PRODUCTION OF DRIED MISO (FERMENTED BEAN) BY VIBRATION FLUIDIZED BED DRYER

摘要

PURPOSE:To obtain dried MISO (fermented beans) having improved reconstitution property with hot water without losing the original color and flavor of the MISO, by spraying specific fine powdery MISO and raw MISO through a double fluid nozzle, granulating the MISO, rapidly freezing the granulated MISO, and continuously vacuum freeze-drying the resultant granulated MISO in a vibration fluidized bed dryer. CONSTITUTION:Dried MISO (fermented beans) is screened, and a granular material on the screen is used as a product. Fine powdery MISO under the screen is fed back, and 50-80wt% resultant fine powdery MISO and 50-20wt% raw MISO are sprayed through a double fluid nozzle and granulated into the granular form. The resultant granular material is then put into a refrigerator at =-10 deg.C to give a free-flowing granular material, which is continuously vacuum freeze-dried in a vibration fluidized bed dryer under conditions of =3mm.Hg vacuum degree, =70 deg.C bottom plate heating temperature, =50 deg.C product temperature and =1.5mm. vibrational amplitude. The resultant dried material is then screened, granulated and dried repeatedly as described above to afford efficiently the aimed dried MISO.