Antimicrobial property of crude ethanolic extract from sargassum crassifolium J.G. Agardh

Issue Date

4-2013

Abstract

Marine bioactive compounds have become popular due to their biomedical importance. This study focuses on exploring the antimicrobial property of the crude ethanolic extract from the brown seaweed Sargassum crassifolium J.G. Agardh collected from the coastal waters of Polillo Island, Quezon Province, Philippines. Crude ethanolic extract from fresh (F) and dried (D) samples of S. crassifolium produced two (2) fractions (Fl= liquid fraction; F2 = solid lyophilized fraction). Phytochemical screening of the four (4) fractions revealed the presence of alkaloid, glycoside, polyphenol, saponin and volatile oil. Anthraquinone, flavonoid and tannin were not detected in the crude ethanolic extract. Antimicrobial susceptibility testing by disk-diffusion assay showed that only the Gram-positive bacterium Staphylococcus aureus was susceptible to the crude extract. The Gram-negative bacterium Escherichia colt as well as the non-filamentous and filamentous fungi Candida albicans and Aspergillus niger, respectively, were found to be resistant. The highest antimicrobial activity against S. aureus was observed in FF1 (%RIZ = 39.40 ± 1.13) while the lowest was observed in DF2 (%RIZ = 29.51 ± 4.47).

Source or Periodical Title

Asian Journal of Microbiology, Biotechnology and Environmental Sciences

ISSN

0972-3005

Volume

16

Issue

3

Page

471-474

Document Type

Article

Physical Description

illustration, table, graph, diagram

Language

English

Subject

Antimicrobial, Bioactive compounds, Crude extract, Photochemical, Sargassum

Digital Copy

yes

Link to Full Text

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