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The characteristics of SDF from soybean dregs were studied by infrared spectrometer,viscometer and other Methods.The resuhs showed that SDF were polysaccharides and the SDF content were about 91.12%.The SDF were analyzed to be water holding capacity 8.25gog-1,swelling capacity 9.38mlogl,water binding capacity 7.11gog-1 and cation-exchange capacity 0.73 mmol,g-1.The SDF had a certain degree of adsorption of sodium cholate