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Method for preparing magnesium aspartate

A technology of magnesium aspartate and aspartic acid, which is applied in the field of chemistry, can solve the problems of unstable product quality, unstable product pH value, low efficiency and the like, so as to improve production efficiency and product quality, and product quality is unstable. , the effect of reducing production costs

Active Publication Date: 2009-10-21
西藏中卫诚康药业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Its described yield of the technique of above-mentioned document method is the yield after circulation of mother liquor, and the actual yield without circulation is about 70%, even lower than 70%, and its technique is in laboratory scale (as less than 1kg) It can achieve a better realization, but in the actual large-scale production, there are disadvantages such as a significant increase in cost and unstable product quality through the recycling of mother liquor. A large number of mother liquor treatment will inevitably greatly increase energy costs and prolong the preparation cycle. The efficiency is low, and the impurities in the mother liquor Repeated recycling causes the cumulative increase of impurities in the mother liquor, which affects the quality consistency and stability of the products between batches, and brings potential safety hazards. However, the process of the present invention overcomes the above-mentioned technical defects, and has high process efficiency, low cost and high product yield. , and the quality is stable
[0014] The difference between the present invention and the traditional spray-drying method (i.e. the reaction liquid of magnesium salt and aspartic acid, the dry powder prepared by the spray-drying process) is that the method of the present invention is solvent crystallization, and the traditional spray-drying process can be more efficient The magnesium aspartate raw material is obtained, but it also has the problem of being unable to effectively remove the impurities introduced by the raw material, the pH value of the product is unstable, the content ratio of magnesium and aspartic acid is unstable, and the related substances are relatively high. bring security risks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 1340 liters of purified water in the flask, add 20.1 kilograms of magnesium oxide under stirring, after all dissolve, add 133.1 kilograms of L-aspartic acid. After the addition is complete, reflux for 2 hours, and adjust the pH of the solution to 5.5-7.5 with magnesium oxide or aspartic acid. After filtration, the filtrate was evaporated under reduced pressure to remove about 80% of the solvent (water), and the obtained viscous substance was added to 1340 liters of ethanol at -40° C. under stirring, and a large amount of solids were formed while stirring. After adding, let stand for 1 hour. Centrifuge and dry under reduced pressure at 50°C to obtain 157.06 kg of magnesium L-aspartate, with a yield of 96.8%. The structure of the magnesium L-aspartate prepared in this example was confirmed, consistent with that reported in the literature.

Embodiment 2

[0027]Add 1400 milliliters of purified water in the flask, add 42.1 grams of magnesium carbonate under stirring, then slowly add 133.1 grams of L-aspartic acid. After the addition is complete, reflux for 2 hours, and adjust the pH of the solution to 5.5-7.5 with magnesium oxide or aspartic acid. After filtration, about 70% of the solvent (water) was evaporated from the filtrate under reduced pressure, and the obtained viscous substance was added into 1400 ml of ethanol at -80° C. under stirring, and a large amount of solids were formed while stirring. After adding, let stand for 1 hour. After centrifugation and vacuum drying under reduced pressure at 50°C, 157.38 g of magnesium L-aspartate was obtained, with a yield of 97.0%. The structure of the magnesium L-aspartate prepared in this example was confirmed, consistent with that reported in the literature.

Embodiment 3

[0029] Add 1200 milliliters of purified water in the flask, add 73 grams of magnesium bicarbonate under stirring, then slowly add 133.1 grams of L-aspartic acid. After the addition is complete, reflux for 2 hours, and adjust the pH of the solution to 5.5-7.5 with magnesium oxide or aspartic acid. After filtration, about 85% of the solvent (water) was evaporated from the filtrate under reduced pressure, and the obtained viscous substance was added into 1200 ml of -60°C ethanol with stirring, and a large amount of solids were formed while stirring. After adding, let stand for 1 hour. After centrifugation, vacuum drying under reduced pressure at 50°C, 157.71 g of magnesium L-aspartate was obtained, with a yield of 97.2%. The structure of the magnesium L-aspartate prepared in this example was confirmed, consistent with that reported in the literature.

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PUM

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Abstract

A method for preparing magnesium aspartate, which belongs to the field of chemistry, is mainly characterized in that magnesium salt and aspartic acid are added to water so that part or all of the water is removed after the reaction, and the residue is added to a water-miscible non-aqueous Compared with the prior art, the method of precipitating a solid in a solvent, crushing and drying to obtain a finished product has the advantages of significantly increasing product yield, reducing production cost, improving production efficiency and product quality, and the like.

Description

technical field [0001] The invention relates to a preparation method of chemical raw materials, in particular to a preparation method of magnesium aspartate, belonging to the field of chemistry. Background technique [0002] Magnesium Aspartate is the magnesium salt of aspartic acid and is an electrolyte supplement. Aspartic acid is the precursor of oxaloacetate in the body, plays an important role in the tricarboxylic acid cycle, promotes energy metabolism, and is a catalyst for the synthesis and decomposition of high-energy phosphate compounds; participates in the production of nucleotides, and is an important substance for cell repair and regeneration ; Can promote the excretion of bile and bile pigment, have the effects of jaundice, reduce liver fat, increase liver glycogen, etc.; promote the development and differentiation of T lymphocytes into mature T lymphocytes, and have antiviral and antitumor effects. At the same time, aspartic acid also participates in the ornit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C229/24C07C227/00A61K31/198A61K9/08A61P3/12
Inventor 黄少林胡军刘烽王飞张勇
Owner 西藏中卫诚康药业有限公司
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