| Summary: | This study was carried out to determine the phenolic substances and antioxidant activities of 11 local grape cultivars (Burdur Dimriti, Siyah Gemre, Ak Gemre, Antep Büzgülü, Şam Büzgülü, Kuş Yüregi, Ak Dimrit, Marzımat, Senirkent Dimriti, Devegözü, Tilki Kuyrugu) grown in Egirdir/Isparta province of Turkey by the means of High Performance Liquid Chromatog- raphy (HPLC) and also were evaluated for their yield and quality characterics. Burdur Dimriti, Antep Büzgülü, Şam Büzgülü cultivars were evaluated good for yield and table consumption. Ak Gemre, Marzımat, Devegözü, Ak Dimrit, Senirkent Dimriti and Kuş Yüregi varieties were evaluated good for must production. Gallic acid, cafeic acid, p-cumaric acid, ferulic acid, catechin, epicatechin, epicatechin gallate, epigallocatechin, epigallocatechin-3-gallate, kaemferol, myricetin, rutin hydrate, resveratrol, quercetin were determined in berry samples of 11 cultivars. Phenolic substances varied between 0 and 101.466 μg/ml in frozen berry samples varying to grape variety. Some of the cultivars can be evaluated as a good source of resveratrol, gallic acid, quercetin, and catechin. Antep Büzgülü, Burdur Dimriti, Kuş Yüregi, Senirkent Dimriti, Siyah Gemre were evaluated hopeful phenolic sources for further studies. Further detailed studies will be planned about phenolic and antioxidant compositions of these hopeful local varieties according to research results.
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