Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/39695
Title: Phenolic profile and antioxidant activity of crude extracts from microalgae and cyanobacteria strains
Authors: Jerez-Martel, I.
García-Poza, Sara
Rodríguez-Martel, G.
Rico, Milagros 
Afonso-Olivares, Cristina 
Gómez-Pinchetti, Juan Luis 
UNESCO Clasification: 251002 Oceanografía química
Keywords: Performance Liquid-Chromatography
Oxidative Stress
Biological-Activities
Plant Polyphenols
In-Vitro
Algae
Fractions
Capacity
Quality
Preservation
Issue Date: 2017
Journal: Journal of Food Quality 
Abstract: Aqueous and methanolic extracts of several microalgae (Ankistrodesmus sp., Spirogyra sp., Euglena cantabrica, and Caespitella pascheri) and cyanobacteria (Nostoc sp., Nostoc commune, Nodularia spumigena, Leptolyngbya protospira, Phormidiochaete sp., and Arthrospira platensis) were screened for their radical scavenging activity against the stable radical 1,1-diphenyl-2-picrylhydrazyl. Despite the fact that water was a more efficient solvent to extract greater amount of extractable substances, it seems that methanol was more efficient to extract a selected group of compounds with a higher antioxidant activity. In addition, the identification of 4 simple phenolics (gallic, syringic, protocatechuic, and chlorogenic acids) and the flavonoids (+) catechin and (−) epicatechin was carried out by using reverse phase high performance liquid chromatography. The strain Euglena cantabrica showed the highest concentration of phenolic compounds, particularly gallic and protocatechuic acids (5.87 and 2.97mg per gram of dried biomass, resp.). Aqueous and methanolic extracts of microalgae Euglena cantabrica also exhibited the highest antioxidant activity, probably due to the presence of the high contents of phenolics.
URI: http://hdl.handle.net/10553/39695
ISSN: 0146-9428
DOI: 10.1155/2017/2924508
Source: Journal of Food Quality[ISSN 0146-9428],v. 2017 (2924508)
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