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Method for preparing dietary fiber via mechanical activation and enzymolysis by taking bean dregs as raw material

A technology of mechanical activation and dietary fiber, which is applied in the fields of application, food preparation, food science, etc., can solve the problems of increasing the separation process, and achieve the effect of short process flow and reduced enzyme consumption

Inactive Publication Date: 2011-04-20
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method increases the separation process to produce pure natural water-soluble dietary fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0059] Using bean dregs as raw material, adopting mechanical activation combined with enzymatic hydrolysis to produce pure natural mixed dietary fiber with high content of water-soluble dietary fiber, the operation steps are as follows:

[0060] 1).Using any one of the disclosed bean dregs degreasing, protein removal and deodorization process to process the bean dregs to obtain pre-treated bean dregs;

[0061] 2). Coarsely pulverizing the pretreated okara obtained in step 1) to 80 meshes to obtain coarse okara powder;

[0062] 3). Activate the coarse bean dregs powder obtained in step 2) in a ball mill (QM-3SP04 planetary ball mill, Nanjing University Instrument Factory) for 5 hours to obtain mechanically activated bean dregs powder;

[0063] 4). The mechanically activated okara powder obtained in step 3) is subjected to enzymatic hydrolysis, and cellulase is used for enzymatic hydrolysis. The preferred pH value is 4.5, the enzymolysis temperature is 50°C; the enzymolysis tim...

Embodiment 1-2

[0066] Using bean dregs as raw material, adopting mechanical activation combined with enzymatic hydrolysis to produce pure natural mixed dietary fiber with high content of water-soluble dietary fiber, the operation steps are as follows:

[0067] 1). With step 1) of embodiment 1-1, obtain pre-treated bean dregs;

[0068] 2). With embodiment 1-1 step 2), obtain coarse bean dregs powder;

[0069] 3). Same as step 3) of Example 1-1 to obtain bean dregs powder;

[0070] 4) Carrying out enzymatic hydrolysis of the mechanically activated bean dregs powder obtained in step 3), using cellulase for enzymatic hydrolysis. Enzymolysis conditions: pH value 3.5, enzymolysis temperature 40°C; enzymolysis time 4h; enzyme activity 437.6U / g. Obtain enzymatic pulp after enzymatic hydrolysis;

[0071] 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 14.85%.

Embodiment 1-3

[0073] Using bean dregs as raw material, adopting mechanical activation combined with enzymatic hydrolysis to produce pure natural mixed dietary fiber with high content of water-soluble dietary fiber, the operation steps are as follows:

[0074] 1). With step 1) of embodiment 1-1, obtain pre-treated bean dregs;

[0075] 2). With embodiment 1-1 step 2), obtain coarse bean dregs powder;

[0076] 3). Same as step 3) of Example 1-1 to obtain bean dregs powder;

[0077] 4) Carrying out enzymatic hydrolysis of the mechanically activated bean dregs powder obtained in step 3), using cellulase for enzymatic hydrolysis. Enzymolysis conditions: pH value 5.5, enzymolysis temperature 60°C; enzymolysis time 10h; enzyme activity 437.6U / g. Obtain enzymatic pulp after enzymatic hydrolysis;

[0078] 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 14.63%.

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Abstract

The invention discloses a method for preparing dietary fiber via mechanical activation and enzymolysis by taking bean dregs as a raw material. An all-natural full water-soluble dietary fiber product is prepared through the following steps: the pretreatment of bean dregs, coarse grinding, mechanical activation, enzymolysis and the dryness of enzymolysis slurry. The invention has the following advantages: 1. the method provided by the invention has the characteristics of short process flow, high resource utilization ratio, low energy consumption and minimum three wastes; the consumption amount of enzyme in the enzymolysis process is greatly reduced so as to lower the production cost, and mechanical activation is adopted without adding other chemical substances, so that the product is all-natural dietary fiber and has good quality; in addition, the content of water-soluble dietary fiber is high and can reach above 17.20%, so that the method is conveniently and directly used for producing dietary fibre tablet products; and 2. the enzyme used in the method provided by the invention not only can be cellulose but also can be pectinase or xylanase. According to the invention, production arrangement can be carried out conveniently, and the production flow is simplified.

Description

technical field [0001] The invention relates to a preparation method of dietary fiber. Specifically, the dietary fiber is prepared by using bean dregs as raw materials through mechanical activation combined with enzymatic hydrolysis. Background technique [0002] Okara is a by-product of the process of making soy milk or tofu. Studies have found that soybean cell walls contain about 50% hemicellulose and 20% cellulose. Therefore, soybean skin is an excellent source of dietary fiber. The total dietary fiber content in okara is more than 50%, but most of it is insoluble dietary fiber, and the content of water-soluble dietary fiber is relatively low. Okara also contains a small amount of fat and protein substances, and has a special beany smell. When producing dietary fiber, pretreatment is required to remove fat, protein substances and fishy smell. At present, the pretreatment of dietary fiber preparation mostly adopts the method of heating, alkali treatment and washing wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/20A23L1/308A23L33/22
Inventor 李坚斌扈胜禄林莹柳嘉韦巧艳刘建
Owner GUANGXI UNIV
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