RESEARCH ON CHEMICAL-COMPOSITION OF SOME VARIETIES OF EUROPEAN PLUMS (PRUNUS-DOMESTICA) ADAPTED TO THE AEGEAN DISTRICT OF TURKEY

The physical characteristics and chemical composition of 11 plum varie ties adapted to the Aegean region of Turkey at Ege Agricultural Resear ch Institute, Izmir, were investigated. Variety Giant had the most fru it weight within all the plum varieties and it was followed by Krikon Damson, Tuleu Timpuriu, and Baneasa 3/5. Mean chemical compositions fo r all varieties were as follows: moisture, 837.4 g kg(-1); soluble sol ids, 155.5 g kg(-1); titratable acidity, 15.1 g kg(-1); soluble solids to titratable acidity ratio, 12.6; total sugar, 96.5 g kg(-1); total sugar to acidity ratio, 7.59; reducing sugar, 51.9 g kg(-1); sucrose, 42.4 g kg(-1); ascorbic acid, 157.9 mg kg(-1); protein, 7.5 g kg(-1); ash, 5.5 g kg(-1); sodium 161.53 mg kg(-1); potassium, 2228.12 mg kg(- 1); calcium, 25.47 mg kg(-1); iron, 4.70 mg kg(-1); pH 3.46. Imperial Epineuse was the most suitable variety for drying. Grand Prize had the highest ascorbic acid content.