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A kind of preparation method of isomalt

A technology for isomalt and isomalt, which is applied in the field of isomalt preparation 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: 2018-06-08
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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Abstract

A method for preparing isomalt, the process of which is as follows: (1) using sucrose solution as a raw material, converting the sucrose solution through sucrose isomerase to obtain a conversion solution of isomaltulose and miscellaneous sugars; (2) Decolorizing, low-temperature crystallization and recrystallization of the obtained conversion solution to obtain high-purity isomaltulose crystals; (3) using skeleton nickel to carry out catalytic hydrogenation to prepare isomaltulose. In the first step of the present invention, glucose is added in the reaction process to increase the yield of isomaltulose and reduce the generation of other miscellaneous sugars. In the second step, low-temperature crystallization and recrystallization are selected according to the solubility difference between isomaltulose and miscellaneous sugars to remove miscellaneous sugars. The whole synthesis method has simple process, greatly saves energy, improves production efficiency and saves cost.

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 Patents(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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