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Title: Bioactive Metabolites of Microalgae from Canary Islands for Functional Food and Feed Uses
Authors: Santiago Díaz, Paula 
Rico Santos, Milagros 
Rivero Rosales, Argimiro 
Santana Casiano, Juana Magdalena 
UNESCO Clasification: 241707 Algología (ficología)
339001 Biotecnología de microalgas
Keywords: Amino Acids
Radical Scavenging Activity
Issue Date: 2022
Project: TOPFeproject(CTM2017-83476-P)given by the MinisteriodeEconomíay Competitividadfrom Spain,and from theUniversidadde Las Palmasde Gran Canaria(PIFULPGC-2019)
Journal: Chemistry and Biodiversity 
Abstract: Three freshwater microalgae (Spirogyra sp., Cosmarium sp., and Cosmarium blytii) collected from several locations in Gran Canaria have been studied to explore their potential as a novel source of bioactive compounds for biotechnological applications. Soluble carbohydrates were quantified after extraction with 3 M HCl at 100 °C, ranging from 35.8 to 43.3 %, and with water at room temperature, ranging from 19 to 22.8 %. Amino acids glutamic acid, proline and aspartic acid were quantified by RP-HPLC. Glutamic acid was the most abundant, ranging from 12.2 to 3.63 mg g−1 of dry biomass. Cosmarium blytii was the richest sample in amino acids (24.02 mg g−1 of dry weight). In addition, Cosmarium blytii and Spyrogira sp. exhibited higher radical scavenging activity (RSA) against 1,1-diphenyl-2-picrylhydrazyl (DPPH) than that of the synthetic antioxidant butylhydroxytoluene (BHT), commonly used as food additive. These results show a great potential of these microalgae for exploitation in the food, feed and pharmaceutical industries.
ISSN: 1612-1872
DOI: 10.1002/cbdv.202200230
Source: Chemistry and Biodiversity [ISSN 1612-1872], v. 19(9)
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