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Preparation method of soybean seed coat water soluble dietary fibers

A dietary fiber, water-soluble technology, applied in dairy products, food science, milk preparations, etc., can solve the problems of difficult control of product yield and quality, reduced physiological activity of dietary fiber, and non-advocacy.

Inactive Publication Date: 2017-06-27
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because general chemical reagents can reduce the physiological activity of soybean seed coat dietary fiber, the use of chemical methods on soybean seed coats is not recommended. Traditional dietary fiber preparation processes mostly use acid and alkali solution alternate hydrolysis to remove starch and protein, but the hydrolyzed products The flavor and color are poor, the product yield and quality are not easy to control, and it also has a certain impact on the processing properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Pretreatment of soybean seed coats: the soybean seed coats are wet-milled with a ball mill, dried after wet grinding, and dry-milled and pulverized by an ultrafine pulverizer after drying to obtain superfine powder of soybean seed coats;

[0027] (2) Extract the crude product of soybean seed coat water-soluble dietary fiber by flash extraction: add the soybean seed coat superfine powder obtained in step (1) into the alkaline solution for alkaline leaching to remove protein, and then centrifuge to obtain the supernatant a and filter residue: take the filter residue, add deionized water, extract by flash extraction, centrifuge after the extraction to obtain supernatant b, combine supernatant a and supernatant b, and concentrate under reduced pressure to obtain a concentrate;

[0028] (3) Add the mixed enzyme liquid of protease neutral protease, alkaline protease and α-amylase in the concentrated solution, the mass percentage composition of protease in the mixed enzyme ...

Embodiment 2

[0034](1) Pretreatment of soybean seed coats: the soybean seed coats are wet-milled with a ball mill, dried after wet grinding, and dry-milled and pulverized by an ultrafine pulverizer after drying to obtain superfine powder of soybean seed coats;

[0035] (2) Extract the crude product of soybean seed coat water-soluble dietary fiber by flash extraction: add the soybean seed coat superfine powder obtained in step (1) into the alkaline solution for alkaline leaching to remove protein, and then centrifuge to obtain the supernatant a and filter residue: take the filter residue, add deionized water, extract by flash extraction, centrifuge after the extraction to obtain supernatant b, combine supernatant a and supernatant b, and concentrate under reduced pressure to obtain a concentrate;

[0036] (3) Add the mixed enzyme liquid of protease papain, neutral protease and alkaline protease, and α-amylase in the concentrated solution, the mass percentage composition of protease in the mi...

Embodiment 3

[0042] (1) Pretreatment of soybean seed coats: the soybean seed coats are wet-milled with a ball mill, dried after wet grinding, and dry-milled and pulverized by an ultrafine pulverizer after drying to obtain superfine powder of soybean seed coats;

[0043] (2) Extract the crude product of soybean seed coat water-soluble dietary fiber by flash extraction: add the soybean seed coat superfine powder obtained in step (1) into the alkaline solution for alkaline leaching to remove protein, and then centrifuge to obtain the supernatant a and filter residue: take the filter residue, add deionized water, extract by flash extraction, centrifuge after the extraction to obtain supernatant b, combine supernatant a and supernatant b, and concentrate under reduced pressure to obtain a concentrate;

[0044] (3) add the mixed enzyme liquid of papain and α-amylase in the concentrated solution, the mass percentage composition of protease in the mixed enzyme liquid is 0.2%, the mass percentage co...

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Abstract

The invention discloses a preparation method of soybean seed coat dietary fiber, which comprises the following steps: the soybean seed coat is subjected to wet grinding, dry grinding, and alkali leaching to remove protein, and then centrifuged to obtain supernatant a and filter residue, and the filter residue is obtained by flash type After extraction by extraction, centrifuge to obtain supernatant b, combine supernatant a and supernatant b, and concentrate under reduced pressure to obtain a concentrated solution, which is the crude soybean seed coat water-soluble dietary fiber; then pass the concentrated solution through protease and α- After pretreatment with amylase, it is hydrolyzed three times by cellulase, and the hydrolyzate is concentrated, precipitated with absolute ethanol, centrifuged, and dried to obtain water-soluble dietary fiber. In the product prepared by the method of the invention, the water-soluble dietary fiber accounts for more than 95%, and can be directly applied to foods such as beverages and dairy products.

Description

technical field [0001] The invention relates to the field of food deep processing, and specifically relates to a method for preparing soybean seed coat water-soluble dietary fiber. Background technique [0002] Dietary fiber refers to the sum of edible plant cells, polysaccharides, lignin and related substances that cannot be digested and absorbed by human endogenous enzymes. As the seventh largest nutrient, dietary fiber not only has high nutritional value, but also prevents many diseases , essential for human metabolism. Dietary fiber is divided into two categories are water-soluble dietary fiber and insoluble dietary fiber. Water-soluble dietary fiber can combine the functions of removing cholic acid in the body, significantly reducing serum cholesterol, and lowering blood sugar levels after meals, and has expanded the application range in the food industry, and the market demand is increasing year by year. Therefore, dietary fiber has been widely valued by experts from...

Claims

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Application Information

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IPC IPC(8): A23L33/21A23L2/52A23C9/13A23C9/154
CPCA23L2/52A23C9/13A23C9/1544A23V2002/00
Inventor 宋容
Owner 宋容