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Subcritical water extraction on dietary fiber and preparation method of dietary fiber

A subcritical water and dietary fiber technology, applied in the field of food processing, can solve the problems of unreported patents, and achieve the effects of simple production process, improved utilization rate and strong tolerance

Active Publication Date: 2014-03-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many research reports on the use of subcritical water extraction to pretreat environmental samples, sewage and soil for analysis. In recent years, subcritical water has been used to extract natural active ingredients such as volatile oil, flavonoids, polyphenols, and mushroomene. , saponins and anthrone substances, but there is no report on the subcritical water extraction of dietary fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 10g of degreased and dried rice bran powder, put it into the extraction kettle, pump 300mL of deionized water with pH 5.0 into the extraction kettle, control the pressure inside the extraction kettle to 20MPa, and the temperature to 100°C. After extraction for 60min, cool down at 4 000r / min Centrifuge for 8 minutes, collect the supernatant, and use conventional spray drying to obtain rice bran soluble dietary fiber powder (SDF). The yield is 6.5%, and the SDF content is 45.4%. The precipitate after centrifugation is dried with hot air, and the moisture content is less than 7%, which is insoluble dietary fiber (IDF). The IDF is crushed by a high-speed pulverizer (Fz-4 type, Wenling Baile Pulverizer Factory) and passed through 40 meshes. Sieve to get coarse powder. Then the coarse powder is sucked into the airflow ultrafine pulverizer (JCM-T50 type, Shanghai Huali Sofi Technology Co., Ltd.), the crushing pressure is controlled at 0.3MPa, the feeding speed is 4.0mg / se...

Embodiment 2

[0023] Take 50g of fresh apple pomace after squeezing the juice (water content 80%), put it into the extraction kettle, pump 100mL deionized water into the extraction kettle, control the pressure in the extraction kettle to 5MPa, and the temperature to 200°C. After extraction for 20min, cool down. Centrifuge at 4 000r / min for 8 minutes, collect the supernatant, and use conventional spray drying to obtain apple pomace soluble dietary fiber powder (SDF). The yield is 14.3% (by dry weight), and the SDF content is 67.4%. Aluminum foil bags and vacuumize and seal them for storage. The precipitate after centrifugation is dried with hot air, and the moisture content is less than 7%, which is insoluble dietary fiber (IDF). The IDF is crushed by a high-speed pulverizer (Fz-4 type, Wenling Baile Pulverizer Factory) and passed through a 40-mesh sieve. , get meal. Then the coarse powder is sucked into the airflow ultrafine pulverizer (JCM-T50 type, Shanghai Huali Sofi Technology Co., Ltd...

Embodiment 3

[0025] Take 10g of dried Flammulina velutipes powder, put it into the extraction kettle, pump 200mL of deionized water into the extraction kettle, control the pressure inside the extraction kettle to 6MPa, and the temperature to 150°C, extract for 30min, cool, centrifuge at 4000r / min for 8min, and collect the supernatant , using conventional spray drying to obtain Flammulina velutipes soluble dietary fiber powder (SDF), the yield rate is 3.5%, and the SDF content is 58.6%. The precipitate after centrifugation is dried with hot air, and the moisture content is less than 6%, which is insoluble dietary fiber (IDF). The IDF is crushed by a high-speed pulverizer (Fz-4 type, Wenling Baile Pulverizer Factory) and passed through a 40-mesh sieve. , get meal. Then the coarse powder is sucked into the airflow ultrafine pulverizer (JCM-T50 type, Shanghai Huali Sofi Technology Co., Ltd.), the crushing pressure is controlled at 0.3MPa, the feeding speed is 4.0mg / sec, and the particle size o...

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Abstract

The invention relates to subcritical water extraction on dietary fiber and a preparation method of the dietary fiber, and belongs to the technical field of food processing. The process comprises the following steps: performing pretreatment on raw materials, performing subcritical water extraction, centrifuging, drying, performing superfine grinding, sterilizing and packaging. By adopting the method, soluble dietary fiber and insoluble dietary fiber can be simultaneously prepared. The dissolution rate of the soluble dietary fiber (SDF) is high, after being prepared into superfine powder, the insoluble dietary fiber (IDF) is high in powder porosity and high in containment and has the characteristics of nature, trophism and convenience in bleeding and the like as the dispersity, the solubility and the adsorption of the materials are all fundamentally improved. The dietary fiber prepared by using the method can be used as raw materials, additives, dietary supplement and the like of products of food, beverage, healthcare products, medicines and the like. The production process is clean, an environment-friendly effect is achieved, process is simple and industrialization is easy to achieve.

Description

technical field [0001] The invention belongs to the technical field of food processing, and relates to an extraction method of dietary fiber and its preparation, in particular to a subcritical water extraction of dietary fiber and its preparation method. [0002] Background technique [0003] Dietary fiber (DF) is the sum of edible plant cells, polysaccharides, lignin and related substances that cannot be digested and absorbed by human endogenous enzymes. According to solubility, it can be divided into soluble dietary fiber (Soluble dietary fiber, SDF) and insoluble dietary fiber (Insoluble dietary fiber, IDF). SDF mainly includes oligosaccharides (isomaltooligosaccharides, inulin, etc.), resistant dextrin, modified cellulose, synthetic polysaccharides, and plant colloids, etc. IDF mainly includes cellulose, hemicellulose, and lignin. It has been proven that dietary fiber is an indispensable nutrient for a healthy human diet and plays an important role in maintaining a hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/308A23L33/21
CPCA23L33/21
Inventor 张海晖段玉清程燕翔柯佳佳韩娟
Owner JIANGSU UNIV
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