Results 1 to 10 of about 1,383,122 (318)

Composition and Antioxidant Activity of Essential Oils of H.B.K. grown in Colombia

open access: yesNatural Product Communications, 2008
Microwave-assisted hydrodistillation, simultaneous distillation-solvent extraction, and supercritical fluid extraction, were used to isolate secondary metabolites from two Lippia origanoides chemotypes growing wild in Colombia.
Elena Stashenko   +4 more
doaj   +1 more source

Efficient Sub-1 Minute Analysis of Selected Biomarker Catecholamines by Core-Shell Hydrophilic Interaction Liquid Chromatography (HILIC) with Nanomolar Detection at a Boron-Doped Diamond (BDD) Electrode

open access: yesSeparations, 2021
A rapid, sensitive method for the separation of catecholamine biomarkers (CAs), of importance in traumatic brain injury (TBI) and in Parkinson’s disease (PD), has been successfully developed using hydrophilic interaction liquid chromatography (HILIC ...
Majidah Alsaeedi   +4 more
doaj   +1 more source

Recent Trends in Graphene-Based Sorbents for LC Analysis of Food and Environmental Water Samples

open access: yesMolecules, 2023
This review provides an overview of recent advancements in applying graphene-based materials as sorbents for liquid chromatography (LC) analysis. Graphene-based materials are promising for analytical chemistry, including applications as sorbents in ...
João V. B. Borsatto   +1 more
doaj   +1 more source

A UHPLC–MS/MS Method for Therapeutic Drug Monitoring of Aciclovir and Ganciclovir in Plasma and Dried Plasma Spots

open access: yesBiomedicines, 2021
The role of therapeutic drug monitoring (TDM) of valaciclovir (VA)/aciclovir (A) and valganciclovir/ganciclovir (VG/G) in critically ill patients is still a matter of debate.
Federica Pigliasco   +8 more
doaj   +1 more source

Synthesis, Characterization, and in vitro Experiments of Saturated Cannabinoids on Pancreatic Ductal Adenocarcinoma Cell Lines (HPAF-II, MIA-PaCa2, ASPC-1, and PANC-1)

open access: yesNatural Product Communications
Introduction Cannabinoid receptors CB1 and CB2 are the primary endogenous receptors with which cannabinoids interact, inducing a variety of physiological and psychological effects.
Westley Cruces   +6 more
doaj   +1 more source

Applicability and Limitations of a Capillary-LC Column-Switching System Using Hybrid Graphene-Based Stationary Phases

open access: yesMolecules, 2023
Graphene oxide sheets fixed over silica particles (SiGO) and their modification functionalized with C18 and endcapped (SiGO-C18ec) have been reported as sorbents for extraction and analytical columns in LC.
João Victor Basolli Borsatto   +3 more
doaj   +1 more source

Immobilization of cytochrome P450 enzymes onto magnetic beads: An approach to drug metabolism and biocatalysis

open access: yesTalanta Open, 2023
Cytochrome P450 (CYP, P450) presents a wide range of applicability in drug metabolism studies and in biocatalysis as a great alternative to synthesizing compounds. Nonetheless, their lack of stability is one of their major drawbacks.
Izadora Liranço Furlani   +2 more
doaj   +1 more source

Efficiency of a solvatic sorption model for the prediction of retention times in linear gradient reversed-phase liquid chromatography working with different stationary phases; pp. 37–49 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2016
Currently several different approaches are used for speed-up and cost reduction for new method development in reversed-phase high-performance liquid chromatography.
Svetlana Vorslova   +3 more
doaj   +1 more source

A Novel LC–MS/MS-Based Method for the Diagnosis of ADA2 Deficiency from Dried Plasma Spot

open access: yesMolecules, 2021
Adenosine Deaminase 2 Deficiency (DADA2) (OMIM: 607575) is a monogenic, autoinflammatory disease caused by the loss of functional homozygous or heterozygous mutations in the ADA 2 gene (previously CECR1, Cat Eye Syndrome Chromosome Region 1).
Alessia Cafaro   +9 more
doaj   +1 more source

Combining ion chromatography with mass spectrometry and inductively coupled plasma‐mass spectrometry: Annual review 2020

open access: yesAnalytical Science Advances, 2021
The demand for analyzing low molecular weight polar and ionic components in body fluids, pharmaceutical formulations, food, environmental samples, and drinking water is increasing. Ion chromatography (IC) offers significant advantages over RPLC and HILIC
Cees Bruggink, Detlef Jensen
doaj   +1 more source

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