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Method for preparing soybean hull water-soluble dietary fiber

A technology of dietary fiber and dietary fiber content, applied in food preparation, food science, application, etc., can solve the problems of extracting water-soluble dietary fiber with low cost of purity and unable to meet the production needs of the food industry, so as to achieve sufficient and easy-to-obtain raw materials, Good performance and high purity effect

Active Publication Date: 2011-01-26
新疆早上好生态农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is currently no effective method for extracting water-soluble dietary fiber with high purity, good performance and low cost from soybean hulls, which cannot meet the needs of the food industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 is the preparation method of adding enzyme

[0019] (1) First crush the soybean hulls to 150 mesh;

[0020] (2) Take 1000 g of soybean hulls that have been crushed to 150 mesh, add 20 kg of water, stir at a speed of 100 r / min for 10 min, keep warm at a temperature of 100 ° C for 2 h, and after cooling down to room temperature, carry out centrifugal precipitation at a speed of 5000 r / min for 10 min to remove Sediment, collect filtrate;

[0021] (3) Adding 20 g of hydrogen peroxide with a mass percent concentration of 30% in the obtained filtrate for decolorization, the decolorization temperature is 80° C., and the decolorization time is 1 h;

[0022] (4) adding 10 g of a cellulase solution with a mass concentration of 50% to the solution after heating and decolorization, incubating for 2 hours at 55° C., centrifuging at a speed of 5000 r / min for 10 minutes, removing the filter residue, and collecting the filtrate;

[0023] (5) The obtained water-soluble di...

Embodiment 2

[0025] Embodiment 2 is the preparation method without enzyme

[0026] (1) First crush the soybean hulls to 150 mesh;

[0027] (2) Take 1000 g of soybean hulls that have been crushed to 150 mesh, add 25 kg of water, stir at a speed of 100 r / min for 10 min, keep warm at a temperature of 130 ° C for 1 h, and after cooling down to room temperature, carry out centrifugal precipitation at a speed of 5000 r / min for 10 min to remove Sediment, collect filtrate;

[0028] (3) Adding 10 g of hydrogen peroxide with a concentration of 30% in the obtained filtrate for decolorization, the decolorization temperature is 80° C., and the decolorization time is 2 hours;

[0029] (4) After heating the decolorized solution to room temperature, centrifuge for 10 min at a speed of 5000 r / min, remove the filter residue, and collect the filtrate;

[0030] (5) The obtained water-soluble dietary fiber filtrate containing soybean hulls is heated at 80° C. and vacuum-concentrated to a solid content of 10%...

Embodiment 3

[0032] Embodiment 3 is the embodiment of another kind of drying method

[0033] (1) First crush the soybean hulls to 150 mesh;

[0034] (2) Take 1000 g of soybean hulls that have been crushed to 150 mesh, add 30 kg of water, stir at a speed of 100 r / min for 10 min, incubate at a temperature of 110 ° C for 2 h, cool down to room temperature, and carry out centrifugal precipitation at a speed of 5000 r / min for 10 min to remove Sediment, collect filtrate;

[0035] (3) Adding 30 g of hydrogen peroxide with a mass percentage concentration of 30% in the obtained filtrate for decolorization, the decolorization temperature is 60° C., and the decolorization time is 1 h;

[0036] (4) adding 20 g of a solution of cellulase with a mass concentration of 50% to the solution after heating and decolorization, incubating for 1 h at 55° C., centrifuging at a speed of 5000 r / min for 10 min, removing the filter residue, and collecting the filtrate;

[0037] (5) The obtained water-soluble dietar...

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Abstract

The invention relates to a method for preparing soybean hull water-soluble dietary fibers. A preparation process comprises the following steps of: (1) grinding soybean hulls; (2) adding water into the ground soybean hulls, stirring, preserving heat, cooling to room temperature, performing centrifugal precipitation, removing sediments and collecting filtrate; (3) adding hydrogen peroxide into the obtained filtrate for de-coloring; (4) adding heated and de-colored solution into solution of cellulase, preserving heat, performing centrifugal separation, removing the sediments and collecting filtrate; (5) heating and concentrating the obtained filtrate which contains the soybean hull water-soluble dietary fibers; and (6) adding alcohol into concentrated solution obtained in the step (5), precipitating and centrifuging to obtain wet soybean hull water-soluble dietary fibers, refrigerating, drying and grinding so as to obtain the water-soluble dietary fibers. The soybean hull water-soluble dietary fibers prepared by the method has the characteristics of sufficient and readily available raw materials, industrialized production, no addition of any chemical reagent in a production process, accordance with the requirement of natural food, functionality, convenience, high purity and low cost.

Description

technical field [0001] The invention relates to a method for preparing water-soluble dietary fiber from soybean hulls, in particular to a method for preparing water-soluble dietary fiber from soybean hulls. Background technique [0002] Water-soluble dietary fiber is composed of galactose, arabinose, galacturonic acid, rhamnose, aldopentose, trehalose, glucose and other sugars, and its structure is rhamnogalacturonic acid as the main chain. There are galactan and arabinan combined on the side chain, the molecular weight is between 5kDa and 100kDa, and the structure is similar to pectin. [0003] Water-soluble dietary fiber is a biologically active substance, which has the function of lowering liver cholesterol, has the function of oligosaccharide (oligosaccharide) bifidus factor and regulates the activity of intestinal bifidobacteria, and has good oil absorption and water absorption. Its solubility is very good, and the viscosity of its aqueous solution is very low. It is o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/28A23L1/308A23L33/21
Inventor 周显宏余以刚武秀文
Owner 新疆早上好生态农业科技有限公司
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