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Method for producing crystalline psicose based on chromatographic separation

A technology for allulose and chromatographic separation, applied in the field of chromatographic separation

Active Publication Date: 2022-06-28
山东兆光色谱分离技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the production process of allulose in the prior art still needs to be further improved in terms of the overall process setting, the separation efficiency of the allulose / fructose mixed solution, the purity / yield of the allulose product, in order to improve the quality of allulose. Improve product quality of ketose, reduce production cost, control equipment investment and operating expenses

Method used

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  • Method for producing crystalline psicose based on chromatographic separation
  • Method for producing crystalline psicose based on chromatographic separation
  • Method for producing crystalline psicose based on chromatographic separation

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Through the following steps, the silicic acid-titanic acid modified calcium strontium type strong acid cation exchange resin of the present embodiment is prepared:

[0047] (1) 500mL of hydrogen-type strongly acidic cation exchange resin (model 001x7, sieve the part with the outer diameter of the microspheres 0.2-0.4mm) soaked in water, put in a 2000mL plastic cup, and add 0.42mol / L calcium acetate aqueous solution at room temperature 1000mL was subjected to ion exchange, and after continuous stirring for 2h, the calcium concentration in the aqueous solution was detected to be lower than 0.002mol / L, drained, washed 4 times with 3000mL of water, and after washing, added water to a total volume of 650mL, poured into a glass bottle, sealed with a cap, and placed at 75°C The oven was placed in an oven for homogenization treatment for 120 hours, and it was converted into a calcium hydrogen type strong acid cation exchange resin. The calcium exchange degree of cations in the r...

Embodiment 2

[0053] Basically follow the steps (1)-(4) of Example 1 to prepare the silicic acid-titanic acid modified calcium strontium type strong acid cation exchange resin of this example, the main difference is that the hydrogen type used in step (1) is strong. The model of the acidic cation exchange resin is 001x3, the part of the outer diameter of the microspheres with an outer diameter of 0.2-0.4 mm is sieved, the concentration of the calcium acetate aqueous solution is 0.35 mol / L, and the calcium exchange degree of the cation in the detection resin is 88.5%; A highly acidic cation exchange resin of calcium hydrogen type, containing about 0.35wt% of silica and about 0.088wt% of titanium dioxide based on dry resin and silica; step (4) to obtain silicic acid-titanic acid modified calcium strontium Type strong acid cation exchange resin, the strontium exchange degree of the detected cations in the resin is 8.7%, and the calcium strontium exchange degree is 100%.

Embodiment 3

[0067] The titanic acid-free silicic acid-modified calcium-strontium-type strongly acidic cation exchange resin prepared in Comparative Example 6 was used as the chromatographic separation agent in this example for the separation of fructose and glucose.

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Abstract

The invention belongs to the technical field of chromatographic separation, and particularly relates to a method for producing crystalline psicose based on chromatographic separation, which mainly comprises the following steps of: preparing fructose diluent by taking F98 fructose and / or F98 fructose syrup as raw materials, performing isomerization reaction under the condition of psicose isomerase, and performing ion exchange desalination and chromatographic separation to obtain the crystalline psicose. The F99 psicose liquid, the F92 fructose liquid and the miscellaneous sugar liquid are obtained; the psicose liquid is concentrated, crystallized and dried to produce crystalline psicose with the purity of more than or equal to 99%; reusing the F92 fructose liquid; the chromatographic separation is carried out in a chromatographic separation system filled with silicic acid-titanic acid modified calcium strontium type strong acid cation exchange resin, the column temperature is 50-70 DEG C, and an eluent is water. The purity and yield of the psicose are high, and the separation cost of the psicose product per unit weight can be reduced by more than 30%.

Description

technical field [0001] The invention belongs to the technical field of chromatographic separation, in particular to a method for producing crystalline psicose based on chromatographic separation. Background technique [0002] D-psicose (abbreviated as psicose) is an isomer of glucose and fructose. It is a new type of sweetener that has received widespread attention recently. Its sweetness is about 70% of that of sucrose and varies with temperature. Small, sweet and delicate, taste similar to sucrose, less decomposition and utilization in the human body, can increase plasma insulin concentration, lower blood sugar, increase liver glycogen content, and also have antioxidant and neuroprotective effects; stability, safety It has good properties and can maintain its stable structure under a wide range of acid and alkali conditions. It can be used in foods with complex ingredients, and can partially or completely replace sucrose in various foods and beverages, especially functiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H1/06C07H3/02B01J39/05B01J39/16B01J39/26C12P19/02C12P19/24
CPCC07H1/06C07H3/02B01J39/05B01J39/16B01J39/26C12P19/24C12P19/02
Inventor 王兆光
Owner 山东兆光色谱分离技术有限公司