Using glyco-soyprotein as raw material,enzymolysed by alkaline protease to obtain glycopeptides with th function of inhibiting pathogenic bacteria adhesion,the digestion of glycopeptide stability was analyzed. Enzymolysed content with Sephadex G-25 chromatography could obtain molecular weight of 20 000 Da,6 500 Da and less than 3 000 Da components. After enzymolysed by Pepsin and trypsin in vitro 2 hours in sequence,glycopeptides molecular weight between 20 000 Da and 6 500 Da were relatively stable,but the...