title: Antioxidant activity and total phenolic content in Cirsium five species from north-east region of Poland.
abstract: Methanolic extracts from inflorescences and leaves of five Cirsium species: C. arvense, C. oleraceum, C. palustre, C. rivulare and C. vulgare and CHCl3, Et2O, EtOAc, n-BuOH fractions obtained from those extracts were investigated for their antioxidant activity. The antioxidant activity measurement, expressed as Total Antioxidant Status, ranged from 0.98 to 2.71 mM/l. The total phenolic content of the samples varied from 12 to 804 mg/g. There was a positive correlation between the total phenolic content and antioxidant activity for MeOH extracts and EtOAc fractions (R2=0.95, 0.8 respectively).
authors.affiliation: Department of Pharmacognosy, Medical University of Bialystok, Mickiewicza 2A St., 15-089 Bialystok, Poland. nazaruk@amb.edu.pl
authors.forename: J
authors.initials: J
authors.lastname: Nazaruk
mesh_terms: D000975:Antioxidants / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D002839:Chromans / Q000737:chemistry; D031180:Cirsium; D006801:Humans; D008519:Medicine, Traditional; D010636:Phenols / Q000008:administration & dosage / Q000494:pharmacology / Q000627:therapeutic use; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D011044:Poland
chemical_list: D000975:Antioxidants; D002839:Chromans; D010636:Phenols; D010936:Plant Extracts; C010643:6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid