The spray nozzle used was of 1.0 mmsize. The operating conditions maintained were inlet temperature100e120 C, outlet temperature 60e65 C, flow rate of the solution300 mL/h, airflow rate 40e50 m3/h and atomizing air pressure1.2e1.5 bar. The spray dried micronized powder was collected fromthe cyclones and passed through US ASTM mesh of size 40.