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Preparation method of isomaltitol

A technology for isomalt and isomalt, which is applied in the field of preparing isomalt and can solve the problems of affecting the production benefit of isomalt, affecting the production of isomalt, and keeping the production cost high. , to achieve the effect of improving the utilization rate of sucrose, reducing the generation of impurities and saving production costs

Active Publication Date: 2015-09-09
HUNAN ER KANG PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the process of sucrose conversion, in addition to isomaltulose, a relatively high proportion of by-products such as fructose, glucose, and trehalulose are formed, which not only seriously affects the crystallization and product quality of isomaltulose, but also makes the utilization of sucrose more difficult. Therefore, before crystallization, it is necessary to separate miscellaneous sugars by ion-exchange resin reverse adsorption, resulting in the use of a large amount of resin and a large amount of water in this process, which makes the production cost high and seriously affects the production of isomaltulose. The production of isomalt also affects the production efficiency of isomalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of preparation method of isomalt comprises the following steps:

[0023] (1) Use 40% sucrose solution as the raw material, adjust its pH to 5.5 with 2mol / L sodium hydroxide solution, and control the temperature at 25°C, then pass the sucrose solution through the immobilized cell reaction column with sucrose isomerase, and react After 30 minutes, glucose was added to obtain a conversion liquid containing isomaltulose and glucose;

[0024] (2) Add 0.1% activated carbon to the conversion solution prepared above for decolorization treatment, add ethanol to the crystals after filtration, dissolve and filter, set the temperature at 5°C, crystallize and recrystallize the filtrate, and separate isomaltulose crystals with a purity of 99.1%;

[0025] (3) Dissolving isomaltulose crystals and adding framework nickel to catalyze hydrogenation to obtain isomaltulose alcohol solution.

Embodiment 2

[0027] A kind of preparation method of isomalt comprises the following steps:

[0028] (1) Use 50% sucrose solution as raw material, adjust its pH to 5.5 with 2mol / L sodium hydroxide solution, and control the temperature at 25°C, then pass the sucrose solution through the immobilized cell reaction column with sucrose isomerase, and react After 30 minutes, glucose was added to obtain a conversion liquid containing isomaltulose and glucose;

[0029] (2) Add 1.0% activated carbon to the conversion liquid prepared above for decolorization treatment, add ethanol to the crystals after filtration, dissolve and filter, set the temperature at 7°C, crystallize and recrystallize the filtrate, and separate isomaltulose crystals with a purity of 99.3%;

[0030] (3) Dissolving isomaltulose crystals and adding framework nickel to catalyze hydrogenation to obtain isomaltulose alcohol solution.

Embodiment 3

[0032] A kind of preparation method of isomalt comprises the following steps:

[0033] (1) Use 55% sucrose solution as raw material, adjust its pH to 5.5 with 2mol / L sodium hydroxide solution, and control the temperature at 25°C, then pass the sucrose solution through the immobilized cell reaction column with sucrose isomerase, and react After 30 minutes, glucose was added to obtain a conversion liquid containing isomaltulose and glucose;

[0034] (2) Add 0.1% activated carbon to the conversion liquid prepared above for decolorization treatment, after filtration, add ethanol to the crystals to dissolve and filter, set the temperature at 10°C, crystallize and recrystallize the filtrate, and separate isomaltulose crystals with a purity of 99.4%;

[0035] (3) Dissolving isomaltulose crystals and adding framework nickel to catalyze hydrogenation to obtain isomaltulose alcohol solution.

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PUM

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Abstract

The invention discloses a preparation method of isomaltitol. The technological process comprises the following steps: (1) with a sucrose solution as a raw material, transforming the sucrose solution through sucrose isomerase to obtain the transformation liquid of isomaltulose and miscellaneous saccharides; (2) performing decoloration, low-temperature crystallization and re-crystallization on the obtained transformation liquid to obtain a high-purity isomaltulose crystal; and (3) performing catalytic hydrogenation with skeletal nickel to obtain isomaltitol. According to the method disclosed by the invention, in the first step, the yield of isomaltulose is increased by adding glucose in the reaction process, and the generation of other miscellaneous saccharides is reduced; and in the second step, the low-temperature crystallization and re-crystallization method is selected according to the solubility difference between isomaltulose and miscellaneous saccharides so as to remove the miscellaneous saccharides. The whole synthesis method is simple in process, the energy is remarkably saved, the production efficiency is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to a method for preparing isomalt with sucrose solution as raw material. technical background [0002] Isomalt, also known as Palatinitol, is called Isomalt in foreign countries, Isomalt or Hydrogenated isomaltulose in English, is an emerging functional edible sugar alcohol in the world in recent years, and is an ideal sugar substitute . Its unique physical and chemical properties, physiological functions and use safety have been fully confirmed by experiments, and it has been given the highest level of food safety "GRAS (Generally Recognized as Safe)" by the US FDA, and its daily intake is not limited. It can be used in candy, beverage, chocolate, chewing gum, ice cream, jelly, jam, pastry, etc. [0003] Isomalt is composed of α-D-glucofuranosyl-1,6-D-sorbitol (α-D-Glucopyranosyl-1,6-D-sorbitol; GPS) and α-D-glucofuranosyl -1,1-D-mannitol (α-D-Glucopyranosyl-1,1-D-sorbitol; GPM) mixed. The existing process of preparing isomal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/24C12P19/12
Inventor 帅放文王向峰章家伟
Owner HUNAN ER KANG PHARMA
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