Organic acid profile of Turkish white grapes and grape juices


Soyer Y. , Koca N., Karadeniz F.

JOURNAL OF FOOD COMPOSITION AND ANALYSIS, cilt.16, sa.5, ss.629-636, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 16 Konu: 5
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1016/s0889-1575(03)00065-6
  • Dergi Adı: JOURNAL OF FOOD COMPOSITION AND ANALYSIS
  • Sayfa Sayıları: ss.629-636

Özet

Organic acid compositions of 11 different white grape cultivars and grape juices were determined by high-pressure liquid chromatography (HPLC). The ranges of acid concentrations found in grapes were as follows: citric, 30-164 mg/l; tartaric, 4.98-7.48 g/l and malic, 1.43-3.40 g/l. Also the ranges of acid concentrations found in grape juices were as follows: citric, 31-181 mg/l, tartaric, 4.07-4.92 g/l and malic, 1.36-3.47 g/l. Tartaric acid was the major acid in every grape variety analyzed. Grape juices had a lower tartaric acid content than grapes due to detartration process. (C) 2003 Elsevier Ltd. All rights reserved.