Objective To compare the extraction process of alkali extraction and enzymatic hydrolysis,and to compare the yield of dietary fiber(Soluble dietary fiber,insoluble dietary fiber)and the physicochemical properties of different extraction methods.Methods The amount of enzyme,enzymatic hydrolysis temperature,enzymatic hydrolysis time,temperature,material-liquid ratio,alkali concentration and other factors were optimized,and the alkali extraction and enzymatic extraction of dietary fiber experiment was improved to find the optimal extraction condit...