Antioxidative Phenolic Compounds from Sage (<i>Salvia officinalis</i>)
Mingfu Wang(National Pingtung University of Science and Technology), Jiangang Li(National Pingtung University of Science and Technology), Meera Rangarajan(Rutgers, The State University of New Jersey), Yu Shao(Rutgers, The State University of New Jersey), Edmond J. LaVoie(National Pingtung University of Science and Technology), Tzou‐Chi Huang(Rutgers, The State University of New Jersey), Chi‐Tang Ho(National Pingtung University of Science and Technology)
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Abstract
Ten phenolic compounds were isolated from a butanol fraction of sage extracts. Their structures were determined by spectral methods (NMR, MS, IR). Among them, a novel compound, 4-hydroxyacetophenone-4-O-β-d-apiofuranosyl-(1→6)-O-β-d-glucopyranoside, was identified. Two test systems, DPPH free radical scavenging activity and radical cation ABTS•+ scavenging activity, were used to evaluate their antioxidant activity. The most active compounds were found to be rosmarinic acid and luteolin-7-O-β-glucopyranoside. Keywords: Sage; Salvia officinalis; phenolic compounds; antioxidant activity
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