Abstract: Selenium-enriched rapeseed protein peptides were prepared by enzyme-hydrolyzing protein isolates which were extracted from selenium-enriched defatted rapeseed meal. Some physical properties were determined on peptide production including solubility, viscosity, moisture regain and moisture retaining quality, metamorphic by being heated. The results showed that selenium-enriched rapeseed protein peptide had the advantage of solubility over rapeseed protein isolate and it had not sedimentation in any pH water. Its viscosity was very low. When concentration is 30% it still had well apparent fluidity. Its moisture regain and moisture retaining quality was better and it had good heat stability.

Key words: selenium-enriched rapeseed protein peptides, solubility, viscosity, moisture regain and moisture retaining quality, heat stability