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Showing 1 to 7 of 7 for “"Reversed phase high-performance liquid chromatography (HPLC)"”.
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ΑΠΟΜΟΝΩΣΗ ΚΑΙ ΑΝΑΛΥΣΗ ΚΑΡΟΤΕΝΟΕΙΔΩΝ ΤΟΥ ΦΟΙΝΙΚΕΛΑΙΟΥ ΜΕ ΥΓΡΗ ΧΡΩΜΑΤΟΓΡΑΦΙΑ
… THE PROPOSED METHOD IS BASED ON THE PREPARATIVE LIQUID CHROMATOGRAPHY. THE EFFECT OF THE FEED THROUGHPUT, THE DIAMETER OF THE COLUMN, THE SOLVENT FLOW AS WELL AS THE RECYCLING OF COLLECTED FRACTIONS ARE STUDIED IN ORDER TO GIVE USEFUL HINTS FOR THE SCALE-UP OF THE METHOD. A NEW ANALYTICAL METHOD …
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Identification and activity assessment of a bioactive peptide QUB-1368 from the skin secretion of the American bullfrog (Rana catesbeiana)
… QUB-1368 was then obtained in quantity by solid-phase peptide synthesis for biological activity experiments. The purified synthetic peptide QUB-1368 was identified by reversed-phase high-performance liquid chromatography (HPLC) and Matrix-Assisted Laser Desorption/ Ionization Time of Flight Mass …
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The ring-opening polymerization of cyclosiloxanes in the presence of bis ([alpha], [omega]-aminopropyl)-1,3-tetramethyldisiloxane
… catalysts has been investigated. The use of reversed-phase high performance liquid chromatography (HPLC) and capillary gas chromatography (GC) allowed the disappearance of the starting materials to be monitored as a function of reaction temperature, time, targeted molecular weight, catalyst …
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Phytochemical and Antimicrobial Studies on Selected Medicinal Plants from The Iraqi Flora: Citrus grandis, Citrus sinensis and Ruta chalepensis
… using a combination of thin layer chromatography (TLC), solid-phase extraction and reversed-phase high-performance liquid chromatography (HPLC). 1D and 2D nuclear magnetic resonance (NMR) and mass spectrometric techniques were employed to identify and confirm the structures of the …
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Phenolic composition and antioxidant activity of sweetpotatoes [Ipomoea batatas (L.) Lam]
… Individual phenolic acids were quantified by reversed-phase high performance liquid chromatography (HPLC) and the best separation was achieved using a 5-µm, 4.6 × 250 mm column with a mobile phase of 1% (v/v) formic acid aqueous solution: acetonitrile: 2-propanol (70:22:8), pH 2.5. Methanol …
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The Development of Analytical Procedures for Analysis of Trace Metals in Pharmaceutical Formulations and the Speciation of Arsenic in Antacids
… a speciation method using an ion-pair reversed phase high performance liquid chromatography (HPLC)-ICP-MS was optimised and validated according to ICH Q2B guidelines as no information regarding what species are present in such products is available in the literature. Four arsenic …
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An investigation into the use of B-cyclodextrins as additives to effect enantiomeric separation by reversed phase HPLC.
… The ability of B-cyclodextrin (CD) as mobile phase additive in reversed phase HPLC to bring about chiral discrimination using acetonitrile/phosphate buffer and an octadecylsilica stationary phase has been investigated with methylphenobarbitone, ibuprofen, hexobarbitone and mandelic acid as …