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Preparation method of high-quality burdock root dietary fiber

A dietary fiber and high-quality technology, applied in the field of food processing, can solve problems that have not yet been discovered, and achieve the effect of promoting application and improving conversion rate

Pending Publication Date: 2020-07-24
JIANGSU ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no report on the application of ultra-high pressure-enzymatic hydrolysis technology in the modification of burdock root dietary fiber

Method used

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  • Preparation method of high-quality burdock root dietary fiber
  • Preparation method of high-quality burdock root dietary fiber
  • Preparation method of high-quality burdock root dietary fiber

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Embodiment 1

[0025] The preparation method of high-quality burdock root dietary fiber of the present invention, such as Image 6 As shown, it specifically includes the following steps:

[0026] (1) Take the burdock root, wash it with water, cut it into thin slices of about 5mm, blanch it in boiling water for 60-90s, and dry it in a vacuum microwave oven with a power of 8W / g, a vacuum of -0.08MPa, and a batch ratio of 2 (open for 60s, stop for 30s), the drying time is 12min. Subsequently, the material was transferred to an electric blast drying oven to continue drying at 60° C. for 4 h. The dried burdock slices are pulverized in a tissue masher, and then passed through a 100-mesh sieve for subsequent use;

[0027] (2) Mix 100g burdock powder with 1L water, stir until completely dispersed, adjust the suspension to pH 7.0, add 8000μL neutral protease, enzymolyze at 40°C for 40min, inactivate the enzyme with boiling water for 10min; after cooling, adjust the solution to To pH 6.2, add 12000...

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Abstract

The invention discloses a preparation method of high-quality burdock root dietary fiber. The preparation method mainly adopts ultrahigh pressure pretreatment to improve the enzymolysis efficiency of complex enzyme and promote the conversion of water-insoluble dietary fiber IDF to water-soluble dietary fiber SDF. The invention uses the ultrahigh pressure treatment to change the spatial structure ofthe burdock root dietary fiber, thus increasing the biding of cellulase / beta-glucanase complex enzyme to glycosidic bonds and improving the conversion rate of SDF in a product. After the ultrahigh pressure treatment, the SDF content in the product is improved from 23.34% to 43.45%, the water holding capacity is improved from 12 mL / g to 15 mL / g, the oil absorption capacity is improved from 8 g / g dietary fiber to 10 g / g dietary fiber, and the expansibility is improved from 14 mL / g dietary fiber to 19 mL / g dietary fiber, so that the application of the burdock root dietary fiber in the field of functional food is greatly promoted.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a method for preparing high-quality burdock root dietary fiber. Background technique [0002] Burdock root is rich in dietary fiber, but the proportion of insoluble dietary fiber is relatively high (more than 90%), which affects various physical functions of the product, such as water absorption, swelling force, oil absorption, etc. The complex structure makes it difficult for cellulase to penetrate and react with glycosidic bonds, thereby reducing the conversion rate of IDF to SDF. Enzymatic extraction is an important way to prepare plant dietary fiber at present. It mainly has the following steps: 1) remove protein and starch in plant tissue by protease, α-amylase and glucoamylase; 2) add cellulase or cellulose and other The compound enzyme of the enzyme degrades and breaks the glycosidic bonds in the cellulose, thereby converting part of the insoluble dietary fiber (IDF) into s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/21
CPCA23L33/21A23V2002/00A23V2250/5116
Inventor 冯进李莹李春阳黄午阳崔莉柴智
Owner JIANGSU ACAD OF AGRI SCI
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