Proton-Coupled Electron Transfer of Unsaturated Fatty Acids and Mechanistic Insight into Lipoxygenase

2006 ◽  
Vol 89 (10) ◽  
pp. 2425-2440 ◽  
Author(s):  
Shunichi Fukuzumi
Keyword(s):  
Fatty Acids ◽  
Electron Transfer ◽  
Unsaturated Fatty Acids ◽  
Proton Coupled Electron Transfer ◽  
Mechanistic Insight ◽  
Insight Into

scholarly journals Insight into the Secondary Metabolites of Geum urbanum L. and Geum rivale L. Seeds (Rosaceae)

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1219
Author(s):  
Marek Bunse ◽  
Peter Lorenz ◽  
Florian C. Stintzing ◽  
Dietmar R. Kammerer
Keyword(s):  
Fatty Acids ◽  
Phenolic Compounds ◽  
Unsaturated Fatty Acids ◽  
Asiatic Acid ◽  
Cosmetic Products ◽  
Nutritional Properties ◽  
First Time ◽  
Derivatives Of ◽  
Geum Urbanum ◽  
Insight Into

The present study aimed at the identification and quantitation of phenolic compounds, fatty acids, and further characteristic substances in the seeds of Geum urbanum L. and Geum rivale L. For this purpose, individual components of extracts recovered with MeOH, CH2Cl2, and by cold-pressing, respectively, were characterized by HPLC-DAD/ESI-MSn and GC/MS and compared with reference compounds. For both Geum species, phenolic compounds, such as flavonoids and gallic acid derivatives, and triterpenes, such as saponins and their aglycones, were detected. Surprisingly, both Geum species revealed the presence of derivatives of the triterpenoid aglycons asiatic acid and madecassic acid, which were characterized for the first time in the genus Geum. Furthermore, the fatty acids of both species were characterized by GC–MS after derivatization. Both species showed a promising fatty-acid profile in terms of nutritional properties because of high proportions of unsaturated fatty acids. Linoleic acid and linolenic acid were most abundant, among other compounds such as palmitic acid and stearic acid. In summary, the present study demonstrates the seeds of G. urbanum and G. rivale to be a valuable source of unsaturated fatty acids and bioactive phenolics, which might be exploited for nutritional and cosmetic products and for phytotherapeutic purposes.

scholarly journals Anomalous chemically induced electron spin polarization in proton-coupled electron transfer reactions: insight into radical pair dynamics

2020 ◽  
Vol 11 (24) ◽  
pp. 6268-6274
Author(s):  
Alexander M. Brugh ◽  
Malcolm D. E. Forbes
Keyword(s):  
Electron Transfer ◽  
Ruthenium Complex ◽  
Transfer Reactions ◽  
Electron Spin Polarization ◽  
Paramagnetic Resonance ◽  
Time Resolved ◽  
Proton Coupled Electron Transfer ◽  
Chemically Induced ◽  
Electron Paramagnetic ◽  
Insight Into

Time-resolved electron paramagnetic resonance (TREPR) spectroscopy has been used to study the proton coupled electron transfer (PCET) reaction between a Ruthenium complex (Ru(bpz)(bpy)2) and several substituted hydroquinones (HQ).

scholarly journals Proton-Coupled Electron Transfer of Ruthenium(III)−Pterin Complexes: A Mechanistic Insight

2009 ◽  
Vol 131 (32) ◽  
pp. 11615-11624 ◽  
Author(s):  
Soushi Miyazaki ◽  
Takahiko Kojima ◽  
James M. Mayer ◽  
Shunichi Fukuzumi
Keyword(s):  
Electron Transfer ◽  
Proton Coupled Electron Transfer ◽  
Mechanistic Insight

scholarly journals Mechanistic insight into proton-coupled mixed valency

2016 ◽  
Vol 52 (1) ◽  
pp. 100-103 ◽  
Author(s):  
Luke A. Wilkinson ◽  
Kevin B. Vincent ◽  
Anthony J. H. M. Meijer ◽  
Nathan J. Patmore
Keyword(s):  
Electron Transfer ◽  
Valence State ◽  
Mixed Valence ◽  
Bridging Ligands ◽  
Mixed Valency ◽  
Mixed Valence State ◽  
Mechanistic Insight ◽  
Insight Into

Stabilisation of the mixed-valence state in [Mo2(TiPB)3(HDOP)]2+ (HTiPB = 2,4,6-triisopropylbenzoic acid, H2DOP = 3,6-dihydroxypyridazine) by electron transfer (ET) is related to the proton coordinate of the bridging ligands.

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