Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Glutamic acid extraction technology in production of glutamic acid by fermentation method

An extraction process, a technology for glutamic acid, applied in fermentation, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of affecting yield, cumbersome steps, difficult separation, etc., to achieve good product quality, reduce consumption, improve The effect of production efficiency

Inactive Publication Date: 2005-03-23
徐昌洪
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of concentration is to improve the yield and reduce emissions, but the disadvantages of this method are: ①Concentrate first, and then adjust the isoelectric point to crystallize. If the concentration of glutamic acid is too high, it is easy to produce β-type crystals, causing separation difficulties. Product quality cannot be guaranteed; ②In acidic conditions, glutamic acid will be converted into pyroglutamic acid during the concentration process of the isoelectric point crystallization mother liquor of glutamic acid, which will affect the yield
Although this method solves the problem of inorganic salt accumulation, it still cannot avoid the conversion of glutamic acid into pyroglutamic acid, and then acid hydrolysis, the steps are cumbersome; impurities such as protein and residual sugar will accumulate in the process, which will affect product quality

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Glutamic acid extraction technology in production of glutamic acid by fermentation method

Examples

Experimental program
Comparison scheme
Effect test

example

[0036] 1. After the fermentation, the glutamic acid fermentation broth is sterilized above 100°C, and then the solids (mainly bacteria) in the fermentation broth are separated by ultrafiltration membrane. The process parameters are as follows:

[0037] Feed liquid composition: ammonium glutamate 13-14%, bacterial cells about 1.5%, soluble impurities about 2%;

[0038] Operating temperature: 80°C;

[0039] Operating pressure: 0.5Mpa;

[0040] PH value: 6~7;

[0041] Flux: 100L / m 2 .h.

[0042] 2. Centrifuge and dehydrate the concentrated retentate of ultrafiltration to obtain wet bacteria, and make protein feed after drying;

[0043] 3. In the glutamic acid filtrate obtained by ultrafiltration, the ammonium glutamate content is about 11%, and the impurity content is about 1%. Water (or crystallization mother liquor, desalination mother liquor) and sulfuric acid are added to reduce the glutamic acid concentration to 6.5-7.5%, PH=3.20-3.25, the temperature is raised to 75°C ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A process for extracting glutaminic acid in the procedure of preparing glutaminic acid by fermenting method includes such steps as sterilizing the fermented liquid, ultrafiltration, regulating pH=3.2-3.25, crystallizing, separation, washing to obtain the crystal of glutaminic acid and mother liquid, desalting part of mother liquid, merging part of desalted mother liquid with said fermented liquid regulating pH value of the rest, evaporation concentrating, regulating pH value, crystallizing, separation and washing.

Description

technical field [0001] The invention relates to a glutamic acid extraction process in the process of producing glutamic acid by fermentation, and belongs to the technical field of amino acid production by fermentation. Background technique [0002] Glutamic acid is mainly used to manufacture monosodium glutamate. Fermentative manufacturing of glutamic acid is the most widely used method at home and abroad. The manufacturing process mainly includes: starch saccharification, seed cultivation, fermentation, extraction and other processes. There are many techniques for extracting glutamic acid from fermentation broth, but they are still developing. The main methods are: [0003] 1. Extraction of glutamic acid by isoelectric point method [0004] 2. Extraction of glutamic acid by ion exchange [0005] 3. Zinc salt method to extract glutamic acid [0006] 4. Extraction of glutamic acid by hydrochloride method [0007] 5. Calcium salt method to extr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07C227/40C07C229/24C12P13/14
Inventor 徐昌洪金抒薛齐重徐德新
Owner 徐昌洪
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com