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Preparation method and application of allulose

A technique of psicose and glucose, applied in the field of psicose preparation, can solve the problems of slow reaction speed, low D-psicose conversion rate, long time consumption, etc., achieves fast reaction speed and overcomes enzyme stability Poor performance, short time-consuming effect

Active Publication Date: 2015-03-25
SHANDONG FUTASTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above methods for preparing D-psicose are all carried out in the form of biological enzymes, but due to the influence of factors such as the stability, activity, and adaptability to the environment of biological enzymes, the conversion of D-psicose generally produced The efficiency is low, and the reaction speed is slow and time-consuming, so only low-quality D-psicose products can be prepared, which cannot meet the needs of the application market

Method used

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  • Preparation method and application of allulose
  • Preparation method and application of allulose
  • Preparation method and application of allulose

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Solution preparation: Take 1000g of glucose, add 9000g of pure water, and prepare 10000g of glucose solution with a mass percentage and mass concentration of 10%.

[0037] 2. Chemical isomerization reaction: Add 10g of ammonium molybdate according to 1% of the dry matter of glucose, adjust the pH value of the solution to 2.5, raise the temperature to 80°C, and keep it warm for 2 hours to make glucose isomerization into D-psicose , to obtain a mixture of D-psicose and glucose, the dry matter concentration of which is 8%, the purity of D-psicose is 28%, and the conductivity is 10000us / cm.

[0038] 3. Decolorization and filtration: When the isomerization liquid is at 70°C, add 10g of powdered activated carbon according to 1% of its dry matter mass, keep it warm and stir for 30 minutes, and filter it with a plate and frame filter to obtain the isomerization decolorization liquid. The index is: dry matter mass The concentration is 8%, the purity of D-psicose is 28.56%, an...

Embodiment 2

[0043] 1. Solution preparation: Take 3000g of glucose, add 7000g of pure water, and prepare 10000g of glucose solution with a mass percentage mass concentration of 30%.

[0044] 2. Chemical isomerization reaction: add 300g of ammonium molybdate according to 10% of the dry matter of glucose, adjust the pH value of the solution to 5.0, raise the temperature to 120°C, and keep it warm for 5 hours to make glucose isomerization into D-psicose , to obtain a mixture of D-psicose and glucose, the dry matter concentration of which is 28%, the purity of D-psicose is 35%, and the conductivity is 20000us / cm.

[0045] 3. Decolorization and filtration: Add 450g of powdered activated carbon to the isomerization liquid at 80°C according to 15% of its dry matter mass, keep it warm and stir for 40 minutes, and filter it with a plate and frame filter to obtain the isomerization decolorization liquid. The index is: dry matter mass The concentration is 28%, the purity of D-psicose is 35.27%, and t...

Embodiment 3

[0050] 1. Solution preparation: Take 2000g of glucose, add 8000g of pure water, and prepare 10000g of glucose solution with a mass percentage and mass concentration of 20%.

[0051] 2. Chemical isomerization reaction: Add 100g of ammonium molybdate according to 5% of the dry matter of glucose, adjust the pH value of the solution to 4.0, raise the temperature to 100°C, and keep warm for 3.5 hours to make glucose isomerization into D-psicose , to obtain a mixture of D-psicose and glucose, the dry matter concentration of which is 18%, the purity of D-psicose is 32%, and the conductivity is 15000us / cm.

[0052] 3. Decolorization and filtration: Add 200g of powdered activated carbon to the isomerization liquid at 75°C according to 10% of its dry matter mass, heat and stir for 35 minutes, and filter it with a plate and frame filter to obtain the isomerization decolorization liquid. The index is: dry matter mass The concentration is 18%, the purity of D-psicose is 32.17%, and the con...

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Abstract

The invention provides a preparation method and application of allulose. The preparation method comprises the following step: by adopting glucose as a raw material and adopting molybdate as a catalyst, performing catalytic conversion, separation and purification to obtain allulose with corresponding configuration. The method provided by the invention mainly comprises the following step: by adopting a chemical method, preparing a crystal allulose product by virtue of working procedures such as chemical differential phase isomerism, refined chromatography separation and purification, concentration and crystallization and the like by adopting glucose as the raw material. The preparation method provided by the invention is simple in process, short in time consumption, high in reaction speed and high in efficiency, and the problems that a conventional enzymatic method for preparing D-allulose products is poor in enzyme stability and low in efficiency and the like can be solved.

Description

technical field [0001] The invention belongs to the technical field of functional sugar production, and in particular relates to a preparation method and application of allulose. Background technique [0002] D-Psicose is a rare sugar that occurs naturally in nature. It is a new type of functional monosaccharide with special health functions. Its sweetness is equivalent to 70% of sucrose, and it has high solubility and extremely low calories. Value and hypoglycemic reaction, not easy to be metabolized by the human body after eating, almost no energy, no corrosion, and has good food processing characteristics, it can be used as an ideal substitute for sucrose in food. In August 2011, the U.S. Food and Drug Administration (FDA) identified D-psicose as a generally recognized safe food (GRAS), and it can be used as a component of food or food additives. Broad application prospects. [0003] Regarding the production of D-psicose, some people have studied D-fructose as a substra...

Claims

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Application Information

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IPC IPC(8): C07H3/02C07H1/00
Inventor 王成福方春雷杜瑞锋李林邱学良张亮黄伟红周娟曹玉华李毅
Owner SHANDONG FUTASTE
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