PHENOLIC COMPOUNDS AND ANTIOXIDANT CAPACITIES IN GRAPE BERRY SKIN, SEED AND STEMS OF SIX WINE GRAPE VARIETIES GROWN IN TURKEY

TAHMAZ KARAMAN H., Kusku D. Y., SÖYLEMEZOĞLU G.

ACTA SCIENTIARUM POLONORUM-HORTORUM CULTUS, vol.20, no.1, pp.15-25, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 20 Issue: 1
  • Publication Date: 2021
  • Doi Number: 10.24326/asphc.2021.1.2
  • Journal Name: ACTA SCIENTIARUM POLONORUM-HORTORUM CULTUS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CAB Abstracts
  • Page Numbers: pp.15-25
  • Keywords: grape seed, grape skin, grape stem, trans-resveratrol, ABTS(center dot+), VITIS-VINIFERA, POLYPHENOLIC CONTENT, EXTRACT, ANTHOCYANINS
  • Ankara University Affiliated: Yes

Abstract

In this study, seeds, skins and stems of the red wine grape varieties Bogazkere, Cabernet Sauvignon, Merlot, Nero d'Avola, Sangiovese and Syrah grown in Turkey were analysed for their phenolic compounds. The highest total phenolic compound and DPPH were found in the stem of Bogazkere respectively as 62550 mg GAB/kg dw and 614 mu mol/g dw; the highest ABTS(center dot+), (+)-catechin, (-)-epicatechin were detected in the seed of Nero d'Avola respectively as 617 mu mol trolox/g dw, 8650 mg/kg and 1902 mg/kg dw; the highest total anthocyanin and rutin were measured in the skin of Bogazkere respectively as 143.52 mg/kg dw and 9692 mg/kg dw; the highest quercetin was found in the seed of Bogazkere as 49.21 mg/kg dw and the highest trans-resveratrol was measured in the stem of Syrah as 61.56 mg/kg dw.