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A kind of preparation method of magnesium l-threonate

A technology of magnesium threonate and magnesium hydroxide, which is applied in the chemical industry and can solve the problem of low yield

Active Publication Date: 2018-08-31
ZHANG JIA GANG VINSCE BIO PHARM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The resulting product has higher purity, but the yield is not high

Method used

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  • A kind of preparation method of magnesium l-threonate

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Effect test

Embodiment 1

[0022] Dissolve 0.1mol of vitamin C in 500ml of water, stir to dissolve at room temperature, control the temperature, add 0.06mol of magnesium hydroxide to neutralize, then add 0.25mol of magnesium peroxide; After adding peroxidase to the solution, react at a temperature of 35°C for 0.5h; filter with suction, concentrate the filtrate to thick, add 90% aqueous ethanol solution dropwise to the concentrated solution, and let it stand for crystallization under temperature control; filter with suction to obtain L- Magnesium threonate crystals weighed 12.54g after drying, with a yield of 65% and a purity of 98.5%.

Embodiment 2

[0024] Dissolve 0.1mol vitamin C in 500ml water, stir to dissolve at room temperature, control temperature, add 0.06mol magnesium hydroxide to neutralize, then add 0.20mol magnesium peroxide; keep stirring, react at room temperature for 6h; After the oxidase, react at a temperature of 35°C for 0.5h; filter with suction, concentrate the filtrate until thick, add 90% aqueous ethanol solution dropwise to the concentrated solution, and crystallize under temperature control; filter with suction to obtain magnesium L-threonate After drying, the crystal weighed 11.48g, the yield was 59.5%, and the purity was 97.2%.

Embodiment 3

[0026] Dissolve 0.1mol vitamin C in 500ml water, stir to dissolve at room temperature, control temperature, add 0.05mol magnesium hydroxide to neutralize, then add 0.30mol magnesium peroxide; continue stirring, control temperature at 50°C for 3.5h; After adding peroxidase to the solution, react at a temperature of 35°C for 0.5h; filter with suction, concentrate the filtrate to thick, add 95% aqueous ethanol solution dropwise to the concentrated solution, and let it stand for crystallization under temperature control; filter with suction to obtain L- Magnesium threonate crystals weighed 11.81g after drying, with a yield of 61.2% and a purity of 97.0%.

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Abstract

The invention provides an industrial preparation method of magnesium L-threonate. According to the method, vitamin C is taken as a raw material, dissolved in a water solution and reacted with magnesium peroxide as an oxidizing agent, then peroxidase is added to a reaction system, residual oxidizing agent is removed, an ethanol water solution is used for crystallization, and magnesium L-threonate is prepared through normal-temperature crystal separation. The preparation method is screened out through process optimization, can be applied to industrial production, adopts a simple process and mild conditions, and is easy to operate and master, high in yield, environment-friendly and lower in cost.

Description

technical field [0001] The invention relates to a preparation method of magnesium L-threonate, which belongs to the field of chemical industry. Background technique [0002] Magnesium L-threonate is a food additive, which belongs to four-carbon polyhydroxy compounds, and is an efficient and safe magnesium nutritional supplement. Magnesium threonate is easier to metabolize and absorb in the human body than inorganic magnesium. Since L-threonate is a metabolite of L-ascorbic acid, it is safer when applied to the human body. Magnesium L-threonate can participate in the mediation of neuron activity, maintain the normal operation of cardiovascular, neuromuscular and nervous systems, and effectively improve magnesium deficiency and a series of related symptoms. Due to its high-efficiency biological activity and high safety, its research is more active and its application is more extensive. [0003] The synthesis of L-magnesium threonate has been reported in Chinese patent 991238...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C51/41C07C59/10
CPCC07C51/41C07C59/10
Inventor 彭学东张梅赵金召闫勇义弓旻
Owner ZHANG JIA GANG VINSCE BIO PHARM
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