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A kind of preparation method of dl-sodium hydrogen malate

A technology of sodium hydrogen malate and disodium malate, applied in the field of preparation of DL-sodium hydrogen malate, can solve the problems of complicated operation, low yield and the like, and achieves easy operation, high raw material utilization rate and product yield. high effect

Active Publication Date: 2016-06-15
ANHUI XUELANG BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional organic acid salts are mostly prepared from solutions. The disadvantage of this method is that the operation is complicated and the yield is not very high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh 1.34g (0.01mol) of DL-malic acid and 2.32g (0.01mol) of disodium DL-malate crystals in a mortar, mix well, grind vigorously for 1 hour, put the powder in a vacuum oven, and store at 50°C After drying for 30 minutes, 3.06 g of solid powder was obtained, with a yield of 98.0%.

Embodiment 2

[0016] Weigh 2.68g (0.02mol) of DL-malic acid and 4.64g (0.02mol) of disodium DL-malate crystals in a mortar, mix well, grind vigorously for 1 hour, put the powder in a vacuum oven, and store at 50°C After drying for 30 minutes, 6.16 g of solid powder was obtained, with a yield of 98.7%.

Embodiment 3

[0018] Weigh 3.48g (0.026mol) of DL-malic acid and 4.64g (0.02mol) of disodium DL-malate crystals in a mortar, then add 0.32g (0.003mol) of anhydrous sodium carbonate, mix well, and grind vigorously After 40 minutes, the powder was placed in a vacuum drying oven and dried at 50° C. for 30 minutes to obtain 7.12 g of solid powder with a yield of 99.2%.

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PUM

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Abstract

The invention discloses a preparation method of DL-sodium hydrogen malate and relates to the technical field of organic acid salt preparation. The DL-sodium hydrogen malate is prepared by the following steps: in the presence of little anhydrous sodium carbonate, mixing a DL-disodium malate trihydrate crystal with a solid DL-malic acid, and grinding for reaction in a solvent-free condition. According to the preparation method disclosed by the invention, the DL-sodium hydrogen malate is prepared by a solvent-free solid grinding reaction method; and the preparation method has the characteristics of simplicity and convenience in operation, high utilization rate of raw materials and high product yield, is free from environmental pollution and conforms to the idea of green chemistry.

Description

Technical field: [0001] The invention relates to the technical field of organic acid salt preparation, in particular to a preparation method of DL-sodium hydrogen malate. Background technique: [0002] DL-sodium hydrogen malate is a good food additive, because it can increase the freshness of food and give it a good taste, it is widely used in aquatic products and meat products. Because it has a certain degree of saltiness, it can be used as a substitute for table salt in food processing and can reduce the amount of table salt used. In addition, since the content of sodium in DL-sodium hydrogen malate is lower than that of table salt, using DL-sodium hydrogen malate instead of table salt is more suitable for patients with high blood pressure, kidney disease and heart disease. [0003] Most of the traditional organic acid salts are prepared from solution. The disadvantage of this method is that the operation is complicated and the yield is not very high. Therefore, how to e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C59/245C07C51/41
CPCC07C51/412C07C59/245
Inventor 李云政万玉青高乃勋
Owner ANHUI XUELANG BIOTECHNOLOGY CO LTD
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