| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Variety of powdered food products are agglomerated to granule form to improve their solubility. Aqueous solutions of polysaccharides are usually added to the powder as binder for the granulation of food powder. Reducing the binder addition expectedly shortens the processing time and successive drying, which leads the improvement of process efficiency and product quality. In this study, the effect of electrostatic charge of binder droplets and the powder on the granule forming process in fluidized bed was investigated. The binder droplets were charged by applying the electrostatic induction to a spraying nozzle. The powder materials were charged by applying ionizer to the air for the fluidized bed. The results of the granulation tests indicated that the electrostatic charge of the binder droplets and powder in opposite polarity accelerated the agglomeration process. However the adhesion of the powder with strong electrostatic charge was remarkable inside the granulation vessel.
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