Method for separating remaining sugar and extracting organic acid from organic acid fermentation liquor and corresponding organic acid mother liquor

A technology for organic acid ions and organic acids, which is applied in the field of separating residual sugar to purify and prepare organic acid products, can solve the problems of serious resin surface pollution, degradation and loss of effective components, and increase energy consumption for concentration, and achieves low production cost, resin High utilization rate and good separation effect

Inactive Publication Date: 2006-02-15
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process uses hydrogen resin to adjust the pH value to the isoelectric point of the protein and then heats it to remove the protein. It consumes energy and causes the degradation loss of active ingredients. Decrease, and pass through the resin column twice, bring in a lot of water, increase energy consumption during concentration
In this process, a large amount of acid-base regeneration resin needs to be used, causing serious environmental pollution and requiring three-waste treatment

Method used

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  • Method for separating remaining sugar and extracting organic acid from organic acid fermentation liquor and corresponding organic acid mother liquor
  • Method for separating remaining sugar and extracting organic acid from organic acid fermentation liquor and corresponding organic acid mother liquor

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preparation example Construction

[0041] In the preparation method of the bulk resin of the present invention, the reaction conditions of the suspension polymerization may be well-known suspension reaction conditions in the art. In a preferred example of the present invention, the reaction temperature of the suspension reaction is 60-110°C, preferably 75-90°C, the pressure is normal pressure, and the reaction time is 4-10 hours, preferably 6 to 7 hours.

[0042] 2. Basic anionic functionalization of resin matrix

[0043] The body resin synthesized by the present invention is, for example, a gel or macroporous network cross-linked interpolymer containing acrylate groups and / or methacrylate groups, and the body resin is swollen under divinylbenzene or acetophenone With diethylenetriamine, triethylenetetramine, tetraethylenepentamine, polyethylene polyamine and other amines (-CONH(C 2 h 4 NH) 2 H, -CONH (C 2 h 4 NH) 3 H, -CONH (C 2 h 4 NH) 4 H) Aminolysis is carried out to obtain an acrylic acid series ...

Embodiment 1

[0065] Citric acid mother liquor: temperature 70°C

[0066] Resin type: Basic anion resin synthesized by 20% styrene and 80% methyl acrylate

[0067] Feed material: citric acid concentration 67%; residual sugar amount (after being diluted 10 times, represented by easy carbon index) 0.5

[0068] Pass this mother liquor through the simulated moving bed, and the operating conditions of the simulated moving bed are as follows: separation temperature 70°C, system pressure 1.1Mpa, feeding amount of feed liquid is 1L / h, feeding amount of eluting water is 3.5L / h, feeding 24 Equilibrium is reached after hours. The output obtained is as follows

[0069] Citric acid output: citric acid concentration 32%; residual sugar amount (expressed by easy carbon index) 0.04 (volume is 2 times of feed citric acid mother liquor)

[0070] Residual sugar discharge: citric acid concentration 1.1%; residual sugar amount (indicated by easy carbon index) 0.78 (volume is 3 times of feed citric acid mothe...

Embodiment 2

[0072] Lactic acid fermentation concentrate: temperature 70°C

[0073] Resin type: Basic anionic resin synthesized with 40% styrene and 60% methacrylic acid

[0074] Feed material: lactic acid concentration 45%; residual sugar amount (after being diluted 20 times, represented by easy carbon index) 0.88

[0075] Pass this mother liquor through the simulated moving bed, and the operating conditions of the simulated moving bed are as follows: separation temperature 70°C, system pressure 1.1Mpa, feeding amount of feed liquid is 1L / h, feeding amount of eluting water is 3.5L / h, feeding 24 Equilibrium is reached after hours. The output obtained is as follows

[0076]Lactic acid output: lactic acid concentration 21%; residual sugar amount (after being diluted 5 times, represented by easy carbon index) 0.03 (volume is 1.5 times of the feed lactic acid fermentation concentrate)

[0077] Residual sugar discharge: lactic acid concentration 0.4%; residual sugar amount (after being dilut...

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Abstract

The method relates to separate residue sugar for extracting organic acid from opposite fermentation liquor and mother liquor. Wherein, using said liquor as raw material and water as eluant to separate the organic acid and residue sugar completed with analog moving bed at 20~75Deg, and obtaining the objective constituent. This invention uses high-efficient chromatography to separate and prepare organic acid.

Description

technical field [0001] The invention relates to a method for separating residual sugar from organic acid fermentation broth and corresponding organic acid product mother liquor to purify organic acid. The technology of separating residual sugar from product mother liquor to purify and prepare organic acid products. Background technique [0002] Using glucose, sorbitol sugar and other reducing sugar nutrients as raw sugar, under the fermentation of corresponding enzymes and bacteria, organic acid products are produced, which have become many organic acids such as: citric acid, lactic acid, gulong acid, pyruvic acid, fumaric acid The main production methods of acid, kojic acid, succinic acid, itaconic acid, etc. During the fermentation process, the added raw sugar cannot be fully utilized; at the same time, in addition to the raw sugar, the nutrients added to the fermentation system often contain polysaccharides, non-reducing sugars, etc., which cannot be used by fermentation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/47
Inventor 彭奇均
Owner JIANGNAN UNIV
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