Abstract: Utilizing the Microfluidizer machinery as the carrier of Instantaneous High Pressure treatment to deal with dietary fiber from bean dregs, and through the physic-mechanic treatment of the dietary fiber, the effect of Instantaneous High Pressure treatment on the solubility of dietary fiber before and after the process has been studied. Under the operation pressure of 40MPa 100MPa and 120MPa, the soluble dietary fiber content of the material was 7.08% 17.51% and 24.76% respectively while the total dietary fiber content was 63.87% 72.19% and 69.78% with the SDF/TDF settled at 0.1109 0.2424 and 0.3548 correspondingly. Concluded from hereinbefore, the content of the total dietary fiber and soluble dietary fiber will be both increased after the process of Instantaneous High Pressure treatment.

Key words: bean dregs, dietary fiber, quality modification, Instantaneous High Pressure