked with ...

Chemical and toxciological characterization of e-liquid cigarettes

information on their genotoxicity was present. For four of these flavourings, a commercial standard was available and thus could be tested in vitro using an Ames- and micronucleus test. One of the four ...

DETERMINATION OF SENSITIZING AND IRRITATING LEACHABLES IN MENSTRUAL HYGIENE PRODUCTS

included as internal standard. Validation of the UPLC- TQMS method addressed selectivity, linearity, precision, trueness and accuracy. Out of the 15 investigated MHP s, 6 were found to leak 5 sensitizing and ...

Genotoxic evaluation of the liquids present in electronic cigarettes

2,3-pentanedione). However, for the majority of the compounds, no standard could be obtained and consequently, the Ames test and the in vitro micronucleus test were performed on the e-liquid mixtures. In order to ...

DETERMINATION OF ALLERGENIC FRAGRANCE INGREDIENTS IN FEMININE ABSORBENT HYGIENE PRODUCTS AND LUBRICANTS

FID- MS was used to determine fragrances in lubricants using standard addition to correct for matrix effects. The established HS- GC- FID- MS method was optimized and validated. The observed ...

Study of the possible migration risks of food contact materials for children under 3 years

dichloromethane (DCM)-n-hexane (1:1 and 1:3). The extracts resulting from the LLE step were analysed on GC-(EI) MS by monitoring specific ions for each analyte and for the internal standard. EtOAc-n-hexane (1:1) ...

Detection and risk evaluation of counterfeit medicines based on physico-chemical properties: the fingerprint and chemometrics approach

fingerprinting has been shown to be useful to screen herbal preparations for the presence of forbidden or regulated plants. The disadvantage of this approach is that a reference standard of the targeted plants ...

Determination of lawasone and paraphenylenediamine in henna tattoos and hair dyes through UPLC-PDA

Publication Type: Dissertation Authors: Tasnim Mouazen; Tamara Vanhaecke; Bart Desmedt Source: (0) Keywords: Henna lawsone PPD standard addition standard calibration UPLC-PDA Youden calibration ...

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