The effects of wheatgrass length on antioxidant activity and total phenolic content in wheatgrass (Triticum spp.)

This study was carried out with the aim of determining the effects of wheatgrass lengths on antioxidant activity and totalphenolic content of wheatgrass belonging to different cultivars (Triticum spp.) in laboratory conditions in 2017. When the wheatseedlings grown in plastic containers under soilless conditions reached three levels of wheatgrass length (5–6, 8–9, and 11–12 cm),the seedlings were cut from the root collar and dried in an oven. As a result of analysis of the dried material, it was found that the cutlengths of wheatgrass significantly (P < 0.01) affected antioxidant activity and total phenolic content of wheatgrass. Ten wheat cultivarsbelonging to Triticum monococcum L., T. durum L., and T. aestivum L. were used. Wheatgrass was cut at three lengths (5–6, 8–9, and11–12 cm). It was found that the wheatgrass lengths had a significant (P < 0.01) effect on antioxidant and total phenolic content ofwheatgrass. In addition, in terms of these traits, the most suitable wheatgrass length for cutting changed depending on the wheat speciesand also cultivars. The highest (P < 0.01) antioxidant activity and total phenolic content (TPC) were also determined at three wheatgrasslengths in cultivar Sarıbaşak. The average values obtained from Sarıbaşak wheatgrass were 31.0% for DPPH-free radical scavengingactivity and 51.6 mg GAE–1 dry weight for TPC. The results of the analysis suggested that Sarıbaşak is the most promising cultivar interms of both antioxidant activity and TPC in wheatgrass.

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