Antioxidant and antimicrobial activity of a mangrove plant Avicennia marina (Forsk.) Pooja Moteriya, Ashish Dalsaniya, Sumitra Chanda*
Objective: To evaluate the antioxidant and antimicrobial potential of different parts (leaf, stem
and pneumatophore) of a mangrove plant Avicennia marina (Forsk.) Vierh (Avicenniaceae).
Methods: The extraction was done by cold percolation method using solvents of hexane,
ethyl acetate, acetone, methanol and water. Total phenol and flavonoid content were measured
by Folin-Ciocalteu’s reagent and aluminium chloride colorimetric method respectively. The
antioxidant activity was evaluated using antioxidant assays of 2,2-diphenyl-1-picrylhydrazyl
free radical scavenging activity, superoxide radical scavenging assay, 2,2’-azino-bis-(3-ethyl)
benzothiazoline-6-sulfonic acid, ferric reducing antioxidant power and reducing capacity
assessment. The antibacterial activity was done by agar well diffusion method against four
Gram-positive, four Gram-negative bacteria and four fungi.
Results: Different antioxidant assays showed different levels of activity in different parts and
different solvent extracts. Overall, acetone extract of stem showed the best antioxidant activity.
The Gram-positive bacteria were more susceptible than Gram-negative bacteria and fungi.
Conclusions: The results indicated extract of Avicennia marina can be used as a promising
source of natural antioxidant.
Document Type: Research Article
Affiliations: Phytochemical, Pharmacological and Microbiological Laboratory, Department of Biosciences, Saurashtra University, Rajkot 360005, Gujarat, India
Publication date: 01 January 2015
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