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

• Type: Article in International Scientific Journal
• Date: 2011

Authors

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

Journal

Title: Food Chemistry

Vol. 129 No. 2

Pages: 454-462

ISSN: 0308-8146

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 83 Citations

ISI Web of Science

Scopus - 97 Citations

Scientific classification

CORDIS: Health sciences > Pharmacological sciences > Pharmacognosy

FOS: Agrarian Sciences > Other Agrarian Sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9