关键词: 甘薯渣;结合淀粉;酶法;葡萄糖

Abstract:

Sweet potato residue is the by\|product of sweet potato starch production. It contains about 50% starch. In this study, the alpha\|amylase, glucoamylase, and cellulase were used to hydrolyze the sweet potato residue, and then were inactivated by the thermo treatment. The sugar products were separated and concentrated. Analyzed by the high performance liquid chromatography (HPLC), most component of the product is glucose. The condition of enzyme hydrolysis was optimized with the orthogonal experiment, and the results are as follows: the material content is 6 percent, the amount of amylase is 12 U/g dry matter, liquefaction time is 60 min, the amount of glucoamylase is 300 U/g dry matter, the amount of cellulase is 0.5 U/g dry matter, saccharification time is 24 h. Because of its simple craft and its product with good quality and high quantity, this technique can help to solve serious environmental pollution caused by sweet potato residue, may have good industrial applications prospects.

Key words: sweet potato residue, bound starch, enzyme, glucose