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Antioxidant potential of Artemisia argentea L'Hér alcoholic extract and its relation with the phenolic composition
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Orientador(es)
Resumo(s)
Artemisia argentea, known as losna or Madeira wormwood is used as aperitif drink with tonic effects. A
reversed-phase high-performance liquid chromatography method (RP-HPLC) coupled with diode-array
detection (DAD) and electrospray ionization mass spectrometry (ESI/MS) was used for the separation/
characterization of phenolic compounds in A. argentea. A wide variety of components was found, mainly
flavonoids (O- and C-glycosylated) and hydroxycinnamic acids derivatives. Five saponins, an uncommon type
of compound in Artemisia species, were reported. Quantification of caffeoylquinic acids (CQA) was performed
and 5-O-CQA and 3,5-O-diCQA were the major compounds (ca. 300 mg/100 g dried plant). Total phenolic
content (TPC) and total flavonoid content (TFC) were established and four assays were used to measure the
antioxidant capacity of the plant, revealing a high radical scavenging capacity and a weak reducing potential.
Unlike other Artemisia subspecies, A. argentea is totally free of harmful components such as thujene, thujone
or artemisia ketone.
Descrição
Palavras-chave
Hydroxycinnamic acids Flavonoids HPLC-DAD-ESI/MSn Antioxidant Artemisia . Faculdade de Ciências Exatas e da Engenharia
Contexto Educativo
Citação
Gouveia, S., & Castilho, P. C. (2011). Antioxidant potential of Artemisia argentea L'Hér alcoholic extract and its relation with the phenolic composition. Food Research International, 44(6), 1620-1631.
Editora
Canadian Institute of Food Science and Technology (CIFST)