Search Results - "Venter, Andre R."

Protein analysis by desorption electrospray ionization mass spectrometry and related methods by Douglass, Kevin Aart, Venter, Andre R.

“…Desorption electrospray ionization mass spectrometry (DESI‐MS) requires little to no sample preparation and has been successfully applied to the study of…”
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Protein analysis by desorption electrospray ionization mass spectrometry by Venter, Andre R

“…This review presents progress made in the ambient analysis of proteins, in particular by desorption electrospray ionization-mass spectrometry (DESI-MS)…”
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Hydrogen Is the Superior Nebulization Gas for Desorption and Electrospray Ionization by Binny, Bincy, Joseph, George, Venter, Andre R.

“…A previous comparative study between helium and nitrogen as nebulizing and desolvation gases in electrospray ionization (ESI) and desorption electrospray…”
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Effects of Amino Acid Additives on Protein Stability during Electrothermal Supercharging in ESI-MS by Javanshad, Roshan, Panth, Rajendra, Venter, Andre R

“…The surprising formation of highly charged protein ions from aqueous ammonium bicarbonate solution is a fascinating phenomenon referred to as electrothermal…”
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Surface Sampling by Spray-Desorption Followed by Collection for Chemical Analysis by Venter, Andre R, Kamali, Afrand, Jain, Shashank, Bairu, Semere

“…Desorption electrospray ionization (DESI) directly analyzes soluble chemical components present on surfaces when a pneumatically assisted electrospray is…”
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Comparing the Effects of Additives on Protein Analysis Between Desorption Electrospray (DESI) and Electrospray Ionization (ESI) by Honarvar, Elahe, Venter, Andre R.

“…It is frequently said that DESI-MS follows a similar ionization mechanism as ESI because of similarities usually observed in their respective mass spectra…”
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Ammonium Bicarbonate Addition Improves the Detection of Proteins by Desorption Electrospray Ionization Mass Spectrometry by Honarvar, Elahe, Venter, Andre R.

“…The analysis of protein by desorption electrospray ionization mass spectrometry (DESI-MS) is considered impractical due to a mass-dependent loss in sensitivity…”
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Mechanisms of Real-Time, Proximal Sample Processing during Ambient Ionization Mass Spectrometry by Venter, Andre R, Douglass, Kevin A, Shelley, Jacob T, Hasman, Gregg, Honarvar, Elahe

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Addition of Serine Enhances Protein Analysis by DESI-MS by Javanshad, Roshan, Honarvar, Elahe, Venter, Andre R.

“…Previous studies have suggested that the loss in sensitivity of DESI-MS for large molecules such as proteins is due to the poor dissolution during the short…”
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Investigating the Role of Adducts in Protein Supercharging with Sulfolane by Douglass, Kevin Aart, Venter, Andre R.

“…The supercharging effect of sulfolane on cytochrome c (cyt c ) during electrospray ionization mass spectrometry (ESI-MS) in the absence of conformational…”
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Analysis of histidine-tagged recombinant proteins from nickel and copper coated surfaces by direct electrospray ionization and desorption electrospray ionization mass spectrometry by Javanshad, Roshan, Taylor, Christopher James, Delavari, Niusha, Barkman, Todd J, Stull, Frederick, Venter, Andre R

“…Purification of recombinant proteins is a necessary step for functional or structural studies and other applications. Immobilized metal affinity chromatography…”
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Delayed Desorption Improves Protein Analysis by Desorption Electrospray Ionization Mass Spectrometry by Maser, Tara L, Honarvar, Elahe, Venter, Andre R

“…Protein analysis by desorption electrospray ionization mass spectrometry (DESI-MS) is limited and often accompanied by a mass-dependent loss in sensitivity as…”
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The Addition of Polar Organic Solvent Vapors During the Analysis of Proteins by DESI-MS by Javanshad, Roshan, Maser, Tara L., Honarvar, Elahe, Venter, Andre R.

“…Exposure of electrospray droplets to organic vapors was shown to dramatically reduce alkali-metal adduction on protein ions and shift protein charge states…”
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Reaction Kinetics and Efficiencies for the Hydroxyl and Sulfate Radical Based Oxidation of Artificial Sweeteners in Water by Toth, Janie E, Rickman, Kimberly A, Venter, Andre R, Kiddle, James J, Mezyk, Stephen P

“…Over the past several decades, the increased use of artificial sweeteners as dietary supplements has resulted in rising concentrations of these contaminants…”
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Spray desorption collection: an alternative to swabbing for pharmaceutical cleaning validation by Jain, Shashank, Heiser, Amy, Venter, Andre R

“…Spray Desorption Collection (SDC) allows for much larger areas of surfaces to be sampled compared to traditional swabbing techniques, providing a valuable…”
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Predicting the Highest Intensity Ion in Multiple Charging Envelopes Observed for Denatured Proteins during Electrospray Ionization Mass Spectrometry by Inspection of the Amino Acid Sequence by Douglass, Kevin A, Venter, Andre R

“…A simple, manual method for predicting the highest intensity charge states (HICS) of denatured protein ions generated by electrospray ionization based on…”
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Identification of metabolites produced during the complete biodegradation of 1-butyl-3-methylimidazolium chloride by an enriched activated sludge microbial community by Al Isawi, Wisam A., Rahbarirad, Sepideh, Walker, Katherine A., Venter, Andre R., Docherty, Kathryn M., Szymczyna, Blair R.

“…Ionic liquids (ILs) are highly polar solvents with unique physicochemical properties that make them promising green alternatives to volatile organic solvents…”
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Deconstructing Desorption Electrospray Ionization: Independent Optimization of Desorption and Ionization by Spray Desorption Collection by Douglass, Kevin A., Jain, Shashank, Brandt, William R., Venter, Andre R.

“…Spray desorption collection (SDC) and reflective electrospray ionization (RESI) were used to independently study the desorption and ionization processes that…”
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Rhodamine Based Turn-On Sensors for Ni(2+) and Cr(3+) in Organic Media: Detecting CN(-) via the Metal Displacement Approach by Weerasinghe, Aruna J, Oyeamalu, Agozie N, Abebe, Fasil A, Venter, Andre R, Sinn, Ekkehard

“…Two novel sensors bearing rhodamine B and quinoline units have been synthesized. One of these, 1, allows sensitive and selective detection of Ni(2+) and Cr(3+)…”
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On the Role of a Direct Interaction between Protein Ions and Solvent Additives during Protein Supercharging by Electrospray Ionization Mass Spectrometry by Douglass, Kevin A., Venter, Andre R.

“…The addition of certain reagents during the electrospray ionization mass spectrometry of proteins can shift the protein ion signal charge-state distributions…”
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