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Journal of Pharmacognosy and Phytochemistry

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Journal of Pharmacognosy and Phytochemistry

Vol. 3, Issue 1 (2014)

Secondary Metabolites and Antioxidant Activity of the Crude Leaf Extract of Bacopa monniera (L.) Pennel. and Coccinia grandis (L.) J. Voigt

Author(s): A. N. M. Alamgir, Ataur Rahman and Minhajur Rahman
Abstract: Leaf extracts of Bacopa monniera (L.) Pennel. and Coccinia grandis (L.) J. Voigt. were assessed for their secondary metabolites content and antioxidant activities, which were measured by spectrophotometer using 2, 2- diphenyl-1- picrylhydrazyl (DPPH) radical. Antioxidant activity was dose dependent and showed inverse relation with decoloration of DPPH from purple to yellow due to its reduction by antioxidants. The IC50 values of the antioxidants were determined by linear regression analysis. Results of the antioxidant activities of crude leaf extracts were discussed in relation to the presence of secondary metabolites and compared with standard antioxidant ascorbic acid.
Dose dependent decolorization of DPPH from purple to yellow (L→R) dependent on the degree of reduction (DPPH→DPPH-H) by antioxidant (ascorbic acid or leaf extract).
Fig.: Dose dependent decolorization of DPPH from purple to yellow (L→R) dependent on the degree of reduction (DPPH→DPPH-H) by antioxidant (ascorbic acid or leaf extract).
Pages: 226-230  |  1064 Views  12 Downloads
How to cite this article:
A. N. M. Alamgir, Ataur Rahman and Minhajur Rahman . Secondary Metabolites and Antioxidant Activity of the Crude Leaf Extract of Bacopa monniera (L.) Pennel. and Coccinia grandis (L.) J. Voigt. Journal of Pharmacognosy and Phytochemistry. 2014; 3(1): 226-230.
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