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A device for removing d-fructose in d-psicose

A technique of psicose and fructose, which is applied in the field of light industrial equipment manufacturing, can solve the problem of high cost, achieve the effects of reducing production cost, realizing mass production, and solving pH value adjustment

Active Publication Date: 2018-05-08
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using enzyme engineering technology, using fructose as raw material to synthesize allulose by biocatalysis can reduce the production cost of allulose, but about half of the fructose is not converted when the reaction is balanced, and it needs to be removed to obtain high-purity allulone sugar, but the properties of fructose and allulose are very similar, it is difficult to separate the two, and the chromatographic separation technology commonly used at present has a high cost

Method used

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  • A device for removing d-fructose in d-psicose
  • A device for removing d-fructose in d-psicose

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1 Separation device for D-fructose and D-psicose

[0026] Such as figure 1 shown.

[0027] The device for removing D-fructose in D-psicose consists of an isomerization system 1, an oxidation system 2, a separation system 3, a storage tank 4 and a collection tank 5, wherein the isomerization system, oxidation system The separation systems are sequentially connected by liquid delivery pipes to form a circulation system;

[0028] in:

[0029] The isomerization system is made of glass and is a columnar container with a jacket layer. The container wrapped by the jacket layer is a reaction container 6 filled with solid glucose isomerase. The container is provided with a sample inlet 8 and an outlet. The sample port 9, its sample outlet is connected to the sample inlet 12 of the oxidation system by the delivery pipeline that is connected with the liquid delivery pump 19, and the interlayer of the coat layer is filled with circulating water, the circulating water sys...

Embodiment 2

[0030] Example 2 Using the device described in Example 1 to realize the removal of D-fructose in D-psicose

[0031] (1) Pretreatment of basic anion exchange resin: treatment method refers to GB5476-85 People's Republic of China national standard ion exchange resin pretreatment method;

[0032] ①Put the resin into a chromatographic column with an inner diameter of 3cm, and the height of the column bed is 30cm, and wash it repeatedly with pure water until there are no visible mechanical impurities in the sample and the water is clear;

[0033] ② Use 100mL 1N hydrochloric acid solution, 200mL pure water, 100mL 1N sodium hydroxide solution and 200mL pure water to pass through the resin layer from top to bottom. When using the reagent, make the liquid level 1cm higher than the resin layer to ensure that there are no air bubbles in the resin layer; this operation is performed twice;

[0034] ③The resin treated by ② is passed through the resin layer with 400mL 1N sodium hydroxide so...

Embodiment 3

[0043] Example 3 Crystallization of D-psicose

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Abstract

The invention discloses a device for removing D-fructose in D-psicose, which is composed of an isomerization system, an oxidation system, a separation system, a storage tank and a collection tank, wherein the isomerization system is a warm Controlled bioreactor filled with glucose isomerase; the oxidation system is a temperature-controlled bioreactor filled with glucose oxidase; the separation system is filled with alkaline anion exchange The resin chromatographic separator, the sequential connection of each system and tank constitute a complete circulation system. The device of the present invention is simple and quick to assemble, easy to use, solves the problem of separating and removing D-fructose in D-psicose, which is very close to its properties, and avoids the adjustment of pH and the increase of ion concentration during the operation process, and is effective. It is beneficial to the further purification of the product, realizes the additional utilization of the by-product gluconic acid, and has broad application prospects.

Description

technical field [0001] The invention provides a device for efficiently removing D-fructose in D-psicose, which belongs to the technical field of light industrial equipment manufacturing. Background technique [0002] Rare sugars are an important class of carbohydrates, which play very important functions in the fields of diet, health care, and medicine. D-Psicose is a rare sugar that exists very little in nature. It produces almost no calories after eating. It is a low-calorie sweetener. It also has important physiological functions such as lowering blood sugar, lowering blood lipids, scavenging active oxygen free radicals, and neuroprotection. Its unique function and medical value have attracted widespread attention, and it has become one of the hotspots of functional sugar research in recent years. Because the content of D-psicose in nature is very small, it is extremely difficult to extract, and the method of chemical synthesis has many by-products and is not easy to pur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/00C12M1/40C12M1/38
CPCC12M21/18C12M29/18C12M41/22C12M47/10
Inventor 林建强李灿林建群
Owner SHANDONG UNIV