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Antioxidant activities and phenolics content of eight species of seaweeds from north Borneo


Citation

Matanjun, Patricia and Mohamed, Suhaila and Mohamed Mustapha, Noordin and Syed Muhammad, Sharifah Kharidah and Cheng, Hwee Ming (2008) Antioxidant activities and phenolics content of eight species of seaweeds from north Borneo. Journal of Applied Phycology, 20 (4). pp. 367-373. ISSN 0921-8971; ESSN: 1573-5176

Abstract / Synopsis

The antioxidant activity of eight edible species of Malaysian North Borneo seaweeds obtained from Sabah waters (Kudat, Tanjung Aru and Semporna) consisting of three red seaweeds (Eucheuma cottonii, E. spinosum and Halymenia durvillaei), two green seaweeds (Caulerpa lentillifera and C. racemosa) and three brown seaweeds (Dictyota dichotoma, Sargassum polycystum and Padina sp.) were determined. Methanol and diethyl ether were used as extraction solvent. The antioxidant activities were determined by two methods, TEAC (trolox equivalent antioxidant capacity) and FRAP (ferric reducing antioxidant power) assays. The total phenolic content of the extract was determined according to the Folin–Ciocalteu method and results were expressed as phloroglucinol equivalents. The methanolic extracts of green seaweeds, C. lentillifera and C. racemosa, and the brown seaweed, S. polycystum showed better radical-scavenging and reducing power ability, and higher phenolic content than the other seaweeds. The TEAC and FRAP assays showed positive and significantly high correlation (R 2 = 0.89). There was a strong correlation (R 2 = 0.96) between the reducing power and the total phenolic content of the seaweeds methanolic dry extracts. These seaweeds could be potential rich sources of natural antioxidants.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Food Science and Technology
Faculty of Veterinary Medicine
DOI Number: 10.1007/s10811-007-9264-6
Publisher: Springer
Keywords: Seaweeds; Antioxidant activity; TEAC; FRAP; Phenolics; North Borneo waters
Depositing User: Samsida Samsudin
Date Deposited: 10 Jun 2010 17:36
Last Modified: 22 Nov 2016 15:21
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1007/s10811-007-9264-6
URI: http://psasir.upm.edu.my/id/eprint/7230
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