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

Patricia @ Patricia Clementina Matanjun and Suhaila Mohamed and Noordin Mohamed Mustapha and Kharidah Muhammad and Ming, Cheng Hwee (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


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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.

Item Type: Article
Keyword: Seaweeds, Antioxidant activity, TEAC, FRAP, Phenolics, North Borneo waters
Subjects: S Agriculture > SH Aquaculture. Fisheries. Angling > SH1-691 Aquaculture. Fisheries. Angling > SH201-399 Fisheries > SH393 Seagrasses
Department: SCHOOL > School of Food Science and Nutrition
Depositing User: ADMIN ADMIN
Date Deposited: 07 Sep 2011 10:42
Last Modified: 19 Oct 2017 10:32

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