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A kind of preparation method of d-arabinose

A technology of arabinose and calcium gluconate, applied in the field of preparation of D-arabinose, can solve the problems of poor solubility and low purity, and achieve the effects of low production cost, high product quality, simple and novel process

Inactive Publication Date: 2011-12-28
郸城财鑫糖业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings of D-arabinose products produced in the prior art, such as low purity and poor solubility

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The production technology of a kind of D-arabinose of the present invention comprises the steps:

[0025] (1) Oxidative hydrolysis of calcium gluconate

[0026] Take 100Kg of calcium gluconate as an example, prepare a solution with a mass fraction of 25%, add 2Kg of ferric gluconate, heat and stir until it dissolves completely, then add hydrogen peroxide with a mass fraction of 30% at a constant speed when the temperature drops to 70°C, and add The volume is 100L, and the reaction time is 12 hours.

[0027] (2) Slag removal

[0028] After the oxidative hydrolysis reaction of calcium gluconate is qualified, further increase the temperature and boil to remove the residual hydrogen peroxide, and then use a plate and frame filter to filter and remove the precipitate at a pressure of 0.3MPa. Collect the filtrate 500L with a volume fraction of monosaccharide of 12%.

[0029] (3) Desalination

[0030] Pump the D-arabinose reaction solution after filtering and removing resid...

Embodiment 2

[0042] The production technology of a kind of D-arabinose of the present invention comprises the steps:

[0043] (1) Oxidative hydrolysis of calcium gluconate

[0044] Take 100Kg of calcium gluconate as an example, prepare a solution with a mass fraction of 20%, add 1Kg of ferric gluconate, heat and stir until it dissolves completely, then add hydrogen peroxide with a mass fraction of 30% at a constant speed when the temperature drops to 75°C, and add The volume is 150L, ​​and the reaction time is 8 hours.

[0045] (2) Slag removal

[0046] After the oxidative hydrolysis reaction of calcium gluconate is qualified, further increase the temperature and boil to remove the residual hydrogen peroxide, and then use a plate and frame filter to filter and remove the precipitate.

[0047] (3) Desalination

[0048] Pump the D-arabinose reaction solution after filtering and removing residue into the electrodialysis device for desalination. When the conductivity of the filtrate drops ...

Embodiment 3

[0060] The production technology of a kind of D-arabinose of the present invention comprises the steps:

[0061] (1) Oxidative hydrolysis of calcium gluconate

[0062] Take 100Kg of calcium gluconate as an example, prepare a solution with a mass fraction of 30%, add 3Kg of iron gluconate, heat and stir until it is completely dissolved, and then add hydrogen peroxide at a uniform speed when the temperature is lowered to 90°C. The volume is 200L, and the reaction time is 16 hours.

[0063] (2) Slag removal

[0064] After the oxidative hydrolysis reaction of calcium gluconate is qualified, further increase the temperature and boil to remove the residual hydrogen peroxide, then use a plate and frame filter to filter and remove the precipitate, the pressure is 0.4MPa, collect the filtrate 500L, and the volume mass fraction of monosaccharide is 11.6%.

[0065] (3) Desalination

[0066] Pump the D-arabinose reaction solution after filtering and removing residue into the electrodia...

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Abstract

A preparation method of D-arabinose, which uses calcium gluconate as a raw material to carry out oxidative hydrolysis, and then undergoes processes such as slag removal, desalination, decolorization, ion exchange, concentration, crystallization, separation, and drying. The production process of D-arabinose of the present invention is simple and novel, has low production cost and high product quality, and is more suitable for industrialized production.

Description

technical field [0001] The invention relates to a preparation method of D-arabinose. Background technique [0002] D-arabinose is a white crystal with a melting point of 159-160°C, a relative density of 1.585 (20 / 4°C), and a refractive index of 1.585. It is easily soluble in water and glycerin, slightly soluble in alcohol, and insoluble in ether, methanol and acetone. D-arabinose is a reducing sugar, which is a pentose analogue of D-ribose, a component of mycobacterial cell wall arabinogalactan, and a substrate for the synthesis of D-red ascorbic acid in yeast. Nature Medium D-arabinose is rare and exists only in certain bacterial polysaccharides. [0003] D-arabinose can be used in food, medicine, biochemistry, etc. As a sweetener, its sweetness is only about half that of sucrose, but its solubility is lower than that of sucrose, and it is stable in acid and heat; it can also be used as a pharmaceutical intermediate for Preparation of bacterial culture medium and synthesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H3/02C07H1/00
Inventor 闫锁袁淏李锦王念详陆启明张兵团巴向阳展现明
Owner 郸城财鑫糖业有限责任公司
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