Effect of spray drying conditions on physicochemical, functional properties and production yield of malt extract powder

In this study, the influence of various parameters such asinlet air temperature and maltodextrin concentration on physicochemical and functional properties as well as production efficiency of spray dried malt extract powder was investigated.A pilot-scale spray dryer used for drying. Process variables were inlet air temperature and maltodextrin concentration (DE=18-20). Maltodextrin asdrying aid in concentrations of 20, 30 and 40% (w/wwet weight of malt extract) was used. Inlet air temperature of 140, 160 and 180˚C in a co-current stream wasused. In all experiments, atomizer rotational speed, feed flow rate, feed temperature and atomizer air pressure were kept constant at 18000 rpm, 10 ml/min, 30±1˚C and 4±0.1bar, respectively. The least significant difference between means at p