In vitro studies to assess the antidiabetic, anti-cholinesterase and antioxidant potential of Spergularia rubra

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Juliana Vinholes (Autor) Outra; Clara Grosso (Autor) Outra; Paula B Andrade (Autor) FFUP; Angel Gil Izquierdo (Autor) Outra; Patricia Valentao (Autor) FFUP; de Pinho, PG (Autor) FFUP; Federico Ferreres (Autor) Outra

Revista

Título: Food Chemistry

Vol. 129 Nº 2

Páginas: 454-462

ISSN: 0308-8146

Editora: Elsevier

Indexação

ISI Web of Knowledge - 83 Citações

ISI Web of Science

Scopus - 97 Citações

Classificação Científica

CORDIS: Ciências da Saúde > Ciências farmacológicas > Farmacognosia

FOS: Ciências agrárias > Outras ciências agrárias

Outras Informações

ID Authenticus: P-002-JN6

DOI: 10.1016/j.foodchem.2011.04.098

Resumo (PT): Spergularia rubra is distributed all over the world, being its infusion used as diuretic. In spite of its large use, the antidiabetic, anti-cholinesterase and antioxidant activities of this species have not been assessed and its chemical composition is scarcely known. In the work herein a hydromethanolic extract was studied. Thirty-six phenolic compounds were determined by HPLC-DAD, comprising non-acylated C-glycosyl flavones (38%), C-glycosyl flavones acylated with aromatic acids (36%), C-glycosyl flavones acylated with aliphatic acids (13%) and 10% corresponded to C-glycosyl flavones with a mixed acylation. Organic acids (oxalic, citric, malic, quinic and fumaric acids) and fatty acids (azelaic, myristic, palmitic, linoleic, linolenic and stearic acids) are described for the first time. Their determination by HPLC-UV and GC-IT–MS allowed finding concentrations of 192.15 and 34.87 g/kg, respectively. The extract showed a dose-dependent response against DPPH, superoxide and nitric oxide radicals. The same effect was observed in the a-glucosidase inhibitory assay and against acetylcholinesterase and butyrylcholinesterases. The bioactivities observed may be due, at least partially, to the presence of the different metabolites determined in the present study. The results suggest that the dried extract of S. rubra may be interesting for incorporation in pharmaceutical preparations for human health, since it can suppress hyperglycaemia and inhibit cholinesterases, and or as food additive due to its antiradical activity. <br> <br> Keywords: Spergularia rubra Metabolic profile Antioxidant activity a-Glucosidase inhibition Cholinesterases inhibition <br> <br> <a target="_blank" href="http://www.sciencedirect.com/science/journal/03088146/129/2"> Texto integral</a> <br> <br>

Abstract (EN): Spergularia rubra is distributed all over the world, being its infusion used as diuretic. In spite of its large use, the antidiabetic, anti-cholinesterase and antioxidant activities of this species have not been assessed and its chemical composition is scarcely known. In the work herein a hydromethanolic extract was studied. Thirty-six phenolic compounds were determined by HPLC-DAD, comprising non-acylated C-glycosyl flavones (38%), C-glycosyl flavones acylated with aromatic acids (36%), C-glycosyl flavones acylated with aliphatic acids (13%) and 10% corresponded to C-glycosyl flavones with a mixed acylation. Organic acids (oxalic, citric, malic, quinic and fumaric acids) and fatty acids (azelaic, myristic, palmitic, linoleic, linolenic and stearic acids) are described for the first time. Their determination by HPLC-UV and GC-IT-MS allowed finding concentrations of 192.15 and 34.87 g/kg, respectively. The extract showed a dose-dependent response against DPPH, superoxide and nitric oxide radicals. The same effect was observed in the cc-glucosidase inhibitory assay and against acetylcholinesterase and butyrylcholinesterases. The bioactivities observed may be due, at least partially, to the presence of the different metabolites determined in the present study. The results suggest that the dried extract of S. rubra may be interesting for incorporation in pharmaceutical preparations for human health, since it can suppress hyperglycaemia and inhibit cholinesterases, and or as food additive due to its antiradical activity.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9