Okara is the main byproduct of soybean processing.This paper mainly expounds the extracting process and utilization of soluble soybean polysaccharide(SSPS) from okara on milk and rice.And the okara was obtained from defatted soybean flake after the extraction of protein.Through the orthogonal experiment,the optimal extracting conditions of SSPS were obtained as follows: the addition amount of HCl was 2%(v/w);extracting temperature was 120 ℃;the extracting duration was 2 h.The experiments of applying the sol...