This study aims to determine some phytochemical properties and antioxidant activities of Gelincik apple and Hüsnüyusuf pear, which are native to Kütahya.
Dry matter and water-soluble dry matter amount (WDSM), pH, titratable acidity (TA), vitamin C, total and reducing sugars were determined as phytochemical properties. In addition, antioxidant activity level was determined by DPPH assay.
According to this study, the WSDM content of Gelincik apple and Hüsnüyusuf pear samples ranged between 12.8-13.3%, and 11.8-12.9%, respectively. Gelincik apple pH and TA values were between 4.73-4.65 and 0.13-0.17%, respectively; Hüsnüyusuf pear pH and TA values were 3.56-3.90 and 0.32-0.59%, respectively. Total sugar values of Gelincik apple ranged between 9.10-11.10 g/100 mL, the reducing sugar content ranged between 7.45-9.09 g/100mL. The total sugar content of Hüsnüyusuf pear varied between 7.72-9.10 g/100mL, and reducing sugar content varied between 5.98-7.05 g/100 mL. As a result of the DPPH assay, the antioxidant activities of Gelincik apple and Hüsnüyusuf pear were found between 63.91-72.18 %, and 56.42- 39.83 %, respectively. The vitamin C contents of Gelincik apple and Hüsnüyusuf pear were between 7.52-8.44 mg/100mL, and 6.60-5.84 mg/100mL, respectively.
This study is the first study to raise awareness for the promotion and evaluation, and conservation of existing genetic resources of the Gelincik apple and the Hüsnüyusuf pear, two of the botanical riches of Kütahya. It is thought to be a source for future studies on this subject.