Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/1435
Título: Antioxidant activity of macroalgae from the Azores
Autor: Paiva, Lisete S.
Patarra, Rita F.
Neto, Ana I.
Lima, Elisabete M. C.
Baptista, José A. B.
Palavras-chave: DPPH
Functional Food
Macroalgae Screening
Radical Scavenging Activity
Data: 2012
Editora: Universidade dos Açores
Citação: "ARQUIPÉLAGO. Life and Marine Sciences". ISSN 0873-4704. Nº 29 (2012): 1-6
Relatório da Série N.º: Ciências Biológicas e Marinhas = Life and Marine Sciences;29
Resumo: Free radical scavenging activity (FRSA) was studied to determine the antioxidant activity of 8 common macroalgae species found in the Azores. Species under study were Porphyra sp., Osmundea pinnatifida, Pterocladiella capillacea, Sphaerococcus coronopifolius and Gelidium microdon, from Rhodophyta; Ulva compressa and Chaetomorpha pachynema, from Chlorophyta and Fucus spiralis from Phaeophyta.The antioxidant activity was evaluated in methanolic extract by a decolourisation solution test of 2,2-diphenyl-1-picrylhydrazyl (DPPH), used as a stable radical. The methanolic extracts were obtained from dried biomass by sequential extractions, attaining a final concentration of 2 mg.mL-1. The FRSA values ranged from 19.54% for S. coronopifolius to 60.05% for F. spiralis with standard deviation (SD) varying between 1.41% and 6.80%. Results indicated that the studied seaweeds are a very promising source of biological active compounds with antioxidante properties. The seaweeds were collected in the Azorean islands where seawater pollution levels are low. Consequently, these seaweeds represent a valuable and good source of antioxidante material with superior beneficial effects on human health.
Peer review: yes
URI: http://hdl.handle.net/10400.3/1435
ISSN: 0873-4704
Aparece nas colecções:ARQ - LMS - Número 29
DBIO - Artigos em Revistas Nacionais / Articles in National Journals

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