scholarly journals A comparative study on total phenolic content, reducing power and free radical scavenging activity of aerial parts of Barleria prionitis.

2010 ◽  
Vol 2 (2) ◽  
pp. 155-159 ◽  
Author(s):  
Sunil K. Jaiswal ◽  
Mukesh K. Dubey ◽  
Sanjeeb Das ◽  
Arti Raj Verma ◽  
Ch.V. Rao
1970 ◽  
Vol 8 (2) ◽  
pp. 173-175 ◽  
Author(s):  
Md Abul Kaisar ◽  
Mohammad Rashedul Islam ◽  
Mohammad Sarifur Rahman ◽  
Md Khalid Hossain ◽  
Mohammad A Rashid

DOI: 10.3329/dujps.v8i2.6034 Dhaka Univ. J. Pharm. Sci. 8(2): 173-175, 2009 (December)


2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Richa Upadhyay ◽  
Jitendra Kumar Chaurasia ◽  
Kavindra Nath Tiwari ◽  
Karuna Singh

In present study free radical scavenging potential of aerial parts and root ofPhyllanthus fraternuswas investigated. Extraction was done in water and ethanol. Total antioxidant capacity was measured by DPPH free radical scavenging method; ethanolic extract of aerial part was most potent in activity with 50% inhibition at 258 μg/mL concentration. Lipid peroxidation (LPO) was measured in terms of thiobarbituric acid-reactive substances (TBARS) by using egg-yolk homogenates as lipid-rich media with EC50of aerial part (ethanolic) 1522 μg/mL which was found to be most active. Superoxide (SO) radical scavenging activity was measured using riboflavin-light-nitroblue tetrazolium assay. Ethanolic and aqueous extract of both aerial part and root was almost similar in superoxide radical scavenging activity. Reducing power was determined on the basis ofFe3+-Fe2+transformation in the presence of extract. Total phenolic and flavonoid contents were also measured by spectroscopic method. Results showed that the ethanolic fraction of aerial part is most active towards antioxidant potential and this activity is related to its polyphenolic content and reducing potential. Thus,P. fraternusextract can be used as potent natural antioxidant.


2019 ◽  
Vol 8 (6) ◽  
pp. 94
Author(s):  
Y. Riswahyuli ◽  
Abdul Rohman ◽  
Francis M. C. S. Setyabudi ◽  
Sri Raharjo

Several wild honey samples collected from seven different regions in Indonesia were investigated to determine their total phenolic content, flavonoid content, and free radical scavenging activity by analyzing the 1,1-diphenyl-2-picrylhydrazyl (DDPH) radical and phenolic profile. Rutin, (+)-catechin, ferulic acid, and galangin were found to be the major phenolic compounds of Indonesia wild honey. The total phenolic content significantly correlated with the total flavonoid content (p=0.000) and the percentage of DPPH radical scavenging activity (p=0.000). Results indicated that there are different polyphenol profiles among the different regions.


2013 ◽  
Vol 2 (4) ◽  
pp. 92-96 ◽  
Author(s):  
Md. Hasanuzzaman ◽  
Md. Ramjan Ali ◽  
Marjan Hossain ◽  
Sourov Kuri ◽  
Mohammad Safiqul Islam

The present study was designed to investigate the phytochemical screening, the free radical scavenging activity and to determine the total phenolic content of methanolic extract and different solvent soluble fractions of Averrhoa bilimbi Linn. (Oxalidiaceae) fruits. The free radical scavenging activity was evaluated by analyzing the bleaching rate of 1,1-diphenyl-2-picrylhydrazyl (DPPH), and total phenolic content was determined by using Folin-Ciocalteau reagent, which results were expressed in gallic acid equivalent (mg of GAE/g of sample). The phytochemical screening revealed the potent source of different phytochemical constituents on different extractives including, phenol, flavonoid, tannin that are responsible for antioxidant action. In the determination of total phenolic content, different extractives showed a significant content of phenolic compounds ranging from 50.23-68.67 mg of GAE/g of extractive. The plant sample displayed significant DPPH free radical scavenging activity with highest IC50 value in crude methanolic extract (30.365 ?g/ml) followed by chloroform, carbon tetrachloride, pet-ether and aqueous soluble fractions having value of 32.852 ?g/ml, 36.708 ?g/ml, 50.35 ?g/ml, and 79.918 ?g/ml, respectively as opposed to that of the scavenging effects of BHT of 19.656 ?g/ml.DOI: http://dx.doi.org/10.3329/icpj.v2i4.14058 International Current Pharmaceutical Journal, March 2013, 2(4): 92-96


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