In vitro screening of antimicrobial activity of extracts of some macroalgae collected from Abu-Qir bay Alexandria, Egypt
Year: 2010
Type: article
Abstract: Ethanol, methanol and acetone extracts of nine marine macroalgae ( Rhodophyta, Chlorophyta and Phaeophyta ) from Abu-Qir bay (Alexandria, Egypt) were evaluated for antimicrobial activity by agar well diffusion methods against pathogenic microbes ( Bacillus subtilis, Staphylococcus aureus and Streptococcus aureus as gram-positive bacteria, and (E scherichia coli, Salmonella typhi and Klebsiella pneumoniae as gram-negative bacteria) and one yeast strain Candida albicans . All pathogenic microorganisms were obtained from Culture Collection of Botany Department, Faculty of Science, Tanta University. The best results were obtained by acetone extracts with inhibition activity (36.7%), followed by the methanol extracts (32.9%), and then ethanol extracts (30.2%) for all tested microorganisms. The tested species of Chlorophyta were the most active followed by Rhodophyta and Phaeophyta . The most active seaweeds was Ulva fasciata (chlorophyceae) against all tested microorganisms. Key words: Seaweeds, antimicrobial activity, extracts, pathogenic microbes.
Source: AFRICAN JOURNAL OF BIOTECHNOLOGY
Language: English
Subfield: Aquatic Science
Domain: Life Sciences
Open Access status: diamond
OpenAlex ID: W2142406457