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Process for hydrogenation of sugar alcohol

A sugar alcohol and process technology, applied in the direction of oligosaccharides, organic chemistry, chemical instruments and methods, etc., can solve the problems of multiple isomerization and side reaction losses, reduce the loss of isomerization and side reactions, and ensure The effect of high purity and guaranteed quality requirements

Inactive Publication Date: 2006-01-18
SHANGHAI RONGS HEALTH IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional hydrogenation process of maltose oligosaccharides uses a hydrogen pressure of 5.0Mpa and a temperature of 140°C. Due to the higher temperature, more isomerization and side reaction losses occur during the production process, and the color of the syrup turns yellowish brown.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0017] The high-purity isomaltooligosaccharide is vacuum evaporated to DS40-50%, adjusted to pH 7.5, pumped into the hydrogenation reactor, and the loading capacity is 2 / 3 of the volume of the reactor. 14% activated framework nickel was added. Replace the air with nitrogen for 3 times, then pass in hydrogen, and then replace the nitrogen with hydrogen for 3 times, so that the hydrogen concentration is greater than 99.5% purity. Then continue to add hydrogen to increase the pressure to 8.0Mpa, raise the temperature to 110°C, start stirring, and start the hydrogenation reaction.

[0018] Under the stable process conditions of maintaining low temperature and high pressure, hydrogenation is continuously added to promote the hydrogenation reduction reaction. When the hydrogen is no longer absorbed by the sugar solution, the reducing sugar is determined by 3,5-dinitrosalicylic acid colorimetry. When the reducing sugar ≤ 0.3, the reaction is terminated, and samples are continuously ...

Embodiment 2

[0020] The most critical issue in the hydrogenation process of isomalt oligosaccharide is to reduce the production of isomers as much as possible during the hydrogenation reduction reaction process. This embodiment detects the content of isomers produced during the reaction process of this process.

[0021] Adopt high-pressure and low-temperature hydrogenation process: Under the conditions of hydrogen pressure 8.0-10.0Mpa and temperature 100-120°C, 5 batches of isomalt-oligosaccharides were continuously produced. After testing, the amount of the two isomers was controlled at 3.07- 3.39%, which ensures that the content of isomalt oligosaccharide reaches 91.08-93.48%.

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Abstract

The present invention belongs to the field of industrial industry technology, and discloses one kind of high pressure and low temperature alditol hydrogenating process. Alditol is hydrogenated in the conditions of hydrogen pressure 8.0-10.0 MPa and temperature 100-120 deg.c. Compared with traditional alditol hydrogenating process at relatively high temperature, the process of the present invention has greatly reduced isomerization and side reaction loss and raised product purity.

Description

technical field [0001] The invention belongs to the field of food industry, and relates to a hydrogenation production process of sugar alcohol, more specifically, the invention relates to a method for producing sugar alcohol by using a high-pressure and low-temperature hydrogenation method. Background technique [0002] Isomaltooligosaccharide has remarkable unique bifidity factor function and wide processing applicability. Because of its unique physiological function, it has become an important functional food base material, which can be widely used in various health nutritional supplements and food industry middle. [0003] Converting high-purity isomalt-oligosaccharides into isomalt-oligosaccharides requires a hydrogenation process. [0004] The traditional hydrogenation process of maltose oligosaccharides uses a hydrogen pressure of 5.0Mpa and a temperature of 140°C. Due to the higher temperature, more isomerization and side reaction losses occur during the production p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H3/06C08B37/00C07C29/145
Inventor 谢海华鲍元兴王晟
Owner SHANGHAI RONGS HEALTH IND CO LTD
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