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Preparation method for high water-holding capacity and water-insolubility corn dietary fiber

A water-insoluble and dietary fiber technology, which is applied in food preparation, food science, application, etc., can solve the problems of insufficient physiological functions and low water holding capacity of water-insoluble dietary fiber, and achieve low cost, convenient operation and high effect Good results

Inactive Publication Date: 2013-05-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-insoluble dietary fiber derived from corn bran is not high in water holding capacity, and its physiological effects cannot be fully exerted in the application

Method used

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  • Preparation method for high water-holding capacity and water-insolubility corn dietary fiber
  • Preparation method for high water-holding capacity and water-insolubility corn dietary fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Firstly, the corn seed coats are screened, washed and dried. Use a pulverizer to pulverize and pass through a 100-mesh sieve. The fat content of corn husks is only about 4%, and the fat is removed by soaking in 6# solvent oil to obtain degreased corn husk powder and dried; the dried degreased corn husk powder and water are in a mass ratio of 1:10 Mix and stir to make a slurry, adjust pH=7.5 with dilute alkali; then add 1398 neutral protease, the enzyme amount is 2000u / gDS, enzymolyze at 45°C for 60min, then adjust pH=6 with dilute hydrochloric acid, add 0.2% (w / wDS) high-temperature-resistant a-amylase, hydrolyze at 100°C for 60 minutes, then cool down to 60°C to inactivate the enzyme to obtain a two-step enzymatic hydrolysis slurry; filter the enzymatic hydrolysis slurry, and add water to the obtained solid to make a slurry to adjust the slurry pH = 6.5 and add 0.1% (w / wDS) glucoamylase, continue hydrolysis at 58°C for 120 minutes, then heat to 90°C to inactivate the ...

Embodiment 2

[0049] Mix the above-mentioned water-insoluble corn fiber with 1600mL of distilled water, stir well, adjust the pH value to 6.2 with dilute hydrochloric acid, add 10mL of cellulase, control the temperature at 46°C, and enzymolyze for 120min; cool down the slurry after enzymolysis and suction filter, The obtained solid was washed with water, suction filtered, dried and ground to obtain 88.7 g of high water-holding non-water-soluble corn dietary fiber. Its water content is 9.6%, its water-insoluble fiber mass content is 76.2%, and its water holding capacity is 8.6g / gDS.

[0050] Example 3

Embodiment 3

[0052] Disperse the above wet solid in water and stir to form a slurry, the mass ratio of wet solid to water is 1:20, adjust the pH value to 6.2 with sodium hydroxide solution, add 8mL of cellulase, control the temperature at 43°C, enzymatically hydrolyze for 150min and then Inactivate the enzyme activity, suction filter the enzymatic hydrolysis slurry after cooling down, and obtain 68.7g of finished product after drying and pulverizing the obtained solid. gDS.

[0053] Example 4

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Abstract

The present invention provides a preparation method for high water-holding capacity and water-insolubility corn dietary fiber. The method is a multi-enzyme grading enzymolysis method, and comprises that: adopting processes of neutral protease enzymolysis, high temperature resistance-alpha amylase enzymolysis and glucoamylase combination enzyme enzymolysis; sequentially removing starch, greases, proteins and other impurities from corn bran to obtain pure water-insoluble corn fiber; adopting cellulase to carry out enzymolysis and modification to increase the water-holding capacity of the corn fiber to obtain the high water-holding capacity and water-insolubility corn dietary fiber, wherein the water-holding capacity of the high water-holding capacity and water-insolubility corn dietary fiber is changed into 8.83 g / gDS from the water-holding capacity of the corn bran of 3.44 g / gDS, the improvement range is 157%. The full- enzymolysis method adopted in the invention has characteristics ofrapidness, high performance and no chemical contamination, the equipment is simple, and the method is the potential modified method for the corn dietary fiber.

Description

technical field [0001] The invention relates to the preparation of water-insoluble dietary fiber, in particular to a preparation method of high-water-holding water-insoluble corn dietary fiber. Background technique [0002] Corn bran is a by-product produced in the production process of corn starch, and the quantity is very large. If it is not used rationally, it will not only waste resources, but also may cause environmental pollution. my country has very rich resources of corn husks, a by-product of corn processing. Using corn husks to prepare high-activity dietary fiber can reduce waste of resources, protect the environment, and improve the comprehensive development and utilization of by-products. [0003] The main components of corn bran are polysaccharides, hemicellulose, protein and water-insoluble fiber. It has high fiber content and is a source of dietary fiber with high quality and low price. The measured data of the main components of corn bran are shown in Table ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L1/308
Inventor 钟振声连小燕蔡佳振
Owner SOUTH CHINA UNIV OF TECH
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