Özet:

Wild edible plants have been commonly used as food sources all over the world, because of their nutritional and functional properties. Turkey is one of the richest countries of the world in terms of plant diversity. Several wild edible plants are traditionally used in nutrition and consumed as vegetable in Turkey. Gundelia tournefortii L. belongs to the Asteraceae (Compositae) family, is a well-known plant in Eastern Anatolia to Western Asia. This plant locally known as “Kenger otu, kenger sakızı, sakız otu, çadır dikeni, kanak sakızı” in Turkey. Its leaves and stems are used as food especially ingredients in soups and salads. In addition, Gundelia tournefortii has been commonly used in traditional medicine as a hepatoprotective, a potential remedy for diabetes, chest pain and digestive in the Middle East. The main objectives of this study were to determine the total phenolic contents and antioxidant capacities of Gundelia tournefortii and to examine the phenolic bioaccessibilities of this plant collected from Diyarbakır region. Folin-Ciocalteu method was used for total phenolic content. Antioxidant capacity assay was stated according to CUPRAC, ABTS and DPPH methods. For the determination of bioaccessibility, plant samples were processed by an in-vitro digestive enzymatic extraction that mimics the conditions in the gastrointestinal tract. The extractable total phenolic content of Gundelia tournefortii L. stems were 700,21 mg GAE /100g fw, whereas hydrolyable phenolics were 1119,23 mg GAE /100g fw, respectively. Bioaccessibility of antioxidants were determined average 95% by ABTS method. The study indicated that Gundelia tournefortii have the potential to be sources of antioxidant components and can be included in the daily diet as a natural antioxidant.

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