Investigation of phenolic compounds and antioxidant activity of Teucrium polium L. decoction and infusion

Abstract

In present study, we report phenolic compounds and antioxidant activity of decoction and infusion of T. polium. The quantitative amounts of the phenolic contents were determined by LC-MS/MS. The main compounds and amounts were determined as follow for decoction; fumaric acid, luteolin-7-O-glucoside, luteolin-5-O-glucoside, and pelargonin (2060.1; 1167.0; 835.2; 829.9 mg/kg dried herba, respectively). For the infusion sample main compounds and amounts were as follow; fumaric acid, luteolin-7-O-glucoside, pelargonin, and luteolin-5-O-glucoside (1456.2; 431.1; 312.5; 278.4 mg/kg dried herba, respectively). The antioxidant activities were determined based on three methods: 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging, ?-carotene linoleic acid assays and cupric (Cu2+) ion reducing power assay (CUPRAC). For all the activity assays, infusion and decoction samples of the T. polium showed good activity.