抄録
In producing Active Fish Prothein Powder (AFPP) by spray-drying, one of the most impor-tant problems is the recovery of fish meat powder.
It was presumed that the recovery of AFPP is affected by its moisture content and moisture is affected by the viscosity of fish meat sol and the temperature of spray-drying.
Accordingly, the influence that the viscosity of fish meat sol and inlet and outlet air tempera-ture of spray-drying exert on the recovery, the moisture, and the particle size of AFPP were researched.
The recovery of AFPP was related to its moisture content and increased under the condition that the moisture of AFPP is reduced. In order to reduce the moisture of AFPP, the lower viscosity of fish meat sol, the lower inlet air temperature, and the raised outlet air temperature were needed.
The particle size of AFPP was affected by the viscosity of fish meat sol. The high viscosity allowed big drops of fish meat sol to grow on spraying and produced big particles of AFPP. The big drops collided with the wall and the bottom of drying-chamber directly and caused the recovery of AFPP to decrease.
