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Crystallization method for sucralose

A technology for sucralose and crystallization, which is applied in the field of crystallization of large sucralose, can solve the problems of fine sucralose crystals and the like, and achieves the effects of saving processes, having large crystals and reducing costs.

Inactive Publication Date: 2013-03-20
LIYANG WEIXIN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patents CN 101210034A and CN102391319A describe mixed solvent crystallization of sucralose. This method effectively reduces the crystallization time, but there is residual solvent in sucralose, and the filtrate obtained after filtration needs to be treated before it can be recycled. Finally The waste liquid can only be discharged after being treated, and the crystalline particles of the obtained sucralose crystals are relatively fine

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0028] (1) Use 50g of sucralose-6-ethyl ester (content 96.5%) as a raw material, add methanol and sodium methoxide to deacylate to obtain a sucralose solution, concentrate to dryness, add 100ml of water, 0.5g of activated carbon for decolorization, and then concentrate until dry, then add water to the obtained sucralose to prepare a saturated solution of sucralose at 60°C;

[0029] (2) Filtration: Filtrate the saturated solution of sucralose obtained in step (1) to obtain the filtered clear liquid;

[0030] (3) Cool down, stir and crystallize: first use 3 hours to reduce the temperature of the filtered clear liquid to 55°C, then reduce the temperature by 5°C every 2 hours to 18°C, and stop cooling when the temperature drops to 18°C; the temperature is When the temperature is 55~80°C, the stirring speed is 50rpm; when the temperature is 30°C~55°C, the stirring speed is 40rpm; when the temperature is 18°C~30°C, the stirring speed is 36 rpm; when the temperature is 18°C, the stir...

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Abstract

The invention relates to a crystallization method for sucralose, which comprises the following steps of: (1), confecting a sucralose saturated solution under the condition of 60 DEG C to 80 DEG C; (2), filtering the sucralose saturated solution obtained in the step (1), thereby obtaining a filtered clear solution; (3), reducing the temperature of the filtered clear solution to 55 DEG C within 3 hours, then reducing the temperature to 18 DEG C with the cooling rate of 5 DEG C each two hours, and stopping cooling when the temperature is reduced to 18 DEG C; and (4), standing and filtering, thereby obtaining sucralose crystals. The crystallization method provided by the invention is simple in operation, an organic solvent is not required in the crystallization process, the obtained sucralose has no solvent residue, the filtrate obtained in filtering the sucralose crystals can be directly recycled without being treated, and the final waste solution can be exhausted directly, thus the process is reduced and the cost is saved. The sucralose crystals obtained according to the invention has high content, large crystal particle and shining crustal surface, and granulation equipment is not required, thus the crystallization method is beneficial for industrial production.

Description

technical field [0001] The invention relates to a crystallization method of large particle sucralose. Background technique [0002] Sucralose is a kind of chlorinated sucrose, which is a new type of sweetener. Its sweetness is 600 times that of sucrose. It does not participate in human metabolism, has high safety and strong ability to resist acid hydrolysis. These advantages make it the preferred product in the market. US4343934, US5141860, US4977254, US4783526, US4380476, and other patents all describe sucralose water crystallization, but these methods all have the disadvantages of powder crystallization or small particle size, easy agglomeration, irregular particle shape, and high moisture content in the product . Patent US5298611 proposes to use a granulator to produce spherical sucralose crystals. This method can effectively increase the fluidity of sucralose and reduce dust, but the process steps and production costs are increased because the crystallization needs to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H5/02C07H1/06
Inventor 蒋朝明丁红辉刘华
Owner LIYANG WEIXIN CHEM
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