LC-MS analysis, antioxidant and alpha-glucosidase inhibitory activities of Centaurea papposa extracts

Autor: Cheribet Mawahib, Zaabat Nabila, Souilah Nabila, Bensouici Chawki, Akkal Salah
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Bangladesh Journal of Pharmacology, Vol 14, Iss 4 (2019)
Druh dokumentu: article
ISSN: 1991-0088
DOI: 10.3329/bjp.v14i4.41246
Popis: This work aimed to ascertain the phenolic compounds and assess the antioxidant capacity and alpha-glucosidase inhibitory activity of Centaurea papposa extracts. Phenolic compounds were appraised using LC-MS technique. Moreover, antioxidant activity was investigated using DPPH, ABTS, CUPRAC and FRAP assays. In vitro alpha-glucosidase inhibitory effect was carried out. LC-MS analysis revealed the presence of 21 compounds among which 13 were phenolic acids, 6 flavonoids, 1 phenolic aldehyde and 1 benzopyrone. The ethyl acetate extract exhibited the highest activity in ferric reducing antioxidant power (FRAP) assay (IC50: 22.9 ± 2.8 µg/mL). Nevertheless the n-butanol extract was the most active in cupric reducing antioxidant capacity assay (IC50: 3.1 ± 0.1 µg/mL). A significant alpha-glucosidase inhibitory activity was displayed by dichloromethane extract (IC50: 227.6 ± 4.4 µg/mL). Video Clip of Methodology: Cupric reduction antioxidant capacity: 1 min 47 sec: Full Screen Alternate
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