dispersive liquid-liquid microextraction method (dllme) combined with high-performance liquid chromatography-ultraviolet detection (hplc-uv) was used to determine thiamine (b1), nicotinamide (b3) and pyridoxine (b6) in sour cherry juice. this method was rapid, simple and sensitive. separation was accomplished using a c18 column. the optimum chromatographic conditions were found to be: mobile ph...

Determination of duloxetine by various methods from various matrices is reviewed in this paper. The methods used consist of spectrofluorimetry, ultraviolet (UV) spectroscopy, thin layer chromatography (TLC), and high-performance liquid chromatography (HPLC). These methods were used to determine the amount of duloxetine in bulk drugs, pharmaceutical dosage forms and biological matrix. HPLC with ...

high-performance liquid chromatography (hplc) methods employing ultraviolet (uv) detector are not sufficiently sensitive to measure the low plasma concentrations following single oral dose of imipramine. therefore, in the present study a simple, rapid and yet sensitive hplc method with uv detection was developed and validated for quantitation of imipramine in human plasma samples. an efficient ...

Determination of sildenafil by various methods and in various media is reviewed in this paper. The methods used consist of ultraviolet (UV) spectroscopy, thin layer chromatography (TLC), and high-performance liquid chromatography (HPLC). These methods were used to determine the amount of sildenafil in pharmaceutical preparations, soft drinks, and biological liquids. HPLC was used for evaluation...

Submit Manuscript | http://medcraveonline.com HPLC-UV: High Performance Liquid Chromatography And Ultravioleta Detector; HPLC-DAD: High Performance Liquid Chromatography and Diode Array Detector; NCB: Blank Nanocapsules; NCLS: Nanocapsules Containing Essential Oil of L. Sidoides; ODS: Octadecylsilyl Groups; OELS: Essential Oil of Lippia Sidoides; PLGA: Poly D, L-Lactide-Co-Glycolyde; PTFE: Poly...

apigenin is best known as an irreversible inhibitor of monoamine oxidase (mao), an intracellular enzyme associated with the outer membrane of mitochondria. the purpose of this study is to establish a reliable and quick method for the assignment of apigenin in cosmos bipinnatus, apium graveolens and petroselinum crispum by high performance liquid chromatography with ultraviolet detection (hplc-u...

A newly developed single quad mass spectrometry (MS) detector was coupled to a ultra-high performance liquid chromatography (UPLC) system and implemented in the routine quality control (QC) and impurity analysis of four therapeutic peptides, namely bleomycin sulfate, tyrothricin, vancomycin HCl and bacitracin, which were selected given their multi-component drug nature and their closely structu...

tolterodine tartrate, is a new, potent and competitive muscarinic receptor antagonist in clinical development for the treatment of urge incontinence and other symptoms of unstable bladder. the purpose of this study is to establish a reliable and quick method for the assignment of tolterodine tartrate by high performance liquid chromatography with ultraviolet detection (hplc-uv). a rapid and sen...

Apigenin is best known as an irreversible inhibitor of monoamine oxidase (MAO), an intracellular enzyme associated with the outer membrane of mitochondria. The purpose of this study is to establish a reliable and quick method for the assignment of Apigenin in Cosmos bipinnatus, Apium graveolens and Petroselinum crispum by high performance liquid chromatography with ultraviolet detection (HPLC-U...

In the present study, various mixtures of aqueous ethanol and acetone solutions were utilized to extract anthocyanins from eggplant peel by a discontinuous process to obtain a natural red-purple colorant. First, the most appropriate combination for extraction solvent was selected as ethanol 70 wt in water acidified with acetic acid 3 wt, which was determined by analysis of extraction yields and...