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Technique for producing fruit sugar by using chicory to carry out hydrolysis

A chicory and fructose technology, which is applied in the production of sugar, sugar production, fructose, etc., can solve the problems of difficult to meet market demand and low fructose output, and achieve the effect of reducing production cost and improving product quality

Inactive Publication Date: 2005-08-31
NORTHWEST A & F UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0006] Chinese Patent Publication No. is that the patent application of CN1389468A discloses the method for producing inulin and fructooligosaccharide by direct membrane separation, only the fructose contained in the plant itself is separated from inulin and other components, and pure fructooligosaccharide and fructose are obtained, The yield of fructose produced in this way is low, and it is difficult to meet the needs of the market; the patent of Chinese Patent Publication No. CN1288472A mainly produces the technology of standard-grade chicory inulin that improves the average degree of polymerization, or carries out etherification, esterification, and carboxylation of inulin to obtain inulin. Chemicals, etc., obtained improved inulin, and there are no low-molecular monosaccharides, disaccharides, oligosaccharides, etc. in the products produced, so the so-called chicory inulin here refers to the usual meaning of inulin

Method used

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  • Technique for producing fruit sugar by using chicory to carry out hydrolysis
  • Technique for producing fruit sugar by using chicory to carry out hydrolysis
  • Technique for producing fruit sugar by using chicory to carry out hydrolysis

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preparation example Construction

[0053] 4. Preparation of high fructose syrup:

[0054] (1) Acid hydrolysis: the hydrolysis raw material obtained by the above 2 (2) is placed in a hydrolysis reactor, and the temperature is controlled at about 120-160° C. for 1-10 minutes to obtain a hydrolyzate. Filter to obtain crude fructose extract. In this reaction, the macromolecular fructose is completely hydrolyzed into monofructose at a pH value between 3-6 and without enzymes. The acid hydrolyzate contains 1-5% sugars, 8.7% impurities such as salts and pigments, and 4.7% protein, so further desalination and decolorization are required.

[0055] (2) Decolorization and desalination of high fructose syrup

[0056] ①The hydrolyzate is first filtered by ion exchange gel chromatography (DOWEX Monsophere) to remove ash, ②Then two ion exchange resin methods are used to remove protein: first use a strong acidic cation exchange resin (such as Dowex88) to elute at a temperature greater than 70°C , and then through a weakly a...

Embodiment 1

[0073] Embodiment 1: the production of raw element PPE

[0074] see figure 2 , carry out according to the preparation method of above-mentioned raw element, 10 kilograms of pulverized fresh chicory roots or 7 kilograms of chicory dry slices are leached and filtered in hot water with a temperature of 95 ° C, the ratio of solid to liquid = 1: 2 ~ 3, and the time is 30 minutes. That is to obtain a mixed solution rich in inulin; then adjust the fermented solution to pH 4.0 with endo-inulinase, temperature 50°C, sugar content 25%, time 12 hours; Spray-dried under the condition of ℃ to obtain 6.313 kg of brown-yellow extract chicory progenin (PPE).

example 2

[0075] Example 2: Production of high concentration oligosaccharides

[0076] see image 3According to the preparation method of the above-mentioned oligosaccharides, 10 kg of chicory fresh roots or dried chicory slices are leached and filtered in hot water at a temperature of 95 ° C, and after three times of countercurrent leaching and one slag washing process, the crude inulin extract is obtained , Cool the obtained inulin crude extract to 45°C, sterilize at 90°C and add lime milk to remove impurities, adjust the pH to 13.5, pass in carbon dioxide to remove excess calcium ions, and filter under reduced pressure, plate and frame filter machine or centrifuge to separate the precipitated impurities from the filtrate to obtain refined inulin extract;

[0077] Select a hollow fiber inorganic ultrafiltration membrane with a pore size of 0.2um to completely remove bacteria, solidified and water-soluble proteins, colloids, pigments and other insoluble substances, and decolorize the ...

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Abstract

A process for preparing pectose from witloof by hydrolysis features that the acidolsis is used to prepare the high-pectose syrup, the inulase is used to prepare chicorose mixture (PPE), the inulin endonuclease is used to prepare oligopectose by fermenting, and the inulin exonuclease is used to prepare the ultrahigh-pectose syrup by fermentation.

Description

technical field [0001] The invention belongs to the field of chemical extraction, in particular to a process for producing fructose by hydrolyzing chicory. Background technique [0002] Fructose is a form of stored energy in grains and has recently been widely used as a sweetener in the food industry because it is 1.5-1.7 times sweeter than sucrose and has low calorie content. The traditional method of producing fructose is to obtain glucose through acid hydrolysis or enzymatic hydrolysis of starch, and glucose produces fructose under the action of isomerase. The fructose in the fructose syrup obtained by this process is 42%. If you want to obtain high fructose syrup, you need to continue refining to obtain a fructose concentration of 55%. On the one hand, it cannot meet the fructose standard required by the industry, and the process is complicated. Raw materials are wasted and the cost is higher. Therefore, the production of fructose or fructo-oligosaccharides by acid hyd...

Claims

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Application Information

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IPC IPC(8): C12P19/02C13K11/00
Inventor 呼天明张存莉吴洪新
Owner NORTHWEST A & F UNIV
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