Process of producing sodium glutamate

A technology of sodium glutamate and new process, applied in the new process field of sodium glutamate production, can solve problems such as pollution of the environment

Active Publication Date: 2007-09-12
JIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a new production process of sodium glutamate, which can be

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Fermentation is carried out with glucose as raw material, wherein the glucose is 1 ton, and then Na is added to the fermentation liquid 2 CO3 and urea, the added urea and Na 2 The molar ratio of CO3 is: 1.5: 1, until the pH value of the fermentation liquid is 6.8, the fermentation liquid containing the crude product of sodium glutamate is obtained, and the fermentation liquid containing the crude product of sodium glutamate is then passed through a filter membrane with a pore size of 0.65 μm Carry out centrifugation, the rotating speed of centrifuge is 1500r / min, centrifugation 4min, the fermented liquid after centrifugation carries out separation and purification by anion exchange resin then, used anion exchange resin is made of cross-linked polymethyl acrylate in the presence of toluene and The macroporous acrylic acid series strongly basic resin produced by diethylenetriamine reaction followed by quaternization, the column temperature of the above-mentioned ion excha...

Embodiment 2

[0066] Carry out fermentation with glucose as raw material, wherein the glucose is 1 ton, then add sodium bicarbonate and ammonia water in the fermented liquid, the molar ratio of the added ammonia water and sodium bicarbonate is: 2.0: 1, until the pH value of fermented liquid is 7.0, obtain the fermented liquid that contains the crude product of sodium glutamate, the fermented liquid that contains the crude product of sodium glutamate is then filtered by a filter membrane with an aperture of 0.45 μm, then centrifuged, and the rotating speed of the centrifuge is 2000r / min, After centrifugation for 3 minutes, the fermented liquid after centrifugation is then separated and purified by an anion exchange resin. The anion exchange resin used is made by reacting cross-linked polymethyl acrylate with diethylene triamine in the presence of toluene, followed by quaternization. The macroporous acrylic acid series strong basic resin that takes, the column temperature of above-mentioned io...

Embodiment 3

[0069] Carry out fermentation with glucose as raw material, wherein the glucose is 1 ton, obtain fermented liquid, then add sodium hydroxide and urea in fermented liquid, the molar ratio of added urea and sodium hydroxide is: 2.5: 1, until fermented liquid The pH value is 7.0, obtains the fermented liquid that contains the crude product of sodium glutamate, the fermented liquid that contains the crude product of sodium glutamate is filtered through the filter membrane that aperture is 0.35 μ m then, then carries out centrifugation, and the rotating speed of centrifuge is 2500r / min, centrifuged for 3min, the fermented liquid after centrifugation is then separated and purified by anion exchange resin, and the anion exchange resin used is to react with diethylenetriamine in the presence of toluene by cross-linked polymethyl acrylate, and then carry out quaternary The macroporous acrylic acid series strongly basic resin produced by amination, the column temperature of the above-me...

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Abstract

This invention provides a new technology of producing sodium glutamate, including the following steps: first, nitrogen source and alkali sodium are mixed and added into broth to get a broth containing sodium glutamate crude product and its pH is 6.8 to 7.2. Then the broth is filtered through the membrane and followed by centrifugation to get a centrifuged broth. The broth is isolated and purified through the ion exchange resin for, and the effluent is collected and condensed to get glutamate sodium after crystallization.

Description

technical field [0001] The invention relates to a new process for producing sodium glutamate, which belongs to the field of biochemical industry. Background technique [0002] Monosodium glutamate, that is, monosodium glutamate. It has very important functions and is widely used in food, medicine, industry and agriculture, etc.: [0003] The whole process of monosodium glutamate production can be divided into four process stages: 1. Pretreatment of raw materials and preparation of starch hydrolysis sugar; 2. Expanded seed cultivation and glutamic acid fermentation; 3. Extraction of glutamic acid; 4. Preparation of glutamic acid Monosodium glutamate and monosodium glutamate finished product processing. [0004] At present, there are two major problems in the production process of monosodium glutamate: [0005] 1. During the fermentation process of glutamic acid, with the continuous generation of glutamic acid, the pH value of the fermentation broth decreases continuously, ...

Claims

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Application Information

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IPC IPC(8): C12P13/14
Inventor 王为民李友明彭奇均
Owner JIANGNAN UNIV
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