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Preparation method of crystalline fructose

A technology for crystallizing fructose and fructose, which is applied in the field of preparation of crystallized fructose, can solve the problems of difficult crystallization operation and control of crystallized fructose, achieve the effects of simple and efficient process and equipment matching, improve utilization rate, and improve purity

Active Publication Date: 2010-02-03
ANHUI BBCA FERMENTATION TECH ENG RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this invention is to provide a kind of preparation method of crystalline fructose, to overcome the deficiencies in the prior art, solve the difficult problem of crystallization operation control in the production process of crystalline fructose

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of crystalline fructose of the present invention, comprises the steps:

[0029] 1) Chromatographic separation: starting from the fructose liquid produced by pretreatment of raw materials such as starch, sugarcane and Jerusalem artichoke, through chromatographic separation, the fructose content is increased to more than 95%, and the concentration is more than 25%. The mass percent concentration of the fructose liquid); the glucose content of another component obtained by chromatographic separation is 90%, and the concentration is more than 25%, which is sold after being concentrated;

[0030] The volume of the separating agent is 12L, the separating agent is chromatographic resin or synthetic zeolite for the separation of fructose liquid, 12 chromatographic columns, the temperature is 55°C, the residence time is 340s, the requirement of pure water for the analytical agent: conductivity <5μs / cm (20°C ), pH: 5.5~7.0 (20°C), feed concentration 40%, fe...

experiment example 2

[0043] The preparation method of crystalline fructose of the present invention, comprises the steps:

[0044] 1) Chromatographic separation: starting from the fructose liquid produced by pretreatment of raw materials such as starch, sugarcane and Jerusalem artichoke, through chromatographic separation, the fructose content is increased to more than 95%, and the concentration is more than 25%. The mass percent concentration of the fructose solution); the glucose content of another component obtained by chromatographic separation is 90%, and the concentration is more than 25%, and it is sold after being concentrated;

[0045] Separating agent volume 12M 3, The separating agent is chromatographic resin or synthetic zeolite for fructose liquid separation, 12 chromatographic columns, temperature 60°C, residence time 370s, analytical agent pure water requirements: conductivity <5μs / cm (20°C), pH: 5.5~7.0(20℃), feed concentration 60%, feed flow 0.48m / h, desorbent flow 0.72m / h, fruct...

Embodiment 3

[0058] The preparation method of crystalline fructose of the present invention, comprises the steps:

[0059] 1) Chromatographic separation: starting from the fructose liquid produced by pretreatment of raw materials such as starch, sugarcane and Jerusalem artichoke, through chromatographic separation, the content of fructose is increased to 97%, and the concentration is 30% (for the separated fructose The mass percent concentration of the liquid); the glucose content of another component obtained by chromatographic separation is 90%, and the concentration is 28%, which is sold after being concentrated;

[0060] The volume of the separating agent is 12L, the separating agent is chromatographic resin or synthetic zeolite for the separation of fructose liquid, 12 chromatographic columns, the temperature is 55°C, the residence time is 340s, the requirement of pure water for the analytical agent: conductivity <5μs / cm (20°C ), pH: 5.5~7.0 (20°C), feed concentration 40%, feed flow r...

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Abstract

The invention relates to a preparation method of crystalline fructose, which sequentially comprises the following steps: carrying out chromatography separation on fructose-glucose syrup, carrying oution exchange and nanofiltration operation on the obtained fructose liquid, then respectively carrying out concentration through a double-effect plate type evaporator and a scraper evaporator, mixing the concentrated fructose liquid with ethanol and finally carrying out crystallization, centrifugal separation and drying, thereby obtaining the crystalline fructose. The prepration method of the crystalline fructose adopts the nanofiltration separation technology, removes impurities which affect the crystallization and the quality of a finished product before the crystallization, improves the product quality and the crystallization yield, combines the high-efficient plate type evaporator with the scraper evaporator, reduces the evaporation temperature of the fructose and the residence time inthe evaporators and effectively prevents the thermal decomposition and the complex reaction of the fructose. Compared with the prior art, the crystalline fructose produced by the method has the advantages of high purity of the fructose, uniform crystalline particles, good color and luster, high crystallization rate and low unit cost.

Description

technical field [0001] The invention relates to the field of sugar production, in particular to a preparation method of crystalline fructose. Background technique [0002] At present, the production method of crystalline fructose in industry has three kinds according to the source of raw materials: one) take sucrose as raw material, obtain fructose glucose liquid through hydrolysis, separate fructose and glucose through chromatographic separation, obtain high-purity fructose liquid, high-purity fructose liquid Fructose undergoes ion exchange and concentrated crystallization to obtain crystalline fructose. 2) Use corn starch to generate glucose as raw material, carry out isomerization reaction by glucose isomerase, obtain fructose liquid, separate fructose and glucose through chromatographic separation, obtain high-purity fructose liquid, and then high-purity fructose liquid After ion exchange and concentrated crystallization, crystalline fructose is obtained. 3) Using inul...

Claims

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Application Information

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IPC IPC(8): C13K11/00
Inventor 李荣杰邓远德张学锋尚海涛
Owner ANHUI BBCA FERMENTATION TECH ENG RES
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