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Method for preparing dietary fiber through solid-gas explosion

A dietary fiber and gas explosion technology, applied in food preparation, food science, application and other directions, can solve the problems of unfavorable grain seed coat dietary fiber industrial production and application, destruction of dietary fiber molecular structure, poor product quality characteristics, etc., and achieve production costs. The effect of low, high yield and convenient extraction

Active Publication Date: 2011-01-05
河南省农科院农副产品加工研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the chemical method is low, but the acid-base treatment destroys the molecular structure of dietary fiber, and the quality characteristics of the product are poor
However, the dietary fiber yield of the enzyme treatment method is low, and the cost is relatively high, which is not conducive to the industrial production of dietary fiber from grain seed coats and its application in actual production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The method for preparing corn bran dietary fiber by solid gas explosion, the steps are as follows:

[0029] (1) After the crushed corn husks passed through a 40-mesh sieve are completely submerged in water, soak for 30 minutes, drain and seal for 40 minutes to make the water balance and reach 100%.

[0030] (2) Put the corn husks treated in step (1) into the gas explosion device, seal it, heat it directly with an open flame, control the firepower so that the pressure in the gas explosion device rises to 0.6MPa for about 15min, and release the pressure instantly after holding the pressure for 30s , complete the gas explosion and collect the material.

[0031] (3) Add water 14 times its dry weight to the corn husks after gas explosion, and extract for 60 minutes at a temperature of 80° C. and a pH value of 5.

[0032] (4) Adjust the temperature to 60°C, adjust the pH to 5.0, add 10 mg / g substrate of medium-temperature α-amylase, and perform enzymolysis for 45 minutes; th...

Embodiment 2

[0036] The method for preparing corn bran dietary fiber by solid gas explosion, the steps are as follows:

[0037] (1) Spray the crushed corn husks passing through a 60-mesh sieve with water for 40 minutes, seal and wet for 60 minutes after draining, so that the moisture content reaches 180%.

[0038] (2) Put the corn husks treated in step (1) into the gas explosion device, seal it, adopt electric heating, control the voltage so that the pressure in the gas explosion device rises to 0.8MPa for about 15 minutes, and release the pressure instantly after holding the pressure for 60s , complete the gas explosion and collect the material.

[0039] (3) Add water 14 times its dry weight to corn husks after gas explosion, and extract for 60 minutes under the conditions of temperature 80° C. and pH value 5.

[0040] (4) Adjust the temperature to 60°C, adjust the pH to 5.0, add 10 mg / g substrate of medium-temperature α-amylase, and perform enzymolysis for 45 minutes; then adjust the pH...

Embodiment 3

[0044] The method for preparing corn bran dietary fiber by solid gas explosion, the steps are as follows:

[0045] (1) After the crushed corn husks passed through a 10-mesh sieve were completely submerged in water, soaked for 50 minutes, drained and then sealed and wetted for 90 minutes to make the water balance and reach 240%.

[0046] (2) Put the corn husks treated in step (1) into the gas explosion device, seal it, heat it directly with an open flame, control the firepower so that the pressure in the gas explosion device rises to 1.0MPa for about 20 minutes, and release the pressure instantly after holding the pressure for 90s. Complete the gas explosion and collect the material.

[0047] (3) Add water 14 times its dry weight to corn husks after gas explosion, and extract for 60 minutes under the conditions of temperature 80° C. and pH value 5.

[0048] (4) Adjust the temperature to 60°C, adjust the pH to 5.0, add 10 mg / g substrate of medium-temperature α-amylase, and perf...

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Abstract

The invention belongs to the technical field of preparation of dietary fibers, and particularly relates to a method for preparing the dietary fibers by using grain seed husks, such as corn husks and the like as raw materials and utilizing a solid-gas explosion technology, which comprises the following steps of: regulating the water content of the grain seed husks to 50-300 percent, and then placing into a sealed gas explosion device; raising the pressure of the gas explosion device to 0.4-1.2Mpa within 5-25 minutes, and retaining the pressure for 10-120 seconds and then instantaneously depressurizing; and adding water into the processed grain seed husks for extraction, removing the starch and the protein therein, modifying, separating and removing impurities to obtain the dietary fibers. The method has the advantages of simple operation, convenient and rapid extraction, abundant raw material sources and low production cost and can simultaneously obtain two types of high-quality corn-husk dietary fiber products with high purity and large yield, and both the yield and the physiological activity of the products are markedly improved.

Description

(1) Technical field [0001] The invention belongs to the technical field of preparation of dietary fiber, and in particular relates to a method for preparing dietary fiber by using a solid-state gas explosion technology using corn husks and other grain seed coats as raw materials. (2) Background technology [0002] Dietary fiber refers to edible plant components that can resist digestion and absorption in the small intestine of the human body and can be partially or fully fermented in the large intestine of the human body, including polysaccharides, oligosaccharides, lignin and related plant substances. According to its solubility, it can be divided into water-soluble dietary fiber and water-insoluble dietary fiber. The efficacy of dietary fiber has been widely recognized, and it is called the "seventh nutrient". It has been proved by scientific research that increasing the content of dietary fiber in the diet can reduce the incidence of cardiovascular and cerebrovascular di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/28A23L1/308A23L33/22
Inventor 王安建魏书信田广瑞
Owner 河南省农科院农副产品加工研究所
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