TY - JOUR T1 - Bezelyelerde Klorofil Degradasyonu ve Renk Kaybı Üzerine Isıl İşlemin Etkisi (İngilizce) TT - Effect of Heat Treatment on Chlorophyll Degradation and Color Loss in Green Peas (in English) AU - Erge, Hande Selen AU - Karadeniz, Feryal AU - Koca, Nuray AU - Soyer, Yeşim PY - 2008 DA - October JF - Gıda JO - GIDA PB - The Association of Food Technology WT - DergiPark SN - 1300-3070 SP - 225 EP - 233 VL - 33 IS - 5 LA - tr AB - Bezelyelerde klorofilin termal degradasyon kinetiği ve görünür yeşil renkteki kayıp 70°, 80°, 90° ve 100 °C’de araştırılmıştır. Klorofil a ve klorofil b’nin parçalanması birinci dereceden bir kinetik model izlemektedir. Tristimulus kolorimetresi ile ölçülen -a, -a/b ve h (hue) değerlerindeki değişim ile ortaya konulan görünür yeşil renkteki kayıp da birinci dereceden reaksiyona uymaktadır. Klorofil a ve b için aktivasyon enerjileri sırasıyla 47.78 and 26.77 kJ mol-1olarak belirlenirken; -a, -a/b ve h değerleri için aktivasyon enerjileri 49.75, 56.04 and 55.06 kJ mol-1 olarak saptanmıştır. KW - Klorofil KW - kinetik KW - bezelye KW - renk N2 - Thermal degradation kinetics of chlorophyll and visual green color loss in green peas were investigated at 70°, 80°, 90° and 100 °C. The degradation of chlorophyll a and chlorophyll b followed a first-order kinetic model. The loss of visual green color, as represented by the change of the -a, the ratio -a/b and h (hue) values measured by tristimulus colorimeter, also followed a first-order reaction. The activation energies for chlorophylls a and b were determined as 47.78 and 26.77 kJ mol-1, while those for -a, -a/b and h values were found as 49.75, 56.04 and 55.06 kJ mol-1, respectively. CR - Almela L, Fernández-López JA and Roca MJ. 2000. 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