scholarly journals Superoxide anion radical scavenging activity of bilberry (Vaccinium myrtillus L.)

2010 ◽  
Vol 1 (1) ◽  
pp. 13-23 ◽  
Author(s):  
Vesna Tumbas ◽  
Jasna Čanadanović-Brunet ◽  
Lars Gille ◽  
Sonja Đilas ◽  
Gordana Ćetković
Keyword(s):  
Superoxide Anion ◽  
Anion Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Vaccinium Myrtillus ◽  
Superoxide Anion Radical ◽  
Scavenging Activity ◽  
Vaccinium Myrtillus L

Correlation between Anthocyanins, Total Phenolics Content and Antioxidant Activity of Purple Corn (Zea mays L.)

2014 ◽  
Vol 651-653 ◽  
pp. 220-226
Author(s):  
Min Zhu ◽  
Zhen Sheng Shi ◽  
Feng Hai Li
Keyword(s):  
Superoxide Anion ◽  
Anion Radical ◽  
Total Phenolics ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Superoxide Anion Radical ◽  
Scavenging Activity ◽  
Purple Corn

Six purple corn grains were chosen to investigate their antioxidant activities and the relationships between anthocyanins and phenolics contents with antioxidant activities. Purple grains were screened for their antioxidant potentials using various in-vitro models such as superoxide anion radical scavenging activity and reducing power at various concentrations. The result showed that ZS39 and FS11 exhibited the highest anthocyanins and total phenolics contents. ZS39 and FS11 also exhibited the highest superoxide anion radical scavenging activity. There was no significant difference among the reducing power of six different purple corn grain extracts. It was found that there were positive correlations between anthocyanins and superoxide anion radical scavenging activity or reducing power, R2=0.9911, R2=0.9873, respectively. Whereas the correlations between total phenolics and superoxide anion radical scavenging activity or reducing power, R2=0.9863, R2=0.9826, respectively. It suggested that purple corn appeared to be a rich and interesting source of natural antioxidants.

scholarly journals The presence of thecagpathogenicity island is associated with increased superoxide anion radical scavenging activity byHelicobacter pylori

2005 ◽  
Vol 44 (2) ◽  
pp. 227-232 ◽  
Author(s):  
Jacob J. Briedé ◽  
Raymond G.J. Pot ◽  
Ernst J. Kuipers ◽  
Arnoud H.M. Vliet ◽  
Jos C.S. Kleinjans ◽  
...  
Keyword(s):  
Superoxide Anion ◽  
Anion Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Superoxide Anion Radical ◽  
Scavenging Activity

Optimization of Pyrogallol Autoxidation Conditions and Its Application in Evaluation of Superoxide Anion Radical Scavenging Capacity for Four Antioxidants

2016 ◽  
Vol 99 (2) ◽  
pp. 504-511 ◽  
Author(s):  
Qing-An Zhang ◽  
Xi Wang ◽  
Yun Song ◽  
Xue-Hui Fan ◽  
Juan Francisco García Martín
Keyword(s):  
Ascorbic Acid ◽  
Antioxidant Capacity ◽  
Gallic Acid ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Superoxide Anion Radical ◽  
Scavenging Activity ◽  
Pyrogallol Autoxidation

Abstract In this study, some factors influencing pyrogallol autoxidation, including EDTA, temperature, and solvent, were systematically investigated to improve its feasibility in the evaluation of antioxidants for the first time. Subsequently, the improved pyrogallol autoxidation conditions were used to assess the superoxide anion scavenging activity (SASA) of four commonly used antioxidants, namely, ascorbic acid, rutin, catechin, and gallic acid, by both the reaction rate method and the terminated method. The results indicate that pyrogallol autoxidation could be successfully used to determine the antioxidant capacity of ascorbic acid and rutin, which correspondingly suggests the feasibility of its use to measure the superoxide anion radical scavenging activity of polysaccharides and flavonols, because these compounds have a similar basic structural unit as ascorbic acid and rutin, respectively. Unexpectedly, however, pyrogallol autoxidation cannot be used to evaluate the SASA of catechin and gallic acid, although their good antioxidant capacity was confirmed by the 1,1-diphenyl-2-picrylhydrazyl assay. Together, these results suggest the importance of noting the conditions used for pyrogallol autoxidation when assessing the SASA of targeted compounds.

Characterization of the superoxide anion radical scavenging activity by tetracycline antibiotics in aprotic media

Luminescence ◽  
2011 ◽  
Vol 26 (6) ◽  
pp. 611-615 ◽  
Author(s):  
Aleksandra Kładna ◽  
Irena Kruk ◽  
Teresa Michalska ◽  
Paweł Berczyński ◽  
Hassan Y. Aboul-Enein
Keyword(s):  
Superoxide Anion ◽  
Anion Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Superoxide Anion Radical ◽  
Scavenging Activity ◽  
Tetracycline Antibiotics

Pterin-6-aldehyde, an Inhibitor of Xanthine Oxidase, Has Superoxide Anion Radical Scavenging Activity

1997 ◽  
Vol 233 (2) ◽  
pp. 447-450 ◽  
Author(s):  
Koji Watanabe ◽  
Toshiyuki Arai ◽  
Hiroko Mori ◽  
Shin-ichi Nakao ◽  
Toshinori Suzuki ◽  
...  
Keyword(s):  
Xanthine Oxidase ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Superoxide Anion Radical ◽  
Scavenging Activity
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