Rheological Properties of Sübye, Traditional Beverage

Yıl 2014, Cilt: 12 Sayı: 1, 11 - 15, 01.03.2014

Serdal Sabancı Cansu Celebi Filiz Icier

Öz

Sübye is a traditional cold beverage and consists of melon seeds, sugar and water. Sübye production is important in economic and environmental point of view since melon seeds, wastes of food production, are used as a raw material. In this study, rheological properties of Sübye were determined by fitting shear stress–shear rate data to some rheological models. Herschel-Bulkley model was the best model that fitted the experimental data R2=0.996, X2=0.0245, RMSE=0.0008 . Also Sübye showed time-dependent rheopectic characteristics at low and high shear rates whereas thixotropic characteristics existed at medium shear rates

Anahtar Kelimeler

Food waste, Modeling, Rheology, Sübye, Traditional food

Geleneksel İçecek Sübyenin Reolojik Özellikleri

Öz

Sübye kavun çekirdekleri, şeker ve su ile elde edilen geleneksel soğuk bir içecektir. Sübye üretimi bir gıda atığı olan kavun çekirdeklerinin hammadde olarak kullanılması ile ekonomik ve çevresel önem kazanmaktadır. Bu çalışmada, sübye’nin reolojik özellikleri kayma gerilimi ve kayma hızı verilerinin bazı reolojik modellere uyarlanması ile belirlenmiştir. Herschel-Bulkley modelinin en iyi uyumluluk gösteren model olduğu bulunmuştur R2=0.996, X2=0.0245, RMSE=0.0008 . Ayrıca sübyenin düşük ve yüksek kayma hızlarında reopektik, orta kayma hızlarında ise tiksotropik özellik gösterdiği tespit edilmiştir

Anahtar Kelimeler

Gıda atığı, Modelleme, Reoloji, Sübye, Geleneksel gıdalar

Kaynakça

• Badifu, G.I.O., 1993. Food potentials of some unconventional oilseeds grown in Nigeria. Plant Foods Human Nutr. 43: 211-224.
• de Melo, S.D., Narain, N., Bora, P.S., 2000. Characterisation of some nutritional constituents of melon (Cucumis melo hybrid AF-522) seeds. Food Chemistry 68: 411- 414.
• Karakaya, S., Kavas, A., El, S.N., Akdoğan, L., 1995. Nutritive value of melon seed beverage. Food Chemistry 52: 139-141.
• Genc, M., Zorba, M., Ova, G., 2002. Determination of rheological properties of boza by using physical and sensory analysis. Journal of Food Engineering 52: 95–98
• Krokida, M.K., Maroulis, Z.B., Saravacos, G.D., 2001. Rheological properties of fluid fruit and vegetable puree products: compilation of literature data. International Journal of Food Properties 4(2): 179–200.
• Ofoli, R.Y., 1990. Interrelationships of rheology, kinetics, and transport phenomena in food processing. In H. Faridi & J. M.Faubion (Eds.), Dough Rheology and Baked Product Texture New York. AVI.
• Maskan, M., Göğüş, F., 2000. Effect of sugar on the rheological properties of sunflower oil–water emulsions. Journal of Food Engineering 43: 173- 177
• Tiziani, S., Vodovotz, Y., 2005. Rheological effects of soy protein addition to tomato juice. Food Hydrocolloids 19: 45–52.
• Prudencio, I.D., Prudencio, O.S., Gauche, C., Bareto, P.L.M., Bordigno-Luiz, M.T., 2008. Flow properties of petit suisse cheese: use of cheese whey as a partial milk substitute. Italian Journal of Food Science 20(2): 169-179.
• İçier, F., Bozkurt, H., Gürbüz, S., 2008. Kefir ve akıcı karakterizasyonu. Akademik Gıda 6: 6-11. reolojik özelliklerinin
• Gabsi, K., Trigui, M., Barrington, S., Helal, A.N., Taherian, A.R., 2013. Evaluation of rheological properties of date syrup. Journal of Food Engineering 117: 165–172 [12] Malkin, A.
• Rheology Fundamentals
• Chemtec Publishing, Canada.
• Maceiras, R., Alvarez, E., Cancela, M.A., 2007. Rheological properties of fruit purees: Effect of cooking. Journal of Food Engineering 80(3): 763- 769
• Arslan, E., Yener, M.E., Esin, A., 2005. Rheological characterization paste/concentrated grape juice) blends. Journal of Food Engineering 69: 167–172 tahin/pekmez (sesame
• Steffe, J.F., 1992. Rheological Methods in Food Process, Vol. 2. Freeman Press, East Lansing MI, pp. 164–165.
• Goula M.A. and Adamopoulos K.G. 2011. Rheological Models of Kiwifruit Juice for Processing Applications. Food Processing & Technology 2: 46- 52.