Protonation in electrospray mass spectrometry: wrong-way-round or right-way-round? [PDF]
The term “wrong-way-round ionization” has been used in studies of electrospray ionization to describe the observation of protonated or deprotonated ions when sampling strongly basic or acidic solutions (respectively) where such ions are not expected to ...
Cook, Kelsey D., Zhou, Shaolian
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Gastrointestinal endogenous proteins as a source of bioactive peptides : Doctor of Philosophy in Nutritional Sciences at Riddet Institute, Massey University, Palmerston North, New Zealand [PDF]
Gastrointestinal endogenous proteins (GEP) were investigated as a source of bioactive peptides. In silico and in vitro methods were used singly or in combination to study GEP-derived peptides after simulated digestion.
Acharya, Prasannalakshmi
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Quantification of sirolimus by liquid chromatography-tandem mass spectrometry using on-line solid-phase extraction [PDF]
Quantification of the new immunosuppressant sirolimus (syn. rapamycin; Rapamune((R))) in whole blood by chromatography is essential for its clinical use since no immunoassay is available although monitoring is mandatory.
Fleischer, Claudia+5 more
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Betalains and phenolic compounds of leaves and stems of Alternanthera brasiliana and Alternanthera tenella [PDF]
Betacyanins and phenolic compounds from acetonitrile:acidified water extracts of Alternanthera brasiliana and Alternanthera tenella were characterized and quantified using a high-performance liquid chromatography system coupled with diode array and ...
Alvarez, I.+5 more
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Electron Detachment Dissociation,and Collision-Induced Dissociation of Polyamidoamine (PAMAM) Dendrimer Ions with Amino, Amidoethanol, and Sodium Carboxylate Surface Groups [PDF]
Here, we investigate the effect of the structure (generation) and nature of the surface groups of different polyamidoamine (PAMAM) dendrimers on electron-mediated dissociation, either electron capture dissociation (ECD) or electron detachment ...
Cooper, Helen J.+1 more
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Synthesis of (±)-3,4-dimethoxybenzyl- 4-methyloctanoate as a novel internal standard for capsinoid determination by HPLC-ESI-MS/MS(QTOF) [PDF]
Capsinoids exhibit health-promoting properties and are therefore compounds of interest for medical and food sciences. They are minor compounds present in relatively high concentrations in only a few number of pepper cultivars. It is desirable to quantify
Barbero, GF+10 more
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May the Best Molecule Win: Competition ESI Mass Spectrometry [PDF]
Electrospray ionization mass spectrometry has become invaluable in the characterization of macromolecular biological systems such as nucleic acids and proteins.
Laughlin, Sarah R, Wilson, W. David
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Capturing Fleeting Intermediates in a Catalytic C-H Amination Reaction Cycle [PDF]
We have applied an ambient ionization technique, desorption electrospray ionization MS, to identify transient reactive species of an archetypal C–H amination reaction catalyzed by a dirhodium tetracarboxylate complex.
Cahill, Thomas J., III+4 more
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Mass Spectrometry in the Elucidation of the Glycoproteome of Bacterial Pathogens [PDF]
Presently some three hundred post-translational modifications are known to occur in bacteria in vivo. Many of these modifications play critical roles in the regulation of proteins and control key biological processes.
Graham, Robert L. J., Hess, Sonja
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Complete gradient-LC-ESI system on a chip for protein analysis [PDF]
This paper presents the first fully integrated gradient-elution liquid chromatography-electrospray ionization (LC-ESI) system on a chip. This chip integrates a pair of high-pressure gradient pumps, a sample injection pump, a passive mixer, a packed ...
Lee, T. D.+3 more
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