Abstract：
:Sibutramine is one of the most occurring adulterants encountered in dietary supplements with slimming as indication. These adulterated dietary supplements often contain a herbal matrix. When customs intercept these kind of supplements it is almost impossible to discriminate between the legal products and the adulterated ones, due to misleading packaging. Therefore in most cases these products are confiscated and send to laboratories for analysis. This results inherently in the confiscation of legal, non-adulterated products. Therefore there is a need for easy to use equipment and techniques to perform an initial screening of samples. Attenuated total reflectance-infrared (ATR-IR) spectroscopy was evaluated for the detection of sibutramine in adulterated dietary supplements. Data interpretation was performed using different basic chemometric techniques. It was found that the use of ATR-IR combined with the k-Nearest Neighbours (k-NN) was able to detect all adulterated dietary supplements in an external test set and this with a minimum of false positive results. This means that a small amount of legal products will still be confiscated and analyzed in a laboratory to be found negative, but no adulterated samples will pass the initial ATR-IR screening.
journal_name
J Pharm Biomed Analjournal_title
Journal of pharmaceutical and biomedical analysisauthors
Deconinck E,Cauwenbergh T,Bothy JL,Custers D,Courselle P,De Beer JOdoi
10.1016/j.jpba.2014.08.009subject
Has Abstractpub_date
2014-11-01 00:00:00pages
279-283eissn
0731-7085issn
1873-264Xpii
S0731-7085(14)00381-1journal_volume
100pub_type
杂志文章abstract：:A systematic method in hydrophilic interaction chromatography (HILIC) was developed for the separation of four monophosphate nucleotides using design of experiment (DOE) approaches. Three HPLC parameters, the buffer concentration (ammonium acetate concentration), gradient time, and temperature, were evaluated within t...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2018.05.014
更新日期：2018-09-05 00:00:00
abstract：:As the global market for pharmaceuticals increases, the adverse consequences of different regulations and requirements are becoming more obvious. Discussions between the regulatory authorities for the European Community, United States and Japan under the International Conference on Harmonization (ICH) intended to remo...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(95)01578-7
更新日期：1995-12-01 00:00:00
abstract：:In this work, a new solid phase spectrophotometric method in association with flow injection analysis for Vitamin B6 (pyridoxine) determination has been developed with direct measurement of light-absorption in C18 material. In the developed method, successive passage of the complex, previously formed in the flowing st...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(03)00589-2
更新日期：2004-02-18 00:00:00
abstract：:A photodegradation study of aztreonam solutions exposed to UV irradiation showed that the major product of degradation was the anti-isomer together with some unidentified products. This result was similar to that obtained with cefotaxime and it is postulated that this would be generally true of compounds containing an...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(92)80092-2
更新日期：1992-09-01 00:00:00
abstract：:Column-switching high-performance liquid chromatographic (HPLC) method has been developed and validated for quantification of losartan, telmisartan, and valsartan in human urine. Urine samples were diluted on the extraction mobile phase (1:4, v/v) and a volume of 20 microL of this mixture were directly injected onto t...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2009.04.015
更新日期：2009-09-08 00:00:00
abstract：:Kumariasava is a marketed ayurvedic formulation containing Aloe vera as one of the main ingredients. Present study aims to standardize Kumariasava based upon chromatographic and spectral studies. Various extracts of Kumariasava have been prepared and evaluated. Chloroform extract indicated presence of three well-resol...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2004.11.044
更新日期：2005-04-29 00:00:00
abstract：:The shelf-life of a drug is usually determined by fitting the assayed values of drug potency versus time to a linear least-squares model. In least-squares models, the parameters are estimated by minimizing the sum of squares of the residuals. Shelf-life is estimated as the time corresponding to the intersection point ...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(93)80078-f
更新日期：1993-09-01 00:00:00
abstract：:Mobile phase optimization and reversed-phase column characteristics were used to separate photodegradation products from the parent compound, 24-cyclopropyl-9-,10-secochola-5,7,10(19),22-tetraene-1alpha,3beta,24-triol (calcipotriol). Separation between calcipotriol and its degradation products was obtained with an ace...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(01)00390-9
更新日期：2001-08-01 00:00:00
abstract：:A novel stability-indicating reversed phase high performance liquid chromatographic (RP-HPLC) method for the simultaneous assay of betamethasone-17-valerate, fusidic acid and potassium sorbate as well as methyl- and propylparaben in a topical cream preparation has been developed. A 100mm×3.0mm ID. Ascentis Express C18...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2014.03.005
更新日期：2014-08-05 00:00:00
abstract：:A simple, rapid and sensitive method termed as dispersive liquid-liquid microextraction (DLLME) combined with high-performance liquid chromatography-ultraviolet detector (HPLC-UV) has been proposed for the determination of three psychotropic drugs (amitryptiline, clomipramine and thioridazine) in urine samples. The de...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2008.11.036
更新日期：2009-02-20 00:00:00
abstract：:The classification of an impurity of a drug substance as genotoxic means that the "threshold of toxicological concern" (TTC) value of 1.5 μg/day intake, considered to be associated with an acceptable risk, should be the admissible limit in the raw material and that leads to new analytical challenges. In this study, re...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2011.12.014
更新日期：2012-03-05 00:00:00
abstract：:A method is described for analysis of the tetracycline antibiotic minocycline using capillary zone electrophoresis. Potential impurities are 4-epiminocycline, 6-deoxy-6-demethyltetracycline, 7-didemethylminocycline, 7-monodemethylminocycline and 9-minocycline. Method development was undertaken with a mixture consistin...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(96)01732-3
更新日期：1996-06-01 00:00:00
abstract：:Recombinant DNA technology has made possible the large-scale production of proteins for pharmaceutical applications. As a result, there has been a renaissance in methodology which can provide information on the structural stability and character of these materials. Circular dichroism (CD) spectroscopy, with its sensit...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章,评审
doi：10.1016/0731-7085(89)80049-4
更新日期：1989-01-01 00:00:00
abstract：:Standards are required in quantitative NMR (qNMR) to obtain accurate and precise results. In this study acetanilide was established and used as a primary standard. Six other chemicals were selected as secondary standards: 3,4,5-trichloropyridine, dimethylterephthalate, maleic acid, 3-sulfolene, 1,4-bis(trimethylsilyl)...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2013.09.010
更新日期：2014-05-01 00:00:00
abstract：:A validated stability indicating RP-HPLC assay of doxofylline was developed by separating its related substances and degradants on LichrocartC18 (250 mm × 4.6 mm; 5 μm) column using 10 mM ammonium acetate and acetonitrile as a mobile phase in a gradient mode of elution at a flow rate of 1.0 mL/min at 30 °C. The column...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2013.02.004
更新日期：2013-05-05 00:00:00
abstract：:Doxorubicin is one of the most potent anti-tumor agents generally used in the treatment of bone cancer. A simple and sensitive HPLC method was developed and validated for the assay of doxorubicin. The method used a C18 Luna microbore column (50 x 1 mm) with a fluorescent detector (505 nm Ex. and 550 nm Em.). The mobil...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(99)00070-9
更新日期：1999-07-01 00:00:00
abstract：:The use of Near-infrared spectroscopy (NIRS) as a fast and non-destructive technique was employed for moisture content (MC) determination in Antibody-drug conjugates (ADCs) in replacement to Karl Fischer (KF) method. The lab analysis of ADCs, high potent medicines, should be performed in conditions ensuring the operat...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2016.09.014
更新日期：2016-11-30 00:00:00
abstract：:A comprehensive review with 276 references for the analysis of members of an important class of drugs, cephalosporin antibiotics, is presented. The review covers most of the methods described for the analysis of these drugs in pure forms, in different pharmaceutical dosage forms and in biological fluids. ...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章,评审
doi：10.1016/j.jpba.2007.06.002
更新日期：2007-09-21 00:00:00
abstract：:An NMR model for the study of drug interactions with solid tumour is described. It is based on the use of packed cells in a simple medium. The system is capable of dealing with cellular biochemistry at a molecular level through experiments conducted in a homogeneous field by 1H spin-echo NMR spectroscopy. However, thr...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(90)80110-b
更新日期：1990-01-01 00:00:00
abstract：:Thermodegradation of labile compounds in the hot injection port of a gas chromatograph causes many problems and can lead to ambiguous, poorly reproducible results. Splitless injection used in trace analysis in order to achieve a lower detection limit may even enhance the difficulties due to the longer residence time o...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(95)01307-7
更新日期：1995-04-01 00:00:00
abstract：:An on-line liquid chromatography-immunochemical detection (LC-ICD) system for the quantification of cytokines in cell extracts has been developed using a post-column continuous-flow reaction detection system using fluorescence labelled antibodies. Cytokines eluting from the micro-HPLC column react with antibodies to f...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(01)00464-2
更新日期：2001-12-01 00:00:00
abstract：:A rapid and efficient micellar electrokinetic capillary chromatography (MEKC) method was developed to analyze edgeworoside C (1), kaempferol-3-O-beta-D-glucoside (2) and rutin (3) in the alabastrum of Edgeworthia chrysantha Lindl. for the first time. The factors that affect the separation were studied, such as the con...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2005.09.001
更新日期：2006-03-18 00:00:00
abstract：:A selective and sensitive method utilizing gas chromatography-mass spectrometry was developed for simultaneous determination of cinnamaldehyde, cinnamyl alcohol, and methyl cinnamate in rat plasma. Cinnamaldehyde and cinnamyl alcohol can inter-convert to one another in rats, thus simultaneous quantifying both analytes...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2013.10.044
更新日期：2014-02-01 00:00:00
abstract：:TopCount, a microplate scintillation counter (MSC), has been recently employed as an off-line liquid radiochromatographic detector for radioactive metabolite profile analysis. The present study was undertaken to validate TopCount for metabolite profiling with respect to sensitivity, accuracy, precision and radioactivi...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2005.03.012
更新日期：2005-09-01 00:00:00
abstract：:Chronic kidney disease (CKD) is a progressive pathological condition in which renal function deteriorates in time. The first diagnosis of CKD is often carried out in general care attention by general practitioners by means of serum creatinine (CNN) levels. However, it lacks sensitivity and thus, there is a need for ne...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2017.10.036
更新日期：2018-02-05 00:00:00
abstract：:A sensitive and reproducible method for the routine mapping of oligosaccharides in a humanised immunoglobulin (IgG) is described. The method involves the enzymic release of intact glycans using the endoglycosidase glycopeptidase-F, and subsequent derivatisation with 1-phenyl-3-methyl-5-pyrazolone to facilitate analysi...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(95)01646-5
更新日期：1996-03-01 00:00:00
abstract：:A simple and rapid method was developed for measuring 10 organophosphorus pesticides (acephate, methidathion, dichlorvos, fenthion, EPN, diazinon, phenthoate, malathion, fenitrothion, and cyanophos) in the serum of acute poisoning patients by LC/MS. Following deproteinization by acetonitrile, an aliquot of the biologi...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2007.01.036
更新日期：2007-05-09 00:00:00
abstract：:Nitrofurnation is an antibacterial drug. It is used in the treatment of initial or recurrent urinary tract infections caused by susceptible organisms. The cyclic voltammogram of the drug in Britton-Robinson buffers (pH 2-11) exhibited a single well-defined cathodic peak at the hanging mercury drop electrode, that due ...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(02)00344-8
更新日期：2002-10-15 00:00:00
abstract：:A specific, and automated method was developed to quantitate neomycin in human serum. Samples were prepared with an automated solid phase extraction (SPE). The hydrophilic interaction chromatography (HILIC) was used for additional sample cleanup and baseline separation. The analyte neomycin was detected with electrosp...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2004.01.018
更新日期：2004-05-28 00:00:00
abstract：:A method for the separation of a mixture of terbutaline and non-steroidal anti-inflammatory drugs was developed using capillary electrophoresis with a new hemispherodextrin, ad hoc designed, the lysine - bridged hemispherodextrin (THLYSH). The use of lysine residues to bridge the trehalose capping unit moiety to the c...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2017.07.041
更新日期：2017-10-25 00:00:00
