Study of the isomeric Maillard degradants, glycosylamine and Amadori rearrangement products, and their differentiation via MS 2 fingerprinting from collision‐induced decomposition of protonated ions

2021 ◽  
Vol 35 (9) ◽  
Author(s):  
Shaolan Wang ◽  
Jinsheng Lin ◽  
Dan Li ◽  
Tianpei Huang ◽  
Wenquan Zhu ◽  
...  
Keyword(s):  
Amadori Rearrangement ◽  
Induced Decomposition

RADIATION-INDUCED DECOMPOSITION AND POLYMERIZATION OF POLYVINYL ALCOHOL IN AQUEOUS SOLUTIONS

2013 ◽  
Vol 12 (7) ◽  
pp. 1323-1328 ◽  
Author(s):  
Lujun Chen ◽  
Weihua Sun ◽  
Jinping Tian ◽  
Jianlong Wang ◽  
Shijun He
Keyword(s):  
Polyvinyl Alcohol ◽  
Aqueous Solutions ◽  
Radiation Induced ◽  
Induced Decomposition

Novel Products in the CO2-Laser Induced Reaction of Trichloroethylene

1995 ◽  
Vol 60 (1) ◽  
pp. 104-114 ◽  
Author(s):  
Boyd L. Earl ◽  
Richard L. Titus
Keyword(s):  
Irradiation Time ◽  
Product Distribution ◽  
Incident Power ◽  
Cell Geometry ◽  
Reaction Conditions ◽  
Peak Areas ◽  
Induced Decomposition ◽  
Nmr Methods ◽  
Induced Reaction ◽  
Novel Products

Previous reports on the thermal or CO2-laser induced decomposition of trichloroethylene have identified only one condensible product, hexachlorobenzene (in addition to HCl and mono- and dichloroacetylene). We have found that trichloroethylene vapor exposed to cw irradiation on the P(24) line of the (001 - 100) band of the CO2 laser at incident power levels from 8 - 17 W produces numerous products, of which the 13 major ones have been identified using IR, GC/MS, GC/FTIR, and NMR methods. All of these products have 4, 6, or 8 carbons, are highly unsaturated, and are completely chlorinated or contain a single hydrogen. C4HCl5 and C6Cl6 isomers (three of each) account for S 55% to 85% of total products (based on peak areas in the total ion chromatograms in GC/MS runs), depending on reaction conditions. In addition to characterizing the products, we discuss the dependence of the product distribution on laser power, irradiation time, and cell geometry, and we outline a possible mechanism.

Radical Intermediates in Photochemical and Redox Initiated Decomposition of Thioazo Compounds(an EPR and Cyclovoltammetric Study)

1997 ◽  
Vol 62 (6) ◽  
pp. 855-865 ◽  
Author(s):  
Katarína Erentová ◽  
Vladimír Adamčík ◽  
Andrej Staško ◽  
Oskar Nuyken ◽  
Arming Lang ◽  
...  
Keyword(s):  
Decomposition Rate ◽  
Half Life ◽  
Spin Trap ◽  
Solvent Molecule ◽  
Life Time ◽  
Radical Intermediates ◽  
Reactive Radicals ◽  
Induced Decomposition

The cathodically and photochemically induced decomposition of thioazo compounds XC6H4-N2-S-C6H4CH3 and their polymers with X = NO2, COOH, and SO3H were investigated. The formation of carbon-centered XC6H4. and sulfur-centered .S-C6H4Y radicals was confirmed using spin-trap technique. These reactive radicals either abstract hydrogen from CH3CN solvent molecule forming .CH2CN radical or they recombine to cage products XC6H4-S-C6H4CH3 eliminating N2. The decomposition rate of the investigated thioazo compounds is characterized by a formal half-life time of 5 to 10 s.

Trimethyl Phosphate Induced Decomposition of Kaolinite

1994 ◽  
Vol 42 (2) ◽  
pp. 221-225 ◽  
Author(s):  
María Sánchez-Camazano
Keyword(s):  
Trimethyl Phosphate ◽  
Induced Decomposition

scholarly journals Ultrathin and compact electron transport layer made from novel water-dispersed Fe3O4 nanoparticles to accomplish UV-stable perovskite solar cells

2021 ◽  
Author(s):  
Song Fang ◽  
Bo Chen ◽  
Bangkai Gu ◽  
Linxing Meng ◽  
Hao Lu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Electron Transport ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Perovskite Material ◽  
Main Factors ◽  
Induced Decomposition

UV induced decomposition of perovskite material is one of main factors to severely destroy perovskite solar cells for instability. Here we report a UV stable perovskite solar cell with a...

scholarly journals Nitric oxide formation during light-induced decomposition of phenyl N-tert-butylnitrone

1993 ◽  
Vol 268 (16) ◽  
pp. 11520-11527
Author(s):  
W. Chamulitrat ◽  
S.J. Jordan ◽  
R.P. Mason ◽  
K. Saito ◽  
R.G. Cutler
Keyword(s):  
Nitric Oxide ◽  
Oxide Formation ◽  
Nitric Oxide Formation ◽  
Induced Decomposition

scholarly journals Amadori rearrangement products as potential biomarkers for inborn errors of amino-acid metabolism

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Rianne E. van Outersterp ◽  
Sam J. Moons ◽  
Udo F. H. Engelke ◽  
Herman Bentlage ◽  
Tessa M. A. Peters ◽  
...  
Keyword(s):  
Amino Acid ◽  
Amino Acid Metabolism ◽  
Acid Metabolism ◽  
The Body ◽  
Inborn Errors ◽  
Primary Metabolite ◽  
Diagnostic Strategies ◽  
Ion Spectroscopy ◽  
Disease Biomarkers ◽  
Amadori Rearrangement

AbstractThe identification of disease biomarkers plays a crucial role in developing diagnostic strategies for inborn errors of metabolism and understanding their pathophysiology. A primary metabolite that accumulates in the inborn error phenylketonuria is phenylalanine, however its levels do not always directly correlate with clinical outcomes. Here we combine infrared ion spectroscopy and NMR spectroscopy to identify the Phe-glucose Amadori rearrangement product as a biomarker for phenylketonuria. Additionally, we find analogous amino acid-glucose metabolites formed in the body fluids of patients accumulating methionine, lysine, proline and citrulline. Amadori rearrangement products are well-known intermediates in the formation of advanced glycation end-products and have been associated with the pathophysiology of diabetes mellitus and ageing, but are now shown to also form under conditions of aminoacidemia. They represent a general class of metabolites for inborn errors of amino acid metabolism that show potential as biomarkers and may provide further insight in disease pathophysiology.

ChemInform Abstract: Synthesis of Pure Amadori Rearrangement Products.

ChemInform ◽  
2010 ◽  
Vol 26 (46) ◽  
pp. no-no
Author(s):  
S. N. NOOMEN ◽  
G. J. BREEL ◽  
C. WINKEL
Keyword(s):  
Amadori Rearrangement
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