Method for preparing dietary fiber from bean dregs serving as raw material by combining steam explosion and enzymolysis
A technology of dietary fiber and bean dregs, which is applied in the direction of fermentation, etc., to achieve the effects of convenient production arrangement, good taste and small particle size
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Embodiment 1-1
[0052] Using bean dregs as raw materials, steam explosion combined with enzymolysis is used to produce pure natural mixed dietary fiber with high content of water-soluble dietary fiber. The operation steps are as follows:
[0053] 1).Using any one of the published bean dregs degreasing, protein removal and deodorization process to process the bean dregs to obtain pre-treated bean dregs;
[0054] 2). The pretreated bean dregs obtained in step 1) are subjected to steam explosion, the pressure of steam explosion is 1.6MPa, the temperature of the cylinder body is 350° C., and the ratio of material to water is 1:20 to obtain explosive bean dregs;
[0055] 3). Grinding the explosive bean dregs obtained in step 2) to more than 320 mesh to obtain bean dregs powder;
[0056] 4). Carrying out enzymatic hydrolysis of the bean dregs powder obtained in step 3), using cellulase for enzymatic hydrolysis. The preferred pH value is 5.0, the enzymolysis temperature is 45°C; the enzymolysis time ...
Embodiment 1-2
[0059] Using bean dregs as raw materials, steam explosion combined with enzymolysis is used to produce pure natural mixed dietary fiber with high content of water-soluble dietary fiber. The operation steps are as follows:
[0060] 1). Same as step 1) of Example 1-1, to obtain pre-treated bean dregs;
[0061] 2). Same as step 2) of Example 1-1, to obtain explosive bean dregs;
[0062] 3). Same as step 3) of Example 1-1 to obtain bean dregs powder;
[0063] 4). Carrying out enzymatic hydrolysis of the bean dregs powder obtained in step 3), using cellulase for enzymatic hydrolysis. The preferred pH value is 4.0, the enzymolysis temperature is 35°C; the enzymolysis time is 3h; the activity of the enzyme is 437.6U / g. Obtain enzymatic pulp after enzymatic hydrolysis;
[0064] 5). Spray-dry the enzymatic slurry obtained in step 4) until the water content is less than 10%, to obtain pure natural mixed dietary fiber with a water-soluble fiber content of 17.87%.
Embodiment 1-3
[0066] 1). Same as step 1) of Example 1-1, to obtain pre-treated bean dregs;
[0067] 2). Same as step 2) of Example 1-1, to obtain explosive bean dregs;
[0068] 3). Same as step 3) of Example 1-1 to obtain bean dregs powder;
[0069] 4). Carrying out enzymatic hydrolysis of the bean dregs powder obtained in step 3), using cellulase for enzymatic hydrolysis. The preferred pH value is 6.0, the enzymolysis temperature is 55°C; the enzymolysis time is 5h; the activity of the enzyme is 437.6U / g. Obtain enzymatic pulp after enzymatic hydrolysis;
[0070] 5). Spray-dry the enzymatic slurry obtained in step 4) until the water content is less than 10%, to obtain pure natural mixed dietary fiber with a water-soluble fiber content of 14.65%.
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