Nano-Au/Oxide Support Catalysts in Oxidation Reactions: Provenance of Active Oxygen Species

ChemInform ◽  
2006 ◽  
Vol 37 (23) ◽  
Author(s):  
Barbara Grzybowska-Swierkosz
Keyword(s):  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species ◽  
Oxidation Reactions ◽  
Oxide Support

Synthesis and oxidation catalysis of a Ti-substituted phosphotungstate, and identification of the active oxygen species

2015 ◽  
Vol 5 (10) ◽  
pp. 4778-4789 ◽  
Author(s):  
Eri Takahashi ◽  
Keigo Kamata ◽  
Yuji Kikukawa ◽  
Sota Sato ◽  
Kosuke Suzuki ◽  
...  
Keyword(s):  
Active Oxygen Species ◽  
Catalytic Performance ◽  
Active Species ◽  
Active Oxygen ◽  
Oxidation Catalysis ◽  
Oxygen Species ◽  
Oxidation Reactions ◽  
Catalytically Active

A Ti-substituted phosphotungstate (I) showed high catalytic performance for several oxidation reactions. The truly catalytically active species was successfully isolated, and its anion structure was determined.

Characterization and functional properties of new everbearing strawberry (Fragaria x ananasa Duch.) cultivar, ‘Summertiara’ berries

2014 ◽  
Vol 4 (1) ◽  
pp. 1 ◽  
Author(s):  
Takeshi Nagai ◽  
Misuzu Tamai ◽  
Masato Sato ◽  
Yasuhiro Tanoue ◽  
Norihisa Kai ◽  
...  
Keyword(s):  
Vitamin C ◽  
Sensory Evaluation ◽  
Functional Properties ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Antihypertensive Activity ◽  
Oxygen Species ◽  
Total Anthocyanins ◽  
Strawberry Cultivar ◽  
The Stability

Background: In recent years, a new everbearing strawberry cultivar, ‘Summertiara’ was cultivated to supply the strawberries in pre-harvest season from July to October in Japan. For highly research and development of processing of this cultivar, ‘Summertiara’ berries, the objective of this study was to characterize these berries, with relation to chemical parameters, total phenols, total flavonoids, total vitamin C, and total anthocyanins, and was to investigate the solubility and the stability of anthocyanins from the berries. Moreover, the functional properties such as antioxidative activity, active oxygen species scavenging activity, and antihypertensive activity were also evaluated.Methods: Chemical analysis, colour measurement, and sensory evaluation of new everbearing strawberry cultivar, ‘Summertiara’ berries were performed. Next, the solubility of anthocyanins from the berries and stability of these against pH, temperature, and an incandescent lighting were investigated. Moreover, functional properties of the extracts prepared from berries were elucidated using 5 different methods.Results: The contents of water, proteins, lipids, carbohydrates, and ash were the same as those of other cultivar berries. The sugar-acid ratio in the berries was low; these were acidulous. By sensory evaluation, the main factors were vivid red colour, aroma, and acidity. The berries were rich in phenols, flavonoids, vitamin C, and anthocyanins. The anthocyanins of the berries became unstable by heat treatment and light exposures such as visible rays. On the other hand, the extracts prepared from the berries showed the functionalities such as antioxidant activity, active oxygen species scavenging activities, and antihypertensive activity.  Conclusions: The strawberry cultivar, ‘Summertiara’ berries were the most suitable for processing ingredient of strawberry-derived products with superior health promoting functionalities.Keywords: Summertiara, everbearing strawberry cultivar, characterization, sensory evaluation, color and storage, functional property

Identifying the Active Oxygen Species in SnO2 Based Gas Sensing Materials: An Operando IR Spectrsocopy Study

2015 ◽  
Vol 119 (21) ◽  
pp. 11792-11799 ◽  
Author(s):  
David Degler ◽  
Susanne Wicker ◽  
Udo Weimar ◽  
Nicolae Barsan
Keyword(s):  
Gas Sensing ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species ◽  
Ir Spectrsocopy

Chromosome damage caused by enzymically generated active oxygen species

1983 ◽  
Vol 18 ◽  
pp. 47
Author(s):  
B.J. Phillips ◽  
T.E.B. James ◽  
D. Anderson
Keyword(s):  
Active Oxygen Species ◽  
Active Oxygen ◽  
Chromosome Damage ◽  
Oxygen Species

Nitric oxide and active oxygen species in severe sepsis and surgically stressed patients

Surgery Today ◽  
1995 ◽  
Vol 25 (9) ◽  
pp. 774-777 ◽  
Author(s):  
Katsuhisa Tanjoh ◽  
Atsuyuki Shima ◽  
Mitsuhiro Aida ◽  
Ryouichi Tomita ◽  
Yasuhiko Kurosu
Keyword(s):  
Nitric Oxide ◽  
Severe Sepsis ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species
Sign in / Sign up

Export Citation Format

Share Document