Springer Iranian Journal of Science 2731-8095 39 4 2015 12 15 An investigation on antioxidant and antimicrobial activities of four Inula helenium L. taxa 473 483 3398 10.22099/ijsts.2015.3398 EN S. Albayrak Department of Biology, Science Faculty, Erciyes University, 38039, Kayseri, Turkey A. E. Korkmaz Cinar Department of Biology, Science Faculty, Erciyes University, 38039, Kayseri, Turkey M. Y. Paksoy Department of Environmental Engineering, Engineering Faculty, Tunceli University, Tunceli, Turkey A. Aksoy Department of Biology, Science Faculty, Akdeniz University, 07058, Antalya, Turkey Journal Article 2014 07 02   <span style="font-size: xx-small;">The antioxidant activities of methanol (ME), ethanol (EE), water (WE) and ethyl acetate (EAE) extracts of four </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">Inula helenium </span></span></em><span style="font-size: xx-small;">L. taxa (</span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">I. helenium </span></span></em><span style="font-size: xx-small;">ssp. </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">orygalis </span></span></em><span style="font-size: xx-small;">(Boiss.) Grierson, </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">I. helenium </span></span></em><span style="font-size: xx-small;">ssp. </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">pseudohelenium </span></span></em><span style="font-size: xx-small;">Grierson, </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">I. helenium </span></span></em><span style="font-size: xx-small;">ssp. </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">turcarasemosa </span></span></em><span style="font-size: xx-small;">Grierson and </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">I. helenium </span></span></em><span style="font-size: xx-small;">ssp. </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">vanensis </span></span></em><span style="font-size: xx-small;">Grierson) were investigated. The phosphomolybdenum assay, β-carotene–linoleate bleaching and DPPH radical scavenging activity were used to evaluate the antioxidant capacity. The total phenolic contents determined by Folin-Ciocalteu assay of the extracts ranged from 4.18 to 102.91 mg gallic acid equivalents (GAE)/g dry extract. The extracts showed considerable effect on reducing the oxidation of β-carotene. The highest radical scavenging activity was obtained for ME of </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">I. helenium </span></span></em><span style="font-size: xx-small;">ssp. </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">orygalis </span></span></em><span style="font-size: xx-small;">in DPPH assay. ME, EE and EAE of four </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">Inula helenium </span></span></em><span style="font-size: xx-small;">taxa showed significant antibacterial activity against 13 bacteria tested. WEs had no inhibitory effect against bacteria tested except for </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">I. helenium </span></span></em><span style="font-size: xx-small;">ssp. </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">orygalis</span></span></em><span style="font-size: xx-small;">. EE of </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">I. helenium </span></span></em><span style="font-size: xx-small;">ssp. </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">orygalis </span></span></em><span style="font-size: xx-small;">was only effective against </span><em><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;"><span style="font-family: Times New Roman,Times New Roman; font-size: xx-small;">C. albicans</span></span></em><span style="font-size: xx-small;">. </span> https://ijsts.shirazu.ac.ir/article_3398_ba4d8dad6ce292d3d7ab53afcbac14e5.pdf