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Sequential separation of anti-diabetic drugs in the presence of melamine as impurity using chromatographic methods
Published 2025-01-01“…In this method, a C18 column was utilized for the separation process. The mobile phase was made up of a mix of methanol and 0.01 M sodium dodecyl sulfate, with a pH of 3.3 achieved by adding orthophosphoric acid. …”
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7305
Determination of Carrageenan in Livestock and Poultry Meat by Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry
Published 2021-01-01“…Chromatographic separation was performed on an ACQUITY UPLC BEH HILIC C18 column (2.1 mm × 50 mm, 1.7 μm) using a gradient elution with methanol and 0.1% (v/v) formic acid in water as a mobile phase. …”
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Phenolic Compounds from Ocimum basilicum Revealed as Antibacterial by Experimental and Computational Screening-Based Studies against Oral Infections
Published 2024-01-01“…Isolation of phenolic compounds 1–4 was carried out by bioactivity guided using column chromatography. Methylparaben (1), methyl protocatechuate (2), caffeic acid (3), and methyl caffeate (4) were characterized by 1D and 2D-NMR. …”
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Determination of Levetiracetam in Human Plasma by Dispersive Liquid-Liquid Microextraction Followed by Gas Chromatography-Mass Spectrometry
Published 2016-01-01“…GC-MS analyses were carried out using a linear temperature program, capillary fused silica column, and helium as the carrier gas. DLLME optimized parameters were type and volume of extraction and dispersing solvents, salt addition, and vortex agitation time. …”
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7313
Antimicrobial Activity of Aspergillus sp. from the Amazon Biome: Isolation of Kojic Acid
Published 2022-01-01“…The extract was subjected to thin layer chromatography (TLC) and fractionated by open and semipreparative column chromatography. The fractions of interest had their chemical constituents elucidated by nuclear magnetic resonance and mass spectrometry. …”
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Adsorption and Desorption Characteristics and Purification of Isoflavones from Crude Soybean Extract Using Macroporous Resins
Published 2022-06-01“…The dynamic adsorption conditions for the purification process of isoflavones on the D101 resin-packed column were selected at the bed volume (BV) of 200 mL, feed volume of 3.75 BV, and flow rate of 1.5 BV/h. …”
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Simultaneous Quantification of Six Bioactive Components in Decoction of Ziziphi spinosae Semen Using Ultrahigh Performance Liquid Chromatography Coupled with Triple-Quadrupole Mass...
Published 2018-01-01“…Analysis was performed on an Agilent ZORBAX Extend-C18 column (2.1 × 100 mm, 1.8 μm) and eluted with a mobile phase system consisting of acetonitrile and water under a gradient program with a flow rate of 0.3 ml/min. …”
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A Sensitive and Selective Method for Determination of Aesculin in Cortex Fraxini by Liquid Chromatography Quadrupole Time-of-Flight Tandem Mass Spectrometry and Application in Phar...
Published 2013-01-01“…Chromatographic separation was performed on a reverse phase column. A tandem mass spectrometric detection with an electrospray ionization (ESI) interface was achieved using collision-induced dissociation (CID) under positive ionization mode. …”
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