HPLC determination
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This study aimed to validate a procedure for the quantification of verbascoside in the root of Rehmannia glutinosa varieties 19 by high performance liquid chromatography (HPLC) to serve the assessment of medicinal quality.
8p vibego 02-02-2024 1 0 Download
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This study aimed to develop and validate an HPLC-PDA method for simultaneous quantification of three compounds: Nicotinamide mononucleotide (NMN), nicotinic acid, and niacinamide in dietary supplements.
12p vigojek 02-02-2024 4 1 Download
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The objective of this study was to develop a method for the simultaneous determination of bixin and norbixin in different food samples using high performance liquid chromatography (HPLC-PDA).
12p vigojek 02-02-2024 6 1 Download
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The use of dietary supplements containing lactoferrin is a growing trend. As a result, there is a need for a simple and reliable analytical method to determine the content of lactoferrin in these supplements to ensure food quality. In this study, an HPLC method was developed and validated for determining lactoferrin in dietary supplements using a HiTrap Heparin clean-up column in combination with HPLC.
15p vigojek 02-02-2024 7 1 Download
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A high-performance liquid chromatography method with a photodiode array detector (HPLC-PDA) was developed for the simultaneous determination of Capsanthin and Capsorubin in food. These are the two main carotenoids responsible for the red color found in Capsicum annuum and lily (Lilium).
13p vigojek 02-02-2024 5 1 Download
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Bacterial strain LB7 isolated from pickled melon solution was identified as Lactobacillus plantarum using molecular marker 16S rRNA gene (rDNA) sequences. The content of lactic acid in the isolate culture was relatively high (33.7 g/l) when quantified using HPLC system.
7p vimarillynhewson 02-01-2024 2 0 Download
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In this study, a simple, selective, and accurate analysis method was developed for the simultaneous determination of anti-inflammatory drugs (paracetamol and diclofenac) existing inlet and outlet of the wastewater treatment system. This method used solid-phase extraction (SPE) and reversed-phase high-performance liquid chromatography with a photodiode array detector (HPLC-PDA).
10p vialfrednobel 21-12-2023 4 2 Download
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A combination of three active ingredients amlodipine besylate, telmisartan and hydrochlorothiazide has been used and proven effective in the treatment of hypertension in patients with moderate to severe hypertension, while it contributes to a reduction in product costs and increases patient compliance.
8p vikissinger 21-12-2023 5 2 Download
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The study "Quantification of vildagliptin in tablets using high liquid-performance chromatography" aimed to establish a fast, simple and economical determination procedure for vildagliptin content in tablets by reverse phase high-performance liquid chromatography (Rp-HPLC). Research method: Chromatographic conditions affecting vildagliptin analysis, such as solvent system, sample processing and optimization of chromatographic conditions, and mobile phase ratio... were investigated.
8p giangnhanly 02-10-2023 7 2 Download
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Proximate and amino acid composition of wild and cultivated edible mushrooms collected from Ethiopia
The aim of the present study was to determine the proximate composition of wild and cultivated edible mushrooms of Ethiopia collected from Kaffa, Asosa and Addis Ababa. Further to measure the quality of the crude protein their amino acid composition was analyzing by using the convenient RP-HPLC-Uv/Vis detection.
8p viisac 23-09-2023 4 1 Download
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Fresh meat preparations, as fresh sausages, hamburger, minced meats etc, are susceptible to rapid oxidation and the consequent browning of meat red color compromises the product attractiveness. As a result for the producers, there is the drastic reduction of products shelf-life. In order to remedy such economic loss, the addition of some substances with antioxidant effect may represent a valid solution.
6p viisac 23-09-2023 3 1 Download
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Based on the need of a simple and low-cost method for determination of DEX-HBr as alternative to conventional HPLC, the purpose of this study is to employ a purpose-made CE instrument with capacitively coupled contactless conductivity detection (C4D) as a simple and cost-effective approach for determination of DEX-HBr.
6p vidoctorstrange 06-05-2023 6 2 Download
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In this research, we proposed a new, low cost, high sensitivity and selectivity analytical method for the determination of diquat in the plasma samples applying the HPLC-UV method. The method developed was applied at Posion Control Centre, Bachmai Hospital for diagnosis of diquat acute-poisoning from DQintoxicated patients.
5p vilucius 03-03-2023 9 2 Download
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In this work, a chemometric approach to positive electrospray ionization (ESI) optimization for the simultaneous determination of the cyromazine, carbendazim, methomyl, imidacloprid, and thiophanate methyl in vegetable samples by liquid chromatography- mass spectrometry (LC-MS) has been developed.
6p vicedric 08-02-2023 2 1 Download
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A high-performance liquid chromatography-fluorescence detection (HPLC-FLD) method for determination of the fluoroquinolones norfloxacin (NOR), ciprofloxacin (CIP), levofloxacin (LEVO), and moxifloxacin (MOXI) in human plasma has been successfully developed. The detection was optimized with a dual wavelength excitation and emission fluorescence detector.
5p vicedric 08-02-2023 3 1 Download
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This study aimed to analyze diclofenac sodium (DS) in human plasma samples using ultrafiltration-based sample preparation before high-performance liquid chromatography (HPLC) analysis. The advantages and limitations of ultrafiltration-based sample preparation in bioanalysis were evaluated by comparing the results with conventional methods. The precipitating agent was used before ultrafiltration.
9p lyhuyenthu 31-01-2023 6 2 Download
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In this study, antimicrobial nanofibers were produced with the mixtures of polyvinyl alcohol (PVA) and cyclotide-rich fractions by electrospinning method. After extraction, the first separation was carried out with C18 flash chromatography and then fractioned into five separate parts by reversed-phase high-pressure liquid chromatography (RP-HPLC). The molecular weights of cyclotides in each fraction were determined by quadrupole time-of-flight liquid chromatography-mass spectrometry (Q-TOF LC-MS).
10p lyhuyenthu 31-01-2023 5 1 Download
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Ketoprofen (KET) is an active pharmaceutical compound that has pain relieving and antipyretic effects. Its determination in body fluids and environmental waters is important due to widespread use of the compound. In this study, a selective and reliable method has been developed for the determination of ketoprofen in water and artificial serum using molecularly imprinted polymers (MIPs) as a solid phase extraction sorbent prior to HPLC-DAD detection.
14p lyhuyenthu 31-01-2023 6 1 Download
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The aim of this study was the determination of chromatographic profiles of major whey proteins (WP): α-lactalbumin (α-La), β-lactoglobulin A and B, (β-Lg A and B), bovine serum albumin (BSA) in dairy beverages based on Zonar milk serum. The studied WP were separated by high-performance liquid chromatography (HPLC) on Aeris XB-C18 column using gradient elution with 0.1% trifluoroacetic acid (TFA) in water and 0.1% TFA in 80% acetonitrile, at 214 nm detection.
11p lyhuyenthu 31-01-2023 2 2 Download
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Additives are added to polymers in small concentration to achieve desired application properties widely used to tailor the properties. The rapid diversification of their molecular structures, with often only minute differences, necessitates the development of adequate chromatographic techniques.
8p viginny 23-12-2022 5 3 Download