TY - GEN AU - Ekram Abdelsalam Abdelsalam AU - Alaa Abdelsalam Fahmy , AU - Mohammed Hassan Ali Hussien , AU - Yahia Ibrahem Sallam , TI - Technological and engineering studies on the spray drying of roselle extract concentrate / PY - 2008/// CY - Cairo : PB - Ekram Abdelsalam Abdelsalam , KW - Maltodextrin KW - Roselle extract KW - Spray drying N1 - Thesis (M.Sc.) - Cairo University - Faculty Of Agriculture - Department Of Food Science and Technology; Issued also as CD N2 - This study was carried out to apply spray drying method to produce roselle extract powder the effect of different operating conditions and drying aid agent on the physicochemical properties and the yield of produced powder was studied to reach the optimum operating condittions and the best type and proportion of drying aid agent ER -