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Soluble citrate preparation method

A technology of citrate and citric acid, applied in the fields of biochemical industry and food and medicine, can solve the problems of complicated production process of citrate, large investment in equipment and workshop, long production cycle, etc., and achieves low production cost, investment in equipment and workshop, etc. The effect of small size and less production pollution

Inactive Publication Date: 2015-03-18
刘瑞宁
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The current method for producing citrate has complex production process, many production steps, large investment in equipment and workshops, high production energy consumption, long production cycle, polluting the environment, and high production costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: citric acid monohydrate and lanthanum acetate monohydrate salt are ground respectively to 90 order ~ 100 order; Take 210 grams of citric acid and 334 grams of lanthanum acetate salt after grinding and mix evenly; 544 grams of citric acid and The mixture of lanthanum acetate salt is put into the reaction kettle of temperature 40 ℃ and mixed and ground; Mixed and ground for about 65 minutes; After cooling, about 365.8 grams of lanthanum citrate dihydrate in solid state with a purity of 99.5% were obtained; the dihydrate citric acid The solubility of lanthanum salt in purified water at 25°C is 3.1 g / 100 ml. The chemical reaction formula is:

[0030] La(Ac) 3 ·H 2 0+C 6 h 8 o 7 ·H 2 O=La(C 6 h 5 o 7 )·2H 2 0+3HAc

Embodiment 2

[0031] Embodiment 2: Grind citric acid monohydrate and calcium carbonate salt respectively to 90 order ~ 100 order; Take by weighing 420 grams of citric acid and 300 grams of calcium carbonate salt after grinding by 2:3 molar ratio and mix evenly; 720 The mixture of 1 gram of citric acid and calcium carbonate salt is put into the reactor of 70 ℃ of temperature and carries out mixing and grinding; Mixing and grinding about 80 minutes; Obtain about 593.5 grams of purity after cooling and be the calcium citrate pentahydrate of 99% solid form; The The solubility of calcium citrate pentahydrate in purified water at 25°C is 3.4 g / 100 ml. The chemical reaction formula is:

[0032] 2C 6 h 8 o 7 ·H 2 O+3CaCO 3 = Ca 3 (C 6 h 5 o 7 ) 2 ·5H 2 O+3CO 2

[0033]The calcium citrate pentahydrate contains 20.41% calcium; 64.29% citric acid; when the solubility is 3.4 g / 100 ml, the water-soluble calcium that can be absorbed by the human body, animals and plants is as high as 687 mg,...

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PUM

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Abstract

The present invention relates to the field of biochemical industry, food and medicines, and relates to a soluble citrate preparation method which is as follows: using citric acid and metal organic or inorganic salt for direct chemical synthesis for preparation of a water soluble citrate without addition of water or other solvents; for example, evenly mixing 80-100 mesh lanthanum acetate salt with citric acid in the molar ratio of 1:1; grinding for 65 minutes in a reactor at the temperature of 40 DEG C; and cooling to obtain the water soluble citrate; the preparation method has the advantages of simple production process, less production steps, small equipment and plant investment, low production energy consumption, short production period, low pollution, low production cost, water soluble product and wide range of application.

Description

technical field [0001] The invention relates to a preparation method of soluble citrate in the fields of biochemical industry and food medicine. Background technique [0002] Citrate is widely used in food, medicine, daily chemical and other industries, among which calcium citrate, potassium citrate, magnesium citrate, iron citrate, strontium citrate, lanthanum citrate, iron citrate Ammonium salts and zinc citrate salts are used as nutritional supplements for humans, animals and plants and are included in the US Pharmacopoeia. Citrates such as calcium citrate, potassium citrate, magnesium citrate, iron citrate, strontium citrate, lanthanum citrate, iron ammonium citrate and zinc citrate are insoluble in water and are not easily It can be absorbed and utilized by human body, animals and plants, and its use is restricted. [0003] The traditional method of producing citrate is: mix citric acid, metal organic salt or inorganic salt and water in a certain proportion; put them ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C59/265C07C51/41
CPCC07C51/412
Inventor 刘瑞宁
Owner 刘瑞宁
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