Phenolic profile and antioxidant activity of Coleostephus myconis (L.) Rchb.f.: An underexploited and highly disseminated species

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Bessada, SMF (Author) Other; Barreira, JCM (Author) Other; Barros, L (Author) Other; Ferreira, ICFR (Author) Other; Beatriz B P P Oliveira (Author) FFUP

Journal

Title: Industrial Crops and Products

Vol. 89

Pages: 45-51

ISSN: 0926-6690

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 77 Citations

Scopus - 159 Citations

Other information

Authenticus ID: P-00K-E2C

DOI: 10.1016/j.indcrop.2016.04.065

Abstract (EN): Coleostephus myconis (L) Rchb.f. (Asteraceae) is a species with ruderal growth and persistence in abandoned soils, being characterized for its plentiful yellow flowering between March and August. Despite its botanical relevance, C. myconis had never been studied neither for its antioxidant activity, nor individual phenolic compounds. Herein, the antioxidant activity of different botanical parts: stems and leaves (green parts), floral buds, flowers in anthesis and senescent flowers, was studied in selected extracts (ethanol, ethanol:water 1:1 and water) through different chemical and biochemical assays. In addition, the phenolic profiles of the hydroethanolic extracts of each botanical part were also characterized by liquid chromatography with diode array detection and electrospray ionization tandem mass spectrometry (LC-DAD-ESI/MSn). The antioxidant activity was significantly modulated by the extract type, with the hydroethanolic extracts showing the highest antioxidant activity, especially those obtained from the senescent flowers and floral buds. The phenolic profiles were the same for all flowering stages (with quantitative differences), but that characterized in the green parts were quite different. Floral buds gave the highest contents in phenolic compounds, mainly due to the contribution of 3,5-O-dicaffeoylquinic acid and myricetin-O-methyl-hexoside. Overall, C myconis showed an interesting potential to be included in different industrial applications.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7