New fermentation technology of sodium glutamate

A technology of sodium glutamate and extraction process, which is applied in the field of extraction process of sodium glutamate in the bio-fermentation industry, which can solve the problems of large-scale use of acid and pollution of sodium glutamate, and achieve improved water quality, large biomass, and improved treatment The effect of water volume

Active Publication Date: 2014-12-17
XINJIANG FUFENG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the traditional process, the present invention provides a method of using sodium carbonate instead of liquid ammonia to neutralize the fermentation liquid and directly produce sodium glutamate, so as to reduce the cost of fermentation raw materials and solve the problem of using a large amount of acid in the separation process of subsequent extraction problem, solve the pollution problem in the production process of sodium glutamate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Carry out fermentation with glucose as raw material, wherein the glucose is 1 ton, then add liquid ammonia and sodium carbonate solution in the fermented liquid, the molar ratio of liquid ammonia and sodium carbonate is 2: 1, obtain the pH that is 6.9 and contain sodium glutamate The fermentation liquid of the crude product, the two are added at the same time to obtain the fermentation liquid containing the crude product of sodium glutamate, and then the fermentation liquid containing the crude product of sodium glutamate is filtered through a plate frame or a micromembrane to remove bacterial protein and the micromembrane The pore size is 0.04 μm, centrifuged at 2000 r / min for 3 minutes, and the sterilized liquid is collected. The sterilizing solution is pumped into the decolorizing tank for decolorization treatment, and powdered activated carbon with a mass of 1.5% of the sterilizing solution is added to the decolorizing tank, the temperature in the decolorizing tank i...

Embodiment 2

[0052] Carry out fermentation with glucose as raw material, wherein the glucose is 1 ton, then add liquid ammonia and sodium carbonate solution in the fermented liquid, the molar ratio of liquid ammonia and sodium carbonate is 2: 1, obtain the sodium glutamate containing sodium glutamate that pH is 7.1 The fermented liquid of crude product, both add simultaneously, and the add-on of liquefied ammonia and sodium carbonate solution is adjusted according to the acid production progress of fermented liquid, the pH value of stable fermented liquid is 6.9, obtains the fermented liquid containing crude product of sodium glutamate , and then filter the fermented liquid containing the crude product of sodium glutamate through a plate frame or micro-membrane to remove bacterial protein, the pore size of the micro-membrane is 0.06 μm, centrifuge at 2000r / min for 5 minutes, and collect the sterilized liquid. The sterilizing solution is pumped into the decolorizing tank for decolorization t...

Embodiment 3

[0060] Get Xinjiang Fufeng monosodium glutamate production fermentation workshop waste water, according to the method of embodiment 1, the still bottom material enters the sewage treatment system, utilizes 50L buckets as test equipment and with stirring, takes 30L respectively, adds in two buckets, adjusts pH to be 7.0, and water temperature is 20 ℃, sampling and determination of COD, ammonia nitrogen, and total nitrogen data; the control group did not add the composite bacterial agent, and the experimental group added the composite bacterial agent in Example 1, and added 30 grams of microbial preparations per cubic meter of bottom material each time, and added daily Once, after one week of continuous dosing, samples were taken to measure COD, ammonia nitrogen, and total nitrogen data, and the treated wastewater fully met the discharge standard.

[0061] COD average removal rate Ammonia nitrogen average removal rate control group 6.7％ 8.3％ test group ...

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Abstract

The invention relates to a new fermentation technology of sodium glutamate. The technology includes following steps: adding liquid ammonia and sodium carbonate to a fermented solution of sodium glutamate at the same time for carrying out a reaction with a molar ratio of the liquid ammonia to the sodium carbonate being 2:1 to obtain a fermenting solution which contains a crude product of the sodium glutamate and is 6.9-7.1 in pH value; performing micro-membrane filtration, wherein hole diameters of the micro membrane are 0.04-0.06 [mu]m; performing centrifugation at 2000 r / min for 3-5 min; collecting a microorganism-removed solution and a precipitated bacterial protein; pumping the microorganism-removed solution to a decoloring pot for carring out a decoloration treatment; adding powdery activated carbon accounting for 1.5% of the mass of the microorganism-removed solution to the decoloring pot; controlling the temperature in the decoloring pot within 45-50 DEG C; performing concentration after the decoloration treatment being carried out for 30 min, wherein concentration parameters are described as follows: a temperature is 60-70 DEG C and a vacuum degree is -0.1 kpa; performing one-step crystallization to obtain a crude crystal of sodium glutamate; and performing purification and treating wastewater. The technology is economical and environmental protective and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of sodium glutamate extraction in the biological fermentation industry, and specifically provides a new extraction process of sodium glutamate. Background technique [0002] The chemical name of sodium glutamate is monosodium α-aminoglutarate, which is a salt formed by sodium ions and glutamate ions, in which glutamic acid is an amino acid and sodium is a metal element. The main ingredient of seasoning MSG commonly used in life is sodium glutamate. Monosodium glutamate is a commonly used flavoring agent in daily life, which can increase the umami taste of food and help improve the digestibility of food by the human body. In addition, sodium glutamate has very important functions and is widely used in food, medicine, industry and agriculture. [0003] The following problems exist in the production process of sodium glutamate at present: [0004] On the one hand: During the fermentation process, as the cont...

Claims

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Application Information

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IPC IPC(8): C07C229/24C07C227/18C07C227/40C02F3/34C02F103/32
Inventor 潘悦洪庄会华肖勇董爽
Owner XINJIANG FUFENG BIOTECH
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