Antioxidant capacity and fatty acid profile of Centaurea kotschyi (Boiss. & Heldr.) Hayek var. persica (Boiss.) Wagenitz from Turkey


  • Gokhan Zengin Department of Biology, Science Faculty, Selcuk University
  • Gokalp O. Guler Department of Biological Education, Ahmet Kelesoglu Education Faculty, Selcuk University
  • Yavuz S. Cakmak Department of Biology, Science Faculty, Selcuk University
  • Abdurrahman Aktumsek Department of Biology, Science Faculty, Selcuk University



β-carotene/Linoleic acid system, Centaurea kotschyi, Fatty acid composition, Reducing power, Total antioxidant capacity, Total phenolic content


The antioxidant capacity of the methanolic extract and the fatty acid composition of C. kotschyi var. persica were investigated. Six different chemical methods were used to determine the antioxidant capacity. The fatty acid composition was analyzed using gas chromatography. The IC50 value of the extract was determined as 37.09 μg/ml (in the DPPH assay). In the β-carotene/linoleic acid system, the extract exhibited 65.22% inhibition against linoleic acid oxidation. The amount of total phenolic content and total antioxidant capacity were detected as 36.52 mg gallic acid equivalent (GAE)/g and 74.93 mg ascorbic acid equivalent (AE)/g, respectively. The major fatty acid in the composition of C. kotschyi var. persica was found to be C 18:3 ω3 (α-linolenic acid) by GC analysis. The results presented here indicate that C. kotschyi var. persica possess strong antioxidant properties. Therefore, the species can be used as a natural additive in food, cosmetic and pharmaceutical industries.


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How to Cite

Zengin G, Guler GO, Cakmak YS, Aktumsek A. Antioxidant capacity and fatty acid profile of Centaurea kotschyi (Boiss. &amp; Heldr.) Hayek var. persica (Boiss.) Wagenitz from Turkey. grasasaceites [Internet]. 2011Mar.30 [cited 2021Dec.5];62(1):90-5. Available from: