Study on Physicochemical Properties of Potato Pulp with Enzyme Treatment

[Objective] To study effects of enzyme treatment on physicochemical properties of potato pulp. [Method] The chemical composition and crystalline structure of potato pulps of different treatments were studied by FTIR and XRD. [Result] Scanning electron microscope showed that enzymolysis made the structure looser. Therefore,different functional properties were shown in these samples. Higher values of ion exchange capacity,cellulose conversion ratio,expansibility,water- and oil- holding capacities were found in potato pulp after treatment by enzyme. And that higher emulsifying activity with high emulsion stability was shown in hydrolyzed potato pulps. [Conclusion] The hydrolyzed potato pulps did not change compared with that of untreated,and it is helpful to provide environment for intestinal digestion and absorption and more conducive as feed additive.