Search Results - "De Beer, J O"
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A validated GC–MS method for the determination and quantification of residual solvents in counterfeit tablets and capsules
Published in Journal of pharmaceutical and biomedical analysis (01-11-2012)“…► A fast headspace-GC–MS method was developed for residual solvent analysis. ► The quantitative analysis was validated for 10 solvents applying the total error…”
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Optimization and validation of a micellar electrokinetic chromatographic method for the analysis of several angiotensin-II-receptor antagonists
Published in Journal of Chromatography A (10-01-2003)“…We have optimized a micellar electrokinetic capillary chromatographic method for the separation of six angiotensin-II-receptor antagonists (ARA-IIs):…”
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Chemometrics and chromatographic fingerprints to discriminate and classify counterfeit medicines containing PDE-5 inhibitors
Published in Talanta (Oxford) (15-10-2012)“…Chromatographic fingerprints recorded for a set of genuine and counterfeit samples of Viagra® and Cialis® were evaluated for their use in the detection and…”
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A validated Ultra High Pressure Liquid Chromatographic method for the characterisation of confiscated illegal slimming products containing anorexics
Published in Journal of pharmaceutical and biomedical analysis (05-02-2012)“…► We developed an UHPLC method for molecules present in illegal slimming products. ► The method was validated for quantification following ISO17025. ►…”
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Overview of skin whitening agents with an insight into the illegal cosmetic market in Europe
Published in Journal of the European Academy of Dermatology and Venereology (01-06-2016)“…Lightening skin tone is an ancient and well‐documented practice, and remains common practice among many cultures. Whitening agents such as corticosteroids,…”
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Measurement uncertainty from validation and duplicate analysis results in HPLC analysis of multivitamin preparations and nutrients with different galenic forms
Published in Journal of pharmaceutical and biomedical analysis (08-08-2003)“…An approach to calculate the measurement uncertainty in the HPLC analysis of several hydro- and liposoluble vitamins in multivitamin preparations with…”
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ATR-FTIR spectroscopy and chemometrics: An interesting tool to discriminate and characterize counterfeit medicines
Published in Journal of pharmaceutical and biomedical analysis (10-08-2015)“…•ATR-FTIR might be useful for an initial screening of counterfeit medicines.•ATR-FTIR fingerprints were used to discriminate between genuine and counterfeit…”
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Detection of sibutramine in adulterated dietary supplements using attenuated total reflectance-infrared spectroscopy
Published in Journal of pharmaceutical and biomedical analysis (01-11-2014)“…•ATR-IR spectra were recorded for 125 dietary supplements suspected of containing sibutramine.•ATR-IR spectra were related to the presence of sibutramine using…”
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Headspace–gas chromatographic fingerprints to discriminate and classify counterfeit medicines
Published in Talanta (Oxford) (01-06-2014)“…Counterfeit medicines are a global threat to public health. These pharmaceuticals are not subjected to quality control and therefore their safety, quality and…”
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HS–GC–MS method for the analysis of fragrance allergens in complex cosmetic matrices
Published in Talanta (Oxford) (01-01-2015)“…Potential allergenic fragrances are part of the Cosmetic Regulation with labelling and concentration restrictions. This means that they have to be declared on…”
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Development and validation of a fast chromatographic method for screening and quantification of legal and illegal skin whitening agents
Published in Journal of pharmaceutical and biomedical analysis (01-09-2013)“…•New UHPLC-DAD method capable of analyzing illegal skin whitening cosmetics.•Detection of legal and illegal skin whitening agents.•The method is validated for…”
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Characterization of suspected illegal skin whitening cosmetics
Published in Journal of pharmaceutical and biomedical analysis (01-03-2014)“…•UHPLC–ToF–MS method for screening of suspected skin whitening cosmetics.•Validation for multiple matrices.•Detection and quantification of skin whitening…”
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Development of a Stationary Phase Optimised Selectivity Liquid Chromatography based screening method for adulterations of food supplements for the treatment of pain
Published in Talanta (Oxford) (01-06-2015)“…Illegally adulterated dietary supplements are an increasing problem worldwide. One of the important groups of often adulterated products are the dietary…”
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Chromatographic impurity fingerprinting of genuine and counterfeit Cialis® as a means to compare the discriminating ability of PDA and MS detection
Published in Talanta (Oxford) (01-01-2016)“…Public health is threatened worldwide by counterfeit medicines. Their quality, safety and efficacy cannot be guaranteed since no quality control is performed…”
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Detection of whitening agents in illegal cosmetics using attenuated total reflectance-infrared spectroscopy
Published in Journal of pharmaceutical and biomedical analysis (01-09-2014)“…•ATR-IR spectra were recorded for 150 suspicious cosmetic products.•ATR-IR spectra were related to illegal whitening agents present using chemometrics.•a k-NN…”
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A strategy for the identification of plants in illegal pharmaceutical preparations and food supplements using chromatographic fingerprints
Published in Analytical and bioanalytical chemistry (01-03-2013)“…The detection of regulated and forbidden herbs in pharmaceutical preparations and nutritional supplements is a growing problem for laboratories charged with…”
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Evaluation of the residual solvent content of counterfeit tablets and capsules
Published in Journal of pharmaceutical and biomedical analysis (01-07-2013)“…•Counterfeit tablets and capsules were screened for residual solvents.•Detected solvents were quantified.•Counterfeit tablets and capsules have significantly…”
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Illegal cosmetics on the EU market: a threat for human health?
Published in Archives of toxicology (01-09-2014)Get full text
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Comparative dissolution study on counterfeit medicines of PDE-5 inhibitors
Published in Journal of pharmaceutical analysis (01-08-2014)“…Counterfeit medicines are a growing problem in both developing and industrialised countries. In general the evaluation of these medicines is limited to the…”
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Optimization of an antibiotic residue screening test, based on inhibition of Bacillus subtilis BGA, with experimental design
Published in Food additives and contaminants (01-07-1998)“…Experimental design was applied to an agar-diffusion inhibition test for the screening of residues of veterinary antimicrobial drugs in slaughter animals. The…”
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