New production technique of sodium glutamate

A new technology, monosodium glutamate technology, applied in application, food preparation, food science, etc., can solve the problems of excessive dependence on sulfuric acid, large amount of waste water, and low quality of by-products, so as to avoid environmental protection pressure, reduce sewage discharge, and reduce production cycle shortened effect

Inactive Publication Date: 2009-07-29
山东阜丰生物科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the technical problems of excessive dependence on sulfuric acid in the production of monosodium glutamate in the prior art, the large amount of waste water produced,...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 After the starch raw material is fermented and matured in the fermenter, it is put into the tank to obtain 9.7m 3 Fermentation liquid, glutamic acid content is 11.6%. Two-stage membrane filtration is used to remove cell protein and macromolecular impurities. Firstly, ceramic microfiltration membrane is used to remove the cell body in the fermentation liquid. The rate is 1.2%. After microfiltration, the feed liquid is treated with ceramic ultrafiltration. After ultrafiltration, the light transmission of the feed liquid is 84%, and the removal rate of dry matter is 0.5%. The microfiltration residue is used to make high-quality protein feed, and the ultrafiltration residue is spray-dried to make organic fertilizer. After two-stage membrane filtration, the feed liquid becomes 12.3m due to the increase of washing water volume 3 , content 9.08%, product loss rate 0.7%; then the 12.3m after membrane filtration 3 Feed liquid, decolorize in a decolorizing tank, add po...

Embodiment 2

[0024] Embodiment 2 According to embodiment 1, put tank and obtain 100m 3 Fermentation liquid, glutamic acid content 11%, two-stage membrane filtration is used to remove bacterial protein and macromolecular impurities, first microfiltration membrane is used to remove bacterial cells in the fermentation liquid, after microfiltration, the light transmission of feed liquid reaches 40%, and the removal rate of dry matter 1.1%, after microfiltration, the feed liquid is subjected to ultrafiltration treatment. After ultrafiltration, the light transmission of the feed liquid is 85%, and the dry matter removal rate is 0.5%. The microfiltration residue is used to make high-quality protein feed, and the ultrafiltration residue is spray-dried to make organic fertilizer. After membrane filtration, the feed liquid becomes 120m due to the increase of washing water volume 3 , the content is 8.7%, the product loss rate is 0.5%; the feed liquid after membrane filtration is 120m 3 , decolorize ...

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Abstract

The invention discloses a novel process for producing monosodium glutamate, which comprises the following key points: performing two stages of membrane filtrations on a glutamic acid fermentation broth obtained through fermentation so as to eliminate mycoproteins and other macromolecular substances; performing decolorization through active carbons, sheet frame filtration, alkali neutralization and concentration on the fermentation broth; performing ammonia blowoff recycling in the process of the concentration; performing further decolorization through a particle carbon column; and performing concentration and crystallization to prepare the final product of the monosodium glutamate. The process achieves the procedure of converting the glutamic acid fermentation broth into sodium glutamate directly without extracting the glutamic acid, has the advantages of simple operation, short production period, low cost, less pollution, high added value of by-products, and the like, and solves the problems that the production of the monosodium glutamate by the prior art has over-dependence on sulphuric acid, high yield of wastewater and lower quality of the by-products.

Description

technical field [0001] The invention belongs to the technical field of monosodium glutamate production, and in particular relates to a new process for producing monosodium glutamate. Background technique [0002] Monosodium glutamate, chemical name sodium glutamate, is a condiment produced by fermentation of amino acid with the largest yield. In recent years, my country's monosodium glutamate industry has developed rapidly, and the sales volume of monosodium glutamate has increased year by year. According to statistics, my country's monosodium glutamate output was 1.19 million tons in 2003, and reached 1.913 million tons in 2007, accounting for more than 70% of the world's total monosodium glutamate production. [0003] The current production process of monosodium glutamate is: the glutamic acid fermentation liquid obtained by microbial fermentation, using "isoelectric point and ion exchange" to extract the glutamic acid precursor substance glutamic acid in the fermentation...

Claims

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Application Information

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IPC IPC(8): A23L1/228A23L27/22
Inventor 徐国华张春宇周丽林永贤庄会华
Owner 山东阜丰生物科技开发有限公司
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