酶解处理对马铃薯渣理化性能的影响

Potato pulp is one of the main by-products during potato starch processing. Enzymatic hydrolysis and functional properties of starch and fiber from potato pulp were evaluated in order to examine the feasibility in feed additive. Scanning electron microscope showed that enzymolysis made the struture 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. The chemical composition and crystalline structure of potato pulps of different treatemnt were studied by FTIR and XRD, the results showed that the hydrolyzed potato pulps did not change compared with that of untreated.