title: Total phenolic content, antioxidant and antimicrobial activities of some medicinal plants.
abstract: Crude extracts from Inula aucherana, Fumaria officinalis, Crocus sativus, Vicum album, Tribulus terestris, Polygonatum multiflorum, Alkanna tinctoria and Taraxacum officinale were screened for their in vitro antioxidant and antimicrobial properties. Total phenolic content of extracts from these plants were also determined. beta-carotene bleaching assay and Folin-Ciocalteu reagent were used to determine total antioxidant activity and total phenols of plant extracts. Antimicrobial activity was determined by using disk diffusion assay. Antioxidant activity and total phenolic content varied among plants used and Viscum album and Crocus sativus had the highest antioxidant (82.23%) and total phenolic content (42.29 mgGAE/g DW), respectively. The methanol extracts from Vicum album and Alkanna tinctoria showed antimicrobial activity against 9 out of 32 microorganisms, however extract from Inula aucherana showed antimicrobial activity against 15 out of 32 microorganisms. The results provided evidence that the studied plant might indeed be potential sources of natural antioxidant and antimicrobial agents.
authors.affiliation: Department of Food Engineering, Ataturk University, 25240 Erzurum, Turkey. memnunese@hotmail.com
authors.forename: Memnune
authors.initials: M
authors.lastname: Sengul
authors.forename: Hilal
authors.initials: H
authors.lastname: Yildiz
authors.forename: Neva
authors.initials: N
authors.lastname: Gungor
authors.forename: Bulent
authors.initials: B
authors.lastname: Cetin
authors.forename: Zeynep
authors.initials: Z
authors.lastname: Eser
authors.forename: Sezai
authors.initials: S
authors.lastname: Ercisli
mesh_terms: D000890:Anti-Infective Agents / Q000302:isolation & purification / Q000494:pharmacology*; D000975:Antioxidants / Q000302:isolation & purification / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects / Q000254:growth & development; D019684:Magnoliopsida / Q000737:chemistry; D008826:Microbial Sensitivity Tests; D010636:Phenols / Q000302:isolation & purification / Q000494:pharmacology*; D035261:Plant Components, Aerial; D010936:Plant Extracts / Q000494:pharmacology; D010946:Plants, Medicinal; D013053:Spectrophotometry
chemical_list: D000890:Anti-Infective Agents; D000975:Antioxidants; D010636:Phenols; D010936:Plant Extracts