Method for preparing liquid maltitol and liquid polyol from maltitol chromatography raffinate

A maltitol and raffinate technology, which is applied in the field of maltitol raffinate reuse, can solve the problems of affecting efficiency, long saccharification and fermentation time, etc., and achieve the effects of short production cycle, simple operation and good economic benefits

Active Publication Date: 2022-03-29
ZHEJIANG HUAKANG PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method uses glucoamylase to ferment to reduce the content of reducing sugars and oligosaccharides and increase the content of sorbitol, but the method takes a long time for saccharification and fermentation, which affects the efficiency

Method used

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  • Method for preparing liquid maltitol and liquid polyol from maltitol chromatography raffinate

Examples

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Embodiment 1

[0033] The first embodiment of the method for preparing liquid maltitol and liquid polyol by utilizing maltitol chromatographic raffinate of the present invention comprises the following steps:

[0034] The maltitol chromatographic raffinate is pretreated first to obtain a pretreatment solution with a refractive index of 49.5%, and then the pretreatment solution is subjected to hydrogenation treatment. Wherein, the hydrogenation reaction temperature was 137° C., the pH value of the hydrogenation reaction feed liquid was 5.9, and the hydrogenation reaction pressure was 7 MPa. The conversion rate of hydrogenation was determined to be 99.88%, and the content of reducing sugar in the feed liquid after hydrogenation was determined to be 0.13%.

[0035]The hydrogenated liquid is decolorized and dissociated in sequence to remove impurities, and then the post-treatment liquid is subjected to membrane separation treatment using membrane separation equipment to obtain a dilute liquid an...

Embodiment 2

[0040] The second embodiment of the method for preparing liquid maltitol and liquid polyol by utilizing maltitol chromatographic raffinate of the present invention comprises the following steps:

[0041] The maltitol chromatographic raffinate is pretreated first to obtain a pretreatment solution with a refractive index of 49.5%, and then the pretreatment solution is subjected to hydrogenation treatment. Wherein, the hydrogenation reaction temperature is 136° C., the pH value of the hydrogenation reaction feed liquid is 6.1, and the hydrogenation reaction pressure is 7.5 MPa. The conversion rate of hydrogenation was determined to be 99.85%, and the content of reducing sugar in the feed liquid after hydrogenation was determined to be 0.14%.

[0042] The hydrogenated liquid is decolorized and dissociated in sequence to remove impurities, and then the post-treatment liquid is subjected to membrane separation treatment using membrane separation equipment to obtain a dilute liquid a...

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Abstract

The invention relates to a method for preparing liquid maltitol and liquid polyhydric alcohol by using maltitol chromatographic raffinate, which comprises the following steps: hydrotreating the pretreated maltitol chromatographic raffinate to obtain hydrogenated liquid, and then post-treating the hydrogenated liquid to remove impurities to obtain post-treated liquid, the post-treatment liquid is subjected to membrane separation treatment to obtain thin liquid and enriched maltitol concentrated liquid, the thin liquid is directly used as liquid polyhydric alcohol, and the enriched maltitol concentrated liquid is blended with existing maltitol blending liquid with the maltitol content higher than 50%; the content of the maltitol is greater than or equal to 50%, and the liquid maltitol meets the national standard. Before the membrane separation treatment is adopted, the reducing sugar component in the sugar liquid is reduced by utilizing a hydrogenation method, the risk that the color turns yellow in the process is reduced, and the quality of the final product is improved. The method is simple to operate and short in production cycle, by-products are comprehensively utilized, and good economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of reutilization of maltitol raffinate, and particularly relates to a method for preparing liquid maltitol and liquid polyol by utilizing maltitol chromatographic raffinate. Background technique [0002] Maltitol is made of high-quality starch as raw material, which is liquefied and saccharified by enzyme preparation to obtain ultra-high maltose syrup (maltose content ≥ 85%), then hydrogenated to obtain maltitol liquid, and crystalline maltitol is obtained through processes such as decolorization, chromatography, and crystallization. Among them, the raffinate of the maltitol liquid after chromatographic separation, the main components include maltitol (15% to 40%), sorbitol (25% to 40%), oligosaccharide alcohol (35% to 45%) ), usually as a liquid polyol product with low added value. If part of the maltitol components can be separated out to produce liquid maltitol, the added value of the raffinate can be in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/04C07H1/06C07C29/74C07C29/90C07C29/76C07C31/26
CPCC07H15/04C07H1/06C07C29/74C07C29/90C07C29/76C07C31/26Y02P20/10
Inventor 姚彦辉韩新峰万富安岳航沈卫星戴豪君杨铭乾
Owner ZHEJIANG HUAKANG PHARMA
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