Title |
Evaluation of Antioxidant, Free Radical Scavenging, and Antimicrobial Activity of Quercus incana Roxb.
|
---|---|
Published in |
Frontiers in Pharmacology, November 2015
|
DOI | 10.3389/fphar.2015.00277 |
Pubmed ID | |
Authors |
Rizwana Sarwar, Umar Farooq, Ajmal Khan, Sadia Naz, Sara Khan, Afsar Khan, Abdur Rauf, Haji Bahadar, Reaz Uddin |
Abstract |
Considering the indigenous utilization of Quercus incana Roxb., the present study deals with the investigation of antioxidant, free radical scavenging activity, total phenolic content, and antimicrobial activity of Q. incana Roxb. In vitro antioxidant activity of the plant fractions were determined by 1,1-diphenyl-2-picrylhydrazyl and nitric oxide scavenging method. Total phenolic contents were determined by gallic acid equivalent and antimicrobial activities were determined by agar well diffusion method. It was observed that Q. incana Roxb. showed significant antibacterial activity against Gram-positive and Gram-negative bacteria. n-Butanol fraction showed maximum activity against Micrococcus leuteus with 19 mm zone of inhibition. n-Butanol fraction of Q. incana Roxb. showed immense antifungal activity against Aspergillus niger (32 mm ± 0.55) and A. flavus (28 mm ± 0.45). Similarly n-butanol fraction showed relatively good antioxidant activity with IC50 value of 55.4 ± 0.21 μg/mL. The NO scavenging activity of ethyl acetate fraction (IC50 = 23.21 ± 0.31 μg/mL) was fairly good compared to other fractions. The current study of Q. incana Roxb. suggests the presences of synergetic action of some biological active compounds that may be present in the leaves of medicinal plant. Further studies are needed to better characterize the important active constituents responsible for the antimicrobial, antioxidant and free radical scavenging activity. |
X Demographics
As of 1 July 2024, you may notice a temporary increase in the numbers of X profiles with Unknown location. Click here to learn more.
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 2 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 2 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 69 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 8 | 12% |
Student > Master | 7 | 10% |
Student > Bachelor | 6 | 9% |
Student > Postgraduate | 5 | 7% |
Researcher | 4 | 6% |
Other | 13 | 19% |
Unknown | 26 | 38% |
Readers by discipline | Count | As % |
---|---|---|
Pharmacology, Toxicology and Pharmaceutical Science | 9 | 13% |
Biochemistry, Genetics and Molecular Biology | 9 | 13% |
Agricultural and Biological Sciences | 8 | 12% |
Chemistry | 4 | 6% |
Immunology and Microbiology | 3 | 4% |
Other | 8 | 12% |
Unknown | 28 | 41% |