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Preparing process of water caltrop stem dietary fiber

A technology of dietary fiber and water chestnut stem, applied in the preparation of water chestnut stem dietary fiber, to prepare a dietary fiber field, which can solve the problems of restricting the application of dietary fiber, complex production process, high cost of dietary fiber, etc., and achieve sufficient and easy-to-obtain raw materials and high purity , easy to save effects

Active Publication Date: 2007-06-27
广州萃取生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the raw materials for producing dietary fiber are relatively expensive at present, and the production process is complicated, so the cost of dietary fiber is relatively high, which limits the application of dietary fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 200kg of fresh water chestnut stems, remove the mud and leaves, cut into 0.1 ~ 1cm long, add 500kg of water, boil in hot water at 80°C for 30min, filter to remove the water, rinse once with clean water, add 400kg of 0.7wt% hydrogen peroxide, and oxidize with hydrogen Adjust the pH value to about 11 with sodium, heat to 50°C for decolorization for 2 hours, then filter and wash the filter cake until the eluate is colorless and the pH value is about 7. Then perform flash drying, the air inlet temperature is 200°C, the outlet air temperature is 85°C, the dried filter cake contains 10-30% water, after the filter cake is broken into uniform bulk materials, microwave drying and sterilization are carried out. Moisture is 5-13%. The dried material enters an ultrafine pulverizer for pulverization to obtain dietary fiber with a particle size of 150 mesh. The total dietary fiber content is greater than 90.0%, and the color is light yellow or light gray.

Embodiment 2

[0023] Take 200kg of fresh water chestnut stems, remove mud and leaves, add 500kg of water, boil in hot water at 100°C for 15min, filter, dry in the sun and then pulverize. Add an aqueous solution of 1wt% hydrogen peroxide that is 18 times the basis weight of water chestnut stems, adjust the pH value to about 10.5 with sodium hydroxide, heat to 45°C for 2.5 hours, then filter and wash the filter cake until the eluate is colorless and the pH value It is around 7. Then perform flash drying, the air inlet temperature is 200°C, the outlet air temperature is 85°C, the dried filter cake contains 10-30% water, after the filter cake is broken into uniform bulk materials, microwave drying and sterilization are carried out. Moisture is 5-13%. The dried material is put into an ultrafine pulverizer for pulverization to obtain dietary fiber with a particle size of 200 mesh. The total dietary fiber content is greater than 90.0%, and the color is light yellow or light gray.

Embodiment 3

[0025] Take 6kg of fresh water chestnut stems, remove mud and leaves, put them into a pressure reactor, add 24kg of water, heat to 130°C, gauge pressure 0.17MPa, keep warm for 5min, remove, and dry or dry in the sun. After the dried water chestnut stems are crushed, add an aqueous solution containing 1.2wt% hydrogen peroxide that is 17 times the weight of the dry water chestnut stems, adjust the pH value to about 11 with sodium hydroxide, heat to 45°C for decolorization for 2 hours, then filter and wash the filter cake until washed out The liquid is colorless, with a pH of around 7. The filter cake was vacuum-dried at a temperature of 65° C., and the dried material was pulverized in an ultrafine pulverizer to obtain dietary fiber with a particle size of 200 mesh. The total dietary fiber content is greater than 90.0%, and the color is light yellow or light gray.

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PUM

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Abstract

The present invention discloses preparation process of water caltrop stem dietary fiber. The preparation process includes the following steps: washing water caltrop stem and cutting; blanching for 5-30 min and dewatering; decolorizing with 0.01-2.0 wt % concentration hydrogen peroxide solution at 30-90deg.c and regulating pH value to 8-11 with sodium hydroxide; filtering, washing and vacuum drying or flash drying to water content of 10-30 %; crushing, microwave drying and sterilizing to water content of 5-13 %; and final superfine crushing in a superfine crusher to obtain the dietary fiber. The dietary fiber is used as food additive for producing biscuit, bread, etc. The dietary fiber features facile material, high purity, low cost, etc.

Description

technical field [0001] The invention relates to the preparation of dietary fiber, in particular to a method for preparing dietary fiber from water chestnut stems, specifically a method for preparing dietary fiber from water chestnut stems. Background technique [0002] Dietary fiber is a general term for a class of polymer components that cannot be digested by the human body and are mainly composed of polysaccharides. It mainly includes cellulose, hemicellulose, lignin, pectin, agar, etc. Since the 1960s, studies have found that Africans rarely suffer from "civilization diseases" in Western developed countries due to their frequent consumption of high-fiber foods. It has been confirmed that dietary fiber can safely regulate the body's blood sugar level and prevent constipation and colon cancer. , Increase satiety, prevent obesity, promote the proliferation of bifidobacteria and aerobic bacteria, enhance macrophage function, improve disease resistance and other physiological...

Claims

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Application Information

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IPC IPC(8): A23L1/212A23L1/277A23L1/308A23P1/06A23L33/22A23P10/30
CPCY02A40/90
Inventor 余以刚吴晖刘冬梅李晓风
Owner 广州萃取生物科技有限公司
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