Pomegranate (Punica granatum L.), based on the origin of Southeast Asia and Turkey, with a large growth area such as the Mediterranean and the Arab countries, is the most important plant belonging to family Lythraceae. Pomegranate peel and seed contain numerous and various bioflavonoid, which is indicated to be both antimicrobial and inhibitors of enzymes such as cyclooxygenase and lipoxygenase. The antioxidant, antimicrobial, and antifungal properties of the pomegranate are related to phytochemicals such as delphinidin, cyanidin, pelargonidin, ellagic acid, punicalin, punicalagin, pedunculagin, and different glucosides, which involve anthocyanins. In this study, it was investigated that ethanol, methanol and distilled water extracts, obtained from Punica granatum L. antimicrobial effect against Bacillus cereus, Listeria monocytogenes, Escherichia coli, Enterobacter aerogenes, Salmonella Typhimurium, Staphylococcus aureus, Pseudomonas aeruginosa bacteria known as food pathogen by using disk diffusion method. Also, minimal inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values on seven different food borne pathogens were also determined. As a result of the research; pomegranate seed extracts obtained from methanol observed the highest antimicrobial effect against Pseudomonas aeruginosa with a 29.02 mm zone diameter, while pomegranate peel extracts obtained from ethanol observed the highest antimicrobial effect against Bacillus cereus with a 26.84 mm zone diameter. The MIC and MBC value against Pseudomonas aeruginosa are determined 7.81 µg/L, while The MIC and MBC value against Bacillus cereus are determined 31.25 and 15.63 µg/L, respectively.

In this study, it is aimed to produce Turkish delight by using fresh squeezed pomegranate juice obtained from two different sour and sweet pomegranate varieties in 20% and 30% of the water to be used in the formulation. Water soluble dry matter, pH, total acidity, total phenolic substance, total anthocyanin, colour, hardness value, water activity of Turkish delight added pomegranate juice were analysed and the samples were sensory evaluated. Soluble solids dry matter values of Turkish delight were; 71.25-81.90 °Brix; pH values; 3.50-4.78, hardness values; 0.75-1.64 N, total acidity values; 0.042-0.240g/100g, L values; 27.43-43.94, a* values; (-0.66)-(+14.45) and b* values; (-1.67)-(+4.08), the amount of the total phenolic matter; 201.33-760.33 mg GAE/kg, the amount of total anthocyanin; 10.01-42.15 mg Cy-3Gluc/kg determined, respectively. When the results of the sensory evaluation were examined, the highest average score in terms of many features was obtained with a sweet pomegranate juice (300 ml) obtained with hydraulic press. It can be concluded that the products rich in functional components and preferred by consumers can be produced.

Bu çalışmada çekirdekli ve çekirdeksiz nar taneleri (Punica granatum L.) ince tabaka halinde farklı sürelerde ultrason ön işlemi (US) uygulandıktan sonra 70 °C’de 1,3 m/s hava hızında kurutulmuştur. Nar tanelerinin kuruma kinetiğinin incelenmesi amacıyla literatürde çok kullanılan ancak karmaşık ve verilerin dönüştürülmesini gerektiren çok parametreli modeller yerine en çok iki parametreli modeller kullanılmıştır. Bu modeller Lewis (Newton), Page, Modifiye Page I, Weibull, Weibull I ve Modifiye Çift Terimli III modelleridir. Kurutma işlemlerini en iyi açıklayan modelin seçilmesi amacıyla hata kareleri ortalamasının kare kökü (RMSE) ve belirleme katsayısı (R2) değerleri incelenmiştir. Elde edilen sonuçlara göre çekirdekli nar tanelerinin kurutulmasını tüm işlem koşullarında en iyi Page modelinin açıkladığı belirlenmiştir. Çekirdeksiz nar tanelerinde ön işlemsiz ve 10 dakika US ön işlemli nar tanelerinin kurutulmasını en iyi açıklayan modelin Page modeli, 20 ve 30 dakika US ön işlemli nar tanelerinin kurutulmasını en iyi açıklayan modelin ise Weibull modeli olduğu belirlenmiştir. Bununla birlikte, kurutma öncesinde uygulanan farklı sürelerdeki US ön işlemlerinin çekirdekli ve çekirdeksiz nar tanelerinin kuruma sürelerini önemli ölçüde azalttığı belirlenmiştir.