Method for preparing sodium glutamate by using glutamic acid fermentation broth.

A technology of sodium glutamate and ammonia glutamate, applied in fermentation, cyanide reaction preparation, chemical instruments and methods, etc., can solve the problems of discharge, acid-base consumption, large waste liquid, etc. The effect of less and high sterilization rate

Inactive Publication Date: 2017-11-10
CHENGDU LIANJIE MEMBRANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process for producing sodium glutamate in the present invention is energy-saving, environment-friendly, high-efficiency and high-quality, and solves the problems of massive consumption of acid and alkali and massive discharge of waste liquid

Method used

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  • Method for preparing sodium glutamate by using glutamic acid fermentation broth.
  • Method for preparing sodium glutamate by using glutamic acid fermentation broth.
  • Method for preparing sodium glutamate by using glutamic acid fermentation broth.

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Take the glutamic acid fermentation broth and use a high-speed centrifuge. Firstly, the bacterial cells in the glutamic acid fermentation liquid are separated to obtain a liquid containing ammonium glutamate. Bacteria are used to produce feed. Pass the above-mentioned fermented liquid with ammonium glutamate removed from bacteria through an ultrafiltration membrane to intercept residual sugar, pigment, protein, colloidal substances and other fermentation by-products, etc., to obtain an ammonium glutamate solution. The ultrafiltration retentate is combined with the aforementioned bacteria to produce feed. The obtained ammonium glutamate solution is neutralized with NaOH, the pH is controlled at 6-8, and the temperature is 60-80° C. to obtain the aqueous solution of sodium glutamate and ammonia. When the temperature is 60-80°C, use compressed air to remove the ammonia generated in the neutralizing solution, and then concentrate it to the initial concentrated solution wi...

Embodiment 2

[0038] The glutamic acid fermentation broth is taken, and the bacteria, residual sugar, pigment, protein, colloidal substances and other fermentation by-products in the glutamic acid fermentation broth are separated by an ultrafiltration membrane to obtain a liquid containing ammonium glutamate. The ultrafiltration retentate is used to produce feed. The above-mentioned fermented liquid of ammonium glutamate from which bacteria cells have been removed is passed through an ultrafiltration membrane to obtain an ammonium glutamate solution. The ultrafiltration retentate is combined with the aforementioned bacteria to produce feed. The obtained ammonium glutamate solution is neutralized with NaOH, the pH is controlled at 6-8, and the temperature is 60-80° C. to obtain the aqueous solution of sodium glutamate and ammonia. When the temperature is 60-80°C, use compressed air to remove the ammonia generated in the neutralizing solution, and then concentrate it to the initial concentra...

Embodiment 3

[0042]Take the glutamic acid fermentation broth, add flocculant to the glutamic acid fermentation broth to coagulate and flocculate the bacteria and impurities in the fermentation broth, and then use the conventional air flotation method to separate the solid from the liquid. The liquid containing ammonium glutamate obtained by separating bacteria, residual sugar, pigment, protein, colloidal substances and other fermentation by-products. The flocs obtained by air flotation are used to produce feed. The above-mentioned fermented liquid of ammonium glutamate from which impurities have been removed is refined through an ultrafiltration membrane to obtain an ammonium glutamate solution. The ultrafiltration retentate is combined with the aforementioned flocs to produce feed. The obtained ammonium glutamate solution is neutralized with NaOH, the pH is controlled at 6-8, and the temperature is 60-80° C. to obtain the aqueous solution of sodium glutamate and ammonia. When the temper...

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Abstract

The invention relates to the field of food industry, in particular to a method for preparing sodium glutamate by using glutamic acid fermentation broth. The method includes the steps of bacterium separation, filter membrane filtration, alkali liquor neutralization, deamination, filter membrane concentration, evaporation concentration and crystallization; then the finished product sodium glutamate is obtained, wherein the deamination is fermentation after ammonia absorption, the filter membrane concentration is nanofiltration membrane concentration, and the evaporation concentration is MVP concentration; the crystallization is low temperature succession crystallization, and the mother liquor of crystallization is mixed with a new material liquid for concentration and crystallization. The method is high in bacteria removal rate, few in bacteria residue and fast in taking effect in the process of bacterium separation, and reduces the production process; the sodium glutamate obtained by using filter membrane filtration, filter membrane concentration, evaporation concentration and crystallization has uniform color, strong umami and no sour taste,. The method has the advantages of energy conservation and environmental protection, and can efficiently produce the sodium glutamate with high quality.

Description

technical field [0001] The invention relates to the technical field of food industry, in particular to a method for preparing sodium glutamate from a glutamic acid fermentation liquid. Background technique [0002] Sodium glutamate is commonly known as monosodium glutamate, and its scientific name is monosodium glutamate (Monosodium Glutamate, referred to as MSG). Sodium glutamate is an important food additive, which can enrich and improve the flavor of food, and is widely used in food and food processing industries. my country is a big producer of sodium glutamate, with an annual output close to 2 million tons. Sodium glutamate is an important umami taste agent, which can enhance the fragrance. Sodium glutamate is widely used as a food flavoring agent, either alone or in combination with other amino acids. With the continuous development of biotechnology and the increasing demand for sodium glutamate, the output of sodium glutamate is increasing year by year, and sodium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C227/40C07C227/42C07C227/18C07C229/24C12P13/14A23L27/22A23K10/37
CPCA23K10/37A23L27/22C07C227/18C07C227/40C07C227/42C12P13/14C07C229/24Y02P60/87
Inventor 邱全国
Owner CHENGDU LIANJIE MEMBRANE TECH
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