To produce the watermelon powder a Buchi mini spray dryer model B-190 was used. The experimental parameters were 180 nd 90°C as inlet and outlet temperatures of the drying air, respectively; atomization pressure of 7 bar; air flow rate of 700 L/h and feed flow rate of 34 ml/min. Arabic gum and maltodextrin (DE=l 9-22), at 8% concentration each (Matioli and Rodriguez-Amaya, 2002), were used as encapsulating agents. The final total solid content of the feed mixture was 22%. The mixture was homogenized using a domestic blender. The obtained microcapsules were paced in aluminum bags and stored at room tmperature. The microencapsulation yielding of the process (MY) was described as the ration between the quantity of the dry powder (M) and the total solids ( TS) of the feed solution according to Equation 1, these results were present as percentage (%).