Zoekresultaten - 78 results
Rapid Determination of Ethephon in Grapes by Hydrophilic Interaction Chromatography Tandem Mass Spectrometry
liquid chromatography (HILIC) column. This methodology significantly reduces the time of analysis to around 10 min for sample extraction and 10 min for determination. The analytical performance was ...
Characterization of newly isolated lytic bacteriophages active against Acinetobacter baumannii.
broad host range and essential features of potential therapeutic phages, such as short latent period (27 and 21 min, respectively), high burst size (125 and 145, respectively), stability of activity in ...
Foodborne cereulide causes beta-cell dysfunction and apoptosis.
mouse (MIN6) and rat (INS-1E) beta-cell lines, whole mouse islets and control cell lines (HepG2 and COS-1). Beta-cell function was studied by glucose-stimulated insulin secretion (GSIS). Mechanisms of ...
Multi-dye residue analysis of triarylmethane, xanthene, phenothiazine and phenoxazine dyes in fish tissues by ultra-performance liquid chromatography-tandem mass spectrometry.
separated within only 12min on a C18 BEH column using 1mM ammonium acetate in water at pH 4.5 and acetonitrile as mobile phases at a flowrate of 0.4mLmin(-1). The presented method was validated as defined by ...
Development and validation of a fast chromatographic method for screening and quantification of legal and illegal skin whitening agents.
latter having restrictions with respect to concentration and application (kojic acid, arbutin, nicotinamide and salicylic acid), but can also quantify these in a run time of 12 min. The method was ...
Analysis of chlormequat residue in milk by UPLC-MS/MS
recommended in the CEN method prEN15054 has been selected. Isocratic condition (water/acetonitrile/ methanol/acetic acid — 71.25+17.5+7.5+3.75 V+V+V+V 50 mM ammonium acetate are used at a flow of 0.4 ml/min ...
On-line solid-phase extraction with ultra performance liquid chromatography and tandem mass spectrometry for the detection of nicotine, cotinine and trans-3'-hydroxycotinine in urine to strengthen human biomonitoring and smoking cessation studies.
method (10min) was assessed for three concentration levels and were found to be less than 8% for each analyte while the accuracy was between 89 and 113%. To further improve the sensitivity of this approach ...
A multifaceted study of Pseudomonas aeruginosa shutdown by virulent podovirus LUZ19
level, there is a sharp increase in viral mRNAs from 23 to 60% of all transcripts after 5 and 15 min of infection, respectively. Although microarray analysis revealed a complex pattern of bacterial up- and ...
A validated GC-MS method for the determination and quantification of residual solvents in counterfeit tablets and capsules.
USA) with an oven temperature program from 60 °C (held for 5 min) to 270 °C at 25 °C/min. 270 °C is held for 10 min. The total run time is 23.4 min. The obtained method was fully validated by applying ...
Permeability of gloves to selected chemotherapeutic agents after treatment with alcohol or isopropyl alcohol.
triplicate using chromatographic and spectrometric techniques. RESULTS: None of the gloves exhibited permeation exceeding European standard EN 374-3 (1000 ng/cm(2)·min) or American standard ASTM F739-07 (100 ...