:: Volume 18, Issue 3 (7-2019) ::
IJFS 2019, 18 Back to browse issues page
Chemical composition antioxidant and antimicrobial activities of fucoidan extracted from two species of brown seaweeds (Sargassum ilicifolium and Sargassum angustifolium) around Qeshm Island
M. Kordjazi , Y. Etemadian, B. Shabanpour, P. Pourashouri
Faculty of Fisheries Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. , moazamehkordjazi@gmail.com
Abstract:   (501 Views)
The chemical compositions, antioxidant and antimicrobial properties of fucoidan extracted from Sargassum ilicifolium and Sargassum angustifolium were investigated. The results showed that these seaweeds were characterized by an acceptable level of minerals and proteins. The fatty acid profile was dominated by the palmitic acid, which represents about 37.44±0.01% and 23.05±0.01% of the total fatty acids, followed by oleic acid (13.83±0.01% and 45.30±0.01%) for S. ilicifoliumand S. angustifolium, respectively. Swelling capacity, water holding capacity and oil holding capacity were varied in two different temperatures (25C and 37C).The antioxidant activities of fucoidan including DPPH, superoxide-hydroxyl radical scavenging, chelating ability and reducing power were considerable. The correlation of sulfate and phenol contents with scavenging superoxide radical ability, chelating ability and reducing power was positive. The antibacterial activity was evaluated by disc diffusion method against Bacillus subtilis and Staphylococcus aureus (gram positive bacteria) and Escherichia coli and Salmonella enteritidis (gram negative bacteria). There were no positive results against gram negative bacteria. In the concentration of 5 mg ml-1 small clear inhibition zones was observed against B. subtilis and S.aureus. On the basis of obtaining results from antioxidant activities, fucoidanis suggested as potential natural and safe antioxidant agents in the nutraceutical industry.
Keywords: Fucoidan, Antioxidant, Antimicrobial, Brown seaweed, Sargassum.
Full-Text [PDF 491 kb]   (219 Downloads)    
Type of Study: Orginal research papers | Subject: Biotechnology
Received: 2017/03/28 | Accepted: 2017/05/27

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Volume 18, Issue 3 (7-2019) Back to browse issues page