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Method for preparing crystal sorbitol from liquid glucose syrup

A technology of glucose syrup and sorbitol, which is applied in the preparation of sugar derivatives, chemical instruments and methods, and the preparation of hydroxyl compounds. It can solve the problems of lack of research and achieve the effects of reducing catalyst consumption, improving hydrogenation efficiency, and reducing the amount of evaporated water.

Pending Publication Date: 2022-03-15
ZHEJIANG HUAKANG PHARMA
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Method for preparing crystal sorbitol from liquid glucose syrup
  • Method for preparing crystal sorbitol from liquid glucose syrup

Examples

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Embodiment 1

[0030] The first embodiment of the method of utilizing liquid glucose syrup to prepare crystalline sorbitol of the present invention comprises the following steps:

[0031] Step (11), the starch is subjected to liquefaction treatment, saccharification treatment, and first refining treatment to obtain liquid glucose syrup, the concentration of the liquid glucose syrup is 33.5%, wherein the glucose content is 96.2%, the maltose content is 2.1%, and the maltotriose content is 1.0% and 0.7% other larger polysaccharides.

[0032] Step (12), subjecting the liquid glucose syrup to nanofiltration treatment to obtain glucose serum and glucose concentrate respectively, the concentration of the glucose serum is 30%, wherein the glucose content is 98.7%, and the other sugar content is 1.3%. The concentration of the glucose concentrate is 35.6%, and the glucose content is 76.7%. The concentrate is collected for other use.

[0033] Step (13), carry out the first concentrated treatment of t...

Embodiment 2

[0036] The second embodiment of the method of utilizing liquid glucose syrup to prepare crystalline sorbitol of the present invention comprises the following steps:

[0037] Step (21), the starch is subjected to liquefaction treatment, saccharification treatment, and first refining treatment to obtain liquid glucose syrup, the concentration of the liquid glucose syrup is 32.0%, wherein the glucose content is 95.5%, the maltose content is 2.5%, and the maltotriose content is 1.0% and 1.0% other larger polysaccharides.

[0038] Step (22), subjecting the liquid glucose syrup to nanofiltration treatment to obtain glucose serum and glucose concentrate respectively, the concentration of the glucose serum is 29%, wherein the glucose content is 98%, and the other sugar content is 2.0%. The concentration of the glucose concentrate is 35%, the glucose content is 75%, and the concentrate is collected for other use.

[0039] Step (23), carry out the first concentrated treatment of the gl...

Embodiment 3

[0042] The third embodiment of the method of utilizing liquid glucose syrup to prepare crystalline sorbitol of the present invention comprises the following steps:

[0043] Step (31), the starch is subjected to liquefaction treatment, saccharification treatment, and first refining treatment to obtain liquid glucose syrup, the concentration of the liquid glucose syrup is 32.5%, wherein, the glucose content is 96%, the maltose content is 2.3%, and the maltotriose content is 0.8% and not more than 0.9% of other larger molecular polysaccharides.

[0044] Step (32), subjecting the liquid glucose syrup to nanofiltration treatment to obtain glucose serum and glucose concentrate respectively, the concentration of the glucose serum is 31%, wherein the glucose content is 99%, other sugar content is 1%, and the The concentration of the glucose concentrate is 37%, and the glucose content is 77%. The concentrate is collected for other use.

[0045] Step (33), carry out the first concentra...

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Abstract

The invention relates to a method for preparing crystal sorbitol by using liquid glucose syrup. The method comprises the following steps: carrying out liquefaction treatment, saccharification treatment, first refining treatment, nanofiltration treatment, first concentration treatment, hydrogenation treatment, second refining treatment, second concentration treatment and crystallization treatment on starch to produce the crystal sorbitol. According to the method, nanofiltration treatment is added before glucose hydrogenation, so that the content of glucose in glucose syrup is increased, the content of macromolecular polysaccharide is reduced, and the glucose hydrogenation efficiency is improved. And meanwhile, the whole production process of sorbitol is combined, and a nanofiltration procedure of hydrogenated liquid before crystallization is cancelled, so that the process arrangement is more reasonable. The hydrogenation reaction time is shortened, the catalyst consumption is reduced, the steam consumption is reduced, and the energy-saving and emission-reducing effects are obvious.

Description

technical field [0001] The invention belongs to the technical field of sorbitol preparation, in particular to a method for preparing crystalline sorbitol from liquid glucose syrup. Background technique [0002] The production method of liquid glucose syrup is mainly obtained by enzymatic hydrolysis, and the starch is obtained after liquefaction, saccharification, and refining. The syrup contains about 96% of glucose, and also contains about 2% of maltose, about 1% of maltotriose and about 1%. Other polysaccharides with larger molecules. [0003] The liquid glucose syrup is converted into a high-purity sorbitol liquid (content about 98%) after concentration, hydrogenation, decolorization, separation, mixed bed, and nanofiltration, and then concentrated and crystallized to produce crystalline sorbitol. The whole process requires a nanofiltration process to increase the sorbitol content. Because the concentration of the nanofiltration feed is too high, it will affect the separ...

Claims

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Application Information

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IPC IPC(8): C07C29/74C07C29/78C07C29/141C07C31/26C07H1/06C07H3/02
CPCC07H1/06C07H3/02C07C29/74C07C29/78C07C29/141C07C31/26
Inventor 陈升荣毛学军谢绍勋安延龙程雨晴刘玉玉汪晓斌
Owner ZHEJIANG HUAKANG PHARMA
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