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Synthesis and Characterization of MIP Ghost Approach for Selective Extraction of Empagliflozin and Quantification by Liquid Chromatography.
J Chromatogr Sci
January 2025
Department of Chemistry & Biochemistry, Ohio University, Athens, OH, USA.
The valid method was developed for analyzing empagliflozin in serum/plasma/urine using a molecularly imprinted ghost polymer-solid-phase extraction approach (MISPE) with liquid chromatographic methodology. Methacrylic acid (MAA) was used as the monomer, 2,2 azobis isobutyronitrile as the initiator and ethylene glycol dimethacrylate as the cross-linker in the free radical polymerization procedure. Empagliflozin was loaded onto the polymer and eluted with 1 mL of a 9:1 MeOH:acetic acid solution.
View Article and Find Full Text PDFA Solvatochromic and Photosensitized Lipid Droplet Probe Detects Local Polarity Heterogeneity and Labels Interacting Proteins in Human Liver Disease Tissue.
Adv Healthc Mater
January 2025
The Second Hospital of Dalian Medical University, Dalian, 116023, China.
The intricate morphology, physicochemical properties, and interacting proteins of lipid droplets (LDs) are associated with cell metabolism and related diseases. To uncover these layers of information, a solvatochromic and photosensitized LDs-targeted probe based on the furan-based D-D-π-A scaffold is developed to offer the following integrated functions. First, the turn-on fluorescence of the probe upon selectively binding to LDs allows for direct visualization of their location and morphology.
View Article and Find Full Text PDFSequential separation of anti-diabetic drugs in the presence of melamine as impurity using chromatographic methods.
BMC Chem
January 2025
Pharmaceutical Chemistry Department, Faculty of Pharmacy, Nahda University, Sharq El-Nile, Beni-Suef, 62511, Egypt.
The study of green analytical chemistry has garnered significant attention in the context of mitigating global environmental contamination. In this study, we present two methodologies for environmentally friendly chromatography that enable simultaneous and specific determination of Saxagliptin (SAX), metformin (MET), and a pharmacopoeial impurity of MET known as melamine (MEL). The initial method employed in this study is High-Performance Thin Layer Chromatography (HPTLC), which utilized 60 F 254 silica gel-coated Mark HPTLC plates on aluminum sheets as the stationary phase.
View Article and Find Full Text PDFQuantification of micro- and nano-plastics in atmospheric fine particles by pyrolysis-gas chromatography-mass spectrometry with chromatographic peak reconstruction.
J Hazard Mater
January 2025
State Key Laboratory of Advanced Environmental Technology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou 510640, China.
The effects of micro- and nano-plastics (MNPs) on human health are of global concern because MNPs are ubiquitous, persistent, and potentially toxic, particularly when bound to atmospheric fine particles (PM). Traditional quantitative analysis of MNPs by pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS) is often inaccurate because of false positive signals caused by similar polymers and organic compounds. In this study, a reliable analytical strategy combining HNO digestion and chromatographic peak reconstruction was developed to improve the precision of pyrolysis-gas chromatography-mass spectrometry analysis of multiple MNPs bound to PM.
View Article and Find Full Text PDFQualitative and Comparative Study of APORT Apple Peel Based on UPLC-Q-TOF-MS Technology and Fruit Peel Comparison of Different Provenances.
Phytochem Anal
January 2025
School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China.
Objective: This study aimed to qualitatively study the main chemical components of apple peel in APORT, Kazakhstan, by ultra-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry (UPLC-Q-TOF-MS/MS) and to compare the components of apple peels with different provenances.
Methods: An ACQUITY UPLC HSS T3 (100 mm × 2.1 mm, 1.
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