scholarly journals Free radical scavenging ability of Ximenia americana L. stem bark and leaf extracts

2016 ◽  
pp. 091-096 ◽  
Author(s):  
Valdil ocirc,a ◽  
Cleyton Sousa ◽  
Adonias Carvalho ◽  
Ant Sant'Ana ◽  
Mariana Chaves
Keyword(s):  
Free Radical ◽  
Radical Scavenging ◽  
Stem Bark ◽  
Free Radical Scavenging ◽  
Leaf Extracts ◽  
Ximenia Americana ◽  
Radical Scavenging Ability

scholarly journals Research antioxidant activity of chitooligosacchride by UV-VIS absorption spectrocopy

2020 ◽  
Vol 8 (1) ◽  
pp. 75-81
Author(s):  
Bui Van Hoai ◽  
Ngo Dai Nghiep ◽  
Dao An Quang ◽  
Nguyen Thi Nam Phuong
Keyword(s):  
Molecular Weight ◽  
Antioxidant Activity ◽  
Absorption Spectrum ◽  
Free Radical ◽  
Trichoderma Viride ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Free Radical Scavenging ◽  
Degree Of Deacetylation ◽  
Radical Scavenging Ability

Chitosan with 80% degree of deacetylation was hydrolyzed by cellulase of Trichoderma viride to prepare chitooligosaccharides (COSs) by the fractionation of the COSs with ultrafiltration membrane. The antioxidant activities of the COSs were clarified in this study by reducing power and free radical scavenging ability assay by UV-VIS absorption spectrum. The results show that the COS 1 (10,000-5,000 Da), COS 2 (5,000-3,000 Da), COS 3 (3,000-1,000 Da) and COS 4 (less than1,000 Da) segments have antioxidant properties.The antioxidant activitives of the COSs increased with the increment of concentration, and they also depended on molecular weight.

scholarly journals ANTIOXIDANT ACTIVITY OF LEAF EXTRACTS OF HEMIDESMUS INDICUS (L.) R.BR. (ASCLEPIADACEAE).

2017 ◽  
Vol 10 (6) ◽  
pp. 200
Author(s):  
Abdul Kaffoor H ◽  
Muthuraj K ◽  
Arumugasamy K
Keyword(s):  
Free Radical ◽  
Aqueous Extract ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Free Radical Scavenging Activity ◽  
Scavenging Activity ◽  
Leaf Extracts ◽  
Stable Free Radical ◽  
Hemidesmus Indicus

Objective: A number of Indian medicinal plants have been used for thousands of years in a traditional system of medicine. Hemidesmus indicus is an important member of the Asclepiadaceae family. It is an endemic to the southern Western Ghats, India. The aim of the study was to investigate the free radical scavenging activity of H. indicus. Methods: The aqueous and methanol leaf extracts of H. indicus were assayed for radical scavenging activity, using the stable free radical 2,2-diphenyl- 1-picryl-hydrazyl-hydrate and 2,2’-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid). Results: The results revealed that the IC50 values of aqueous extract of H. indicus were found to be higher than that of the other solvent extracts. The free radical scavenging activity of the plant extracts may be due to the presence of phytoconstituents. Conclusion: In all the methods, the aqueous extract has exhibited the good scavenging activity and this arises that the plant has a potential antioxidant agent.

Potential hepatoprotective effects of fullerenol nanoparticles on alcohol-induced oxidative stress by ROS

RSC Advances ◽  
2016 ◽  
Vol 6 (37) ◽  
pp. 31122-31130 ◽  
Author(s):  
Y. Li ◽  
H. B. Luo ◽  
H. Y. Zhang ◽  
Q. Guo ◽  
H. C. Yao ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Free Radical ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Hepatoprotective Effects ◽  
Radical Scavenging Ability

The free radical scavenging ability of fullerenols is their most exploited property in biomedical studies.

Sign in / Sign up

Export Citation Format

Share Document