Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomass

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016-12

Autores

F. Xavier Malcata (Autor) FEUP; Katkam N. Gangadhar (Autor) Outra; Hugo Pereira (Autor) Outra; Maria João Rodrigues (Autor) Outra; Luísa Custódio (Autor) Outra; Luísa Barreira (Autor) Outra; João Varela (Autor) Outra

Revista

Título: Open Chemistry

Vol. 14 Nº 1

Páginas: 299-307

ISSN: 2391-5420

Editora: Walter De Gruyter

Indexação

ISI Web of Knowledge

ISI Web of Science

Classificação Científica

CORDIS: Ciências Tecnológicas

FOS: Ciências da engenharia e tecnologias

Projetos Associados

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Outras Informações

DOI: 10.1515/chem-2016-0029

Abstract (EN): The present work aimed to determine the antioxidant, metal chelating and neuroprotective potential of the unsaponifiable matter (UM) of Tetraselmis chuii to be applied to a biorefinery setting. The UM obtained via saponification from crude lipids extracted from microalgal wet biomass showed a radical scavenging activity (RSA) towards the DPPH radical of 90.7±1.3% and 57.1±1.2% at a concentration of 10 and 5 mg/mL, respectively. The UM fraction also displayed metal chelating capacity at a concentration of 5 mg/mL: 58.5±1.4% and 50.9±4.0% for copper and iron, respectively. The chemical characterization of the UM revealed significant levels of total phenolics (TPC, 13.61 mg GAE/g) and carotenoids (2.45 mg/g of ß-carotene, lutein and violaxanthin). Overall, the separation of the UM containing high value metabolites might significantly upgrade the total wet biomass value in a biorefinery, allowing the exploitation of a stream with relevant antioxidant and metal chelating activities.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9