Antioxidant, Thrombolytic, Antimicrobial and Cytotoxic Activities of Flavonoids Isolated from the Root Bark of Pongamia pinnata

Antioxidant, thrombolytic, antimicrobial and brine shrimp

Authors

  • Seagufta Afrin Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Dhaka Dhaka-1000, Bangladesh
  • Md Abdul Muhit Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka Dhaka-1000, Bangladesh
  • Md Hossain Sohrab Pharmaceutical Sciences Research Division, BCSIR Laboratories, Dr. Quadrat-I-Khuda Road Dhanmondi, Dhaka-1205, Bangladesh
  • Choudhury Mahmood Hasan Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Dhaka Dhaka-1000, Bangladesh
  • Monira Ahsan Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Dhaka Dhaka-1000, Bangladesh

DOI:

https://doi.org/10.3329/dujps.v19i1.47812

Keywords:

Pongamia pinnata, antioxidant, thrombolytic, pongachromene, kanugin, karanjin, demethoxykanugin and dimethoxypongapine

Abstract

The crude methanolic extract of the root bark of Pongamia pinnata was taken into consideration to isolate secondary metabolites. A total six known natural compounds were separated and purified by various chromatographic techniques and five isolates were identified as flavonoid derivatives such as pongachromene (1), kanugin (2), karanjin (3), demethoxykanugin (4), dimethoxypongapine (5) and the other is a triterpenoid (6). The pure compounds as well as petroleum ether, dichloromethane and ethyl acetate soluble fractions of crude methanolic extract were evaluated for bioactivities using established methods. In vitro antioxidant activity was studied by DPPH radical scavenging method using butylated hydroxyl anisole as standard. Among the pure compounds, kanugin and pongachromene showed significant antioxidant activity with the IC50 values of 27.20 ± 0.39 μg/mL and 43.53 ± 0.63 μg/ml, respectively as compared to the standard (23.87 ± 0.09 μg/ml), whereas karanjin, demethoxykanugin and dimethoxypongapine demonstrated moderate antioxidant activity. Mild thrombolytic activity was observed by different fractions with clot lysis ranging from 18.49 to 29.35% as compared to standard streptokinase (79.12%). The different solvent fractions and pure isolates showed very mild antimicrobial activity with zone of inhibition of 7.5 - 10.0 mm against the tested microorganisms using azithromycin and ketoconazole as standards. In the brine shrimp lethality bioassay, the dichloromethane, ethyl acetate, and methanol soluble fractions revealed significant lethality with LC50 values of 0.67 ± 0.05, 0.61 ± 0.13 and 0.56 ± 0.10 μg/ml, respectively as compared to standard tamoxifen (LC50 value 0.34 ± 0.09 μg/ml).

Dhaka Univ. J. Pharm. Sci. 19(1): 1-8, 2020 (June)

Downloads

Download data is not yet available.
Abstract
354
PDF
350

Downloads

Published

2020-06-26

How to Cite

Afrin, S., Muhit, M. A., Sohrab, M. H., Hasan, C. M., & Ahsan, M. (2020). Antioxidant, Thrombolytic, Antimicrobial and Cytotoxic Activities of Flavonoids Isolated from the Root Bark of Pongamia pinnata: Antioxidant, thrombolytic, antimicrobial and brine shrimp. Dhaka University Journal of Pharmaceutical Sciences, 19(1), 1–8. https://doi.org/10.3329/dujps.v19i1.47812

Issue

Section

Articles