title: Total phenolic content and antioxidative properties of commercial tinctures obtained from some Lamiaceae plants.
abstract: The antioxidant level of commercial tinctures from three Lamiaceae plants, Salvia officinalis, Mentha piperita, and Melissa officinalis, have been determined by the Folin-Ciocalteu method, the 2.2-diphenyl-2-picrylhydracyl hydrate (DPPH) radical scavenging technique and ABTS assay. Total phenolic content was expressed as GAE (gallic acid equivalent) and ranged from 0.24 to 3.99 mg/mL. Antioxidant activity in the ABTS assay, calculated as TEAC (Trolox equivalent antioxidant capacity), ranged from 23.5 to 35.6 micromol Trolox/mL, while in the DPPH method, the EC50 value ranged from 0.04 to 0.07 mL/assay. Radical scavenging activity was correlated with total phenolic content. Correlations between ABTS and F-C methods, DPPH and F-C methods and ABTS and DPPH methods were calculated. The obtained results can be useful as additional information about the antioxidant activity of galenical preparations.
authors: Department of Pharmacognosy, Wrocław Medical University, Nankiera 1, 50-140 Wrocław, Poland. akow2@poczta.onet.pl
authors: Adam
authors: A
authors: Kowalczyk
authors: Izabela
authors: I
authors: Biskup
authors: Izabela
authors: I
authors: Fecka
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D052160:Benzothiazoles / Q000737:chemistry; D001713:Biphenyl Compounds; D002855:Chromatography, Thin Layer; D016166:Free Radical Scavengers / Q000737:chemistry / Q000494:pharmacology; D005707:Gallic Acid / Q000737:chemistry; D007202:Indicators and Reagents; D019686:Lamiaceae / Q000737:chemistry*; D031334:Melissa / Q000737:chemistry; D036142:Mentha piperita / Q000737:chemistry; D010636:Phenols / Q000032:analysis*; D010851:Picrates; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology; D027543:Salvia officinalis / Q000737:chemistry; D013451:Sulfonic Acids / Q000737:chemistry
chemical_list: D000975:Antioxidants; D052160:Benzothiazoles; D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D007202:Indicators and Reagents; D010636:Phenols; D010851:Picrates; D010936:Plant Extracts; D013451:Sulfonic Acids; C002502:2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid; D005707:Gallic Acid; C004931:1,1-diphenyl-2-picrylhydrazyl