Antioxidant properties and phenolic composition of wood betony (Betonica officinalis L., syn. Stachys officinalis L.)

作者：Sliumpaite I; Venskutonis P R^*; Murkovic M; Ragazinskiene O

来源：Industrial Crops and Products, 2013, 50: 715-722.

DOI：10.1016/j.indcrop.2013.08.024

• Wood betony
• Stachys officinalis
• Radical scavenging capacity
• Total phenolic content
• Phytochemical composition
• Chlorogenic acid
• Phenylethanoid glycosides

Antioxidant properties and composition of phenolic active constituents in wood betony (Stachys officinalis) extracts, successively isolated with acetone and methanol, were studied by the batch and the on-line radical scavenging assays. The content of total phenolics was higher in acetone extract (the yield 5.6%) by 26% than in methanol extract (the yield 18.6%), however the latter extract was stronger radical scavenger in DPPH center dot and ABTS(+center dot) assays: 714 +/- 83 mu M vs 558 +/- 33 mu M trolox equivalents per g of dry extract. The main compounds possessing antioxidant activity in the extracts of woody betony assessed by the on-line HPLC-DPPH center dot method and preliminary identified by HPLC/UV/MS and HPTLC analysis were chlorogenic acid, phenylethanoid glycosides and hydroxycinnamic acid derivative.

• 出版日期2013-10