Four techniques have been employed for the drying oftea polysaccharides solution. These included freeze-drying,spray-drying, vacuum-drying and microwave-vacuum drying.Freeze-drying was carried out from −40◦C to 40◦C for 48 h inaccordance with the curve designed. The spray drying was per-formed at the pressure, inlet and outlet temperatures of 552 kPa,160◦C and 80–85◦C, respectively [11]. The vacuum-drying wasemployed by using a vacuum-dryer at 60◦C for 24 h accordingto the procedure described by Amid and Mirhosseini [14]. Themicrowave-vacuum drying experiments were carried out ofmicrowave power (3 kW) and temperature (50◦C) for 20 min byusing a microwave-vacuum dryer.