3.1. Drying curves and modelling drying data
The changes in moisture ratio with drying time of sardine fish in microwave drying are presented in Fig. 2 It was found that the moisture content is effected by the microwave power input and drying time of the sardine fish was significantly reduced from 9.5 to 4.25 min, as the power input increased as can be seen in Fig. 2 It is also clear from the same figure that, increas- ing the power output resulted in shortened drying times up to 51%. Duan et al. (2010) dried tilapia fish in hot air