Results 11 to 20 of about 11,846 (190)

Low-Field Benchtop NMR Spectroscopy for Quantification of Aldehydic Lipid Oxidation Products in Culinary Oils during Shallow Frying Episodes [PDF]

open access: yesFoods, 2023
Introduction: Toxic aldehydic lipid oxidation products (LOPs) arise from the thermo-oxidative deterioration of unsaturated fatty acids present in heated culinary oils when exposed to high-temperature frying episodes, and currently these effects represent
Miles Gibson   +3 more
doaj   +2 more sources

Photo-CIDNP for quantification of micromolar analytes in urine [PDF]

open access: yesCommunications Chemistry
Towards target diagnostics of low-concentrated molecules in biofluids, NMR spectroscopy faces limitations due to low sensitivity, signal overlap, and high equipment costs.
Marta Stefańska   +2 more
doaj   +2 more sources

Online Coupling of 80 MHz Benchtop 2D-COSY NMR to HPLC. [PDF]

open access: yesMacromol Rapid Commun
AbstractHPLC is coupled online for the first time to 2D‐NMR on a benchtop NMR spectrometer. The potential is demonstrated at 80 MHz with COSY (1H‐1H COrrelation SpectroscopY) for a mixture of methyl and propyl parabens, additives commonly used in cosmetics.
Gaborieau M   +4 more
europepmc   +3 more sources

Recent Applications of Benchtop Nuclear Magnetic Resonance Spectroscopy

open access: yesMagnetochemistry, 2021
Benchtop nuclear magnetic resonance (NMR) spectroscopy uses small permanent magnets to generate magnetic fields and therefore offers the advantages of operational simplicity and reasonable cost, presenting a viable alternative to high-field NMR ...
Hyo-Yeon Yu, Sangki Myoung, Sangdoo Ahn
doaj   +1 more source

Micromolar Concentration Affinity Study on a Benchtop NMR Spectrometer with Secondary 13C Labeled Hyperpolarized Ligands [PDF]

open access: yesACS Omega
Olivier Cala   +13 more
doaj   +2 more sources

Benchtop 1H NMR spectroscopy as a practical tool for characterization of chemically ex-changing systems in Ascorbic acid

open access: yesJournal of Advanced Research in Natural and Applied Sciences, 2021
Nuclear magnetic resonance (NMR) spectra and its action on characterization of pH dependent systems are among the most useful tools in spectroscopic techniques. Nevertheless, practical considerations often limit the application of High field NMR owing to
Sevil Cikrikci
doaj   +1 more source

What is the best spectroscopic method for simultaneous analysis of organic acids and (poly)saccharides in biological matrices: Example of Aloe vera extracts?

open access: yesTalanta Open, 2023
Several species of (poly)saccharides and organic acids can be found often simultaneously in various biological matrices, e.g., fruits, plant materials, and biological fluids. The analysis of such matrices sometimes represents a challenging task.
Franziska Block   +6 more
doaj   +1 more source

Multi-scale benchtop 1H NMR spectroscopy for milk analysis [PDF]

open access: yesLWT, 2021
Abstract Benchtop NMR systems offers various advantages such as being easy to use, not requiring constant maintenance and being available at affordable prices. In this study, multiple aspects of benchtop NMR spectroscopy were explored to analyze milk in an industrial context, either regarding the quality of production or regarding the differentiation
Alper Soyler   +6 more
openaire   +2 more sources

129Xe ultra-fast Z spectroscopy enables micromolar detection of biosensors on a 1 T benchtop spectrometer [PDF]

open access: yesMagnetic Resonance, 2021
The availability of a benchtop nuclear magnetic resonance (NMR) spectrometer, of low cost and easily transportable, can allow detection of low quantities of biosensors, provided that hyperpolarized species are used.
K. Chighine   +4 more
doaj   +1 more source

Functionalized Controlled Porous Glasses for Producing Radical-Free Hyperpolarized Liquids by Overhauser DNP

open access: yesMolecules, 2022
Overhauser dynamic nuclear polarization (ODNP) can be used as a tool for NMR signal enhancement and happens on very short time scales. Therefore, ODNP is well suited for the measurement of fast-flowing samples, even in compact magnets, which is ...
Raphael Kircher   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy