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Method for continuously extracting erythritol

A technology of erythritol and permeate, which is applied in the field of extraction, can solve the problems of low erythritol content and light transmittance, high evaporation and crystallization costs, and large production investment, so as to improve the content and light transmittance, Easy to operate and improve the effect of purity

Active Publication Date: 2018-01-09
四川绿沃创新环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Evaporation and crystallization of fermented erythritol directly requires large production investment, high cost of evaporation and crystallization, and low content and light transmittance of erythritol

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] In the method for continuously extracting erythritol of the present invention, first, a continuous ultrafiltration membrane is used to filter the erythritol fermentation liquid to filter out macromolecular impurities in the erythritol fermentation liquid. Wherein, the ultrafiltration membrane can be realized by using an ultrafiltration membrane with a pore size of 50KD-100KD, and an ultrafiltration membrane with a pore size of 50KD is used in this embodiment. Specifically, the erythritol fermentation liquid is clarified through a continuous ultrafiltration membrane, and the concentrated liquid is washed and filtered by continuously adding water, and the permeated liquid of the primary ultrafiltration is collected, and the concentrated liquid of the primary ultrafiltration is obtained at the same time. The mass percent concentration of erythritol in the primary ultrafiltration permeate is 18%-20%, and the mass percent concentration of erythritol in the primary ultrafiltra...

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Abstract

The invention discloses a method for continuously extracting erythritol. The method is characterized by comprising the following steps: (1) carrying out ultrafiltration; (2) carrying out nano-filtration; (3) washing and filtering; (4) concentrating; (5) evaporating and crystallizing. The method disclosed by the invention has simple steps and is convenient to operate; impurities in an erythritol solution can be removed by adopting membrane filtration, so that the content and the light transmittance of the erythritol can be improved; the content can reach 99.1 percent, the light transmittance can reach 95 percent and the yield reaches 99 percent; the erythritol is evaporated and crystallized after membrane filtration and concentration are carried out, and the production cost also can be reduced, so that the method disclosed by the invention is suitable for being popularized and applied.

Description

technical field [0001] The invention relates to an extraction method, in particular to a method for continuously extracting erythritol. Background technique [0002] Erythritol is a slightly sweet white crystal with a relative sweetness of 0.65. It has a cool feeling and low calorific value. Its calorific value is about one tenth of that of sucrose. It is suitable for foods that require the taste of sucrose, such as Chocolate and table sugar etc. Erythritol is soluble in water but has a low solubility, is easy to crystallize, and is not degraded by enzymes. It can only be excreted from blood to urine through the kidney (easy to be absorbed by the small intestine), and does not participate in glucose metabolism and changes in blood sugar. Suitable for diabetics. It will not ferment in the colon, which can avoid gastrointestinal discomfort. At the same time, erythritol is also used in organic synthesis and biochemical research. [0003] At present, the process for producin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/76C07C31/24
Inventor 邱全国武长安肖松林邱全伟
Owner 四川绿沃创新环保工程有限公司
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