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Purification and separation method of sucrose fatty acid ester

A technology of sucrose fatty acid ester and separation method, which is applied in the direction of chemical instruments and methods, sugar derivatives, sugar derivatives, etc., can solve the problems of difficult organic wastewater treatment, complex process, large amount of organic solvent, etc., and achieve simple It is conducive to industrial production, broad market prospects, and convenient environmental protection.

Pending Publication Date: 2021-11-16
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned method for purifying and separating sucrose fatty acid esters generally has the following problems: the process is complicated, the recovery rate of sucrose fatty acid esters is not high, and the refining cost is high; the amount of organic solvent used is large, which will cause some low-toxicity organic solvents to remain in the sample Among them, the treatment of organic wastewater is difficult, which increases the production cost and increases the pressure on environmental protection

Method used

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  • Purification and separation method of sucrose fatty acid ester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Dissolve and disperse 20.0 g of crude sucrose fatty acid ester in a mixed solution of 60.0 mL of ethyl acetate and 8.6 mL of water, stir and dissolve at 60°C for 30 min to obtain a crude sucrose fatty acid ester solution;

[0024] (2) Add 0.05 g / ml acetic acid solution to the crude sucrose fatty acid ester solution, adjust the pH to 7, stir for 10 min, and remove the insoluble matter by suction filtration;

[0025] (3) Transfer the sucrose fatty acid ester filtrate into a 250 mL beaker, slowly add 60 mL of sodium chloride aqueous solution with a mass fraction of 5%, stir for 15 min, add 1.2 g of barium chloride and let stand for 30 min after stirring, pump Barium salts were removed by filtration and the aqueous layer was drained;

[0026] (4) The filtrate was left to stand at 63°C for 30 min, the organic phase was washed twice with distilled water and then the water layer was discharged. The resulting solution was rotary evaporated to remove the organic solvent, the...

Embodiment 2

[0028] (1) Dissolve and disperse 20.0 g of crude sucrose fatty acid ester in a mixed solution of 100.0 mL of methyl ethyl ketone and 1.0 mL of water, stir and dissolve at 60°C for 30 min to obtain a crude sucrose fatty acid ester solution;

[0029] (2) Add 0.05 g / ml citric acid in one solution to the crude sucrose fatty acid ester solution, adjust the pH to 7, stir for 10 min, and remove the insoluble matter by suction filtration;

[0030] (3) Transfer the sucrose fatty acid ester filtrate into a 250 mL beaker, slowly add 60 mL of sodium chloride aqueous solution with a mass fraction of 5%, stir for 15 min, add 1.0 g of calcium chloride, stir and let stand for 30 min, pump Filter to remove calcium salts and drain the aqueous layer;

[0031] (4) The filtrate was left to stand at 63°C for 30 min, the organic phase was washed twice with distilled water, and then the water layer was discharged. The obtained solution was rotary evaporated to remove the organic solvent, then freeze-...

Embodiment 3

[0033] (1) Dissolve and disperse 20.0 g of crude sucrose fatty acid ester in a mixed solution of 40.0 mL of ethyl acetate and 40.0 mL of water, stir and dissolve at 60°C for 30 min to obtain a crude sucrose fatty acid ester solution;

[0034] (2) Add 0.05 g / mL hydrochloric acid solution to the crude sucrose fatty acid ester solution, adjust the pH to 7, stir for 10 min, and remove the insoluble matter by suction filtration;

[0035] (3) Transfer the sucrose fatty acid ester filtrate into a 250 mL beaker, slowly add 60 mL of sodium chloride aqueous solution with a mass fraction of 5%, stir for 15 min, add 1.5 g of calcium chloride, stir and let stand for 30 min, pump Filter to remove calcium salts and drain the aqueous layer;

[0036] (4) The filtrate was left to stand at 63°C for 30 minutes, the organic phase was washed twice with distilled water and then the water layer was discharged. The obtained solution was rotary evaporated to remove the organic solvent, then freeze-drie...

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Abstract

The invention discloses a purification and separation method of sucrose fatty acid ester, which comprises the following steps: dissolving a sucrose fatty acid ester crude product in a mixed solution of an organic solvent and water, and stirring the mixture at 60 DEG C to obtain a sucrose fatty acid ester crude product solution; adding a weak acid solution, adjusting the pH value to 7, stirring, and carrying out suction filtration to remove insoluble substances; transferring the sucrose fatty acid ester filtrate into a beaker, adding a sodium chloride aqueous solution with the mass fraction of 5%, stirring, adding alkaline earth metal salt, stirring the solution, performing standing treatment, carrying out suction filtration to remove the alkaline earth metal salt, and discharging a water layer; and standing the filtrate at 63 DEG C, washing the organic phase with distilled water twice, discharging the water layer, carrying out rotary evaporation on the obtained solution to remove the organic solvent, freeze-drying, and grinding the solution into powder to obtain the sucrose ester refined product. The method has the advantages that the process is simple and convenient, side reactions are few, the product content and recovery rate are high, sucrose in the sucrose ester crude product can be recycled, the amount of three wastes is small, and treatment is easy.

Description

technical field [0001] The invention relates to a purification and separation method of sucrose fatty acid ester. Background technique [0002] Sucrose fatty acid ester (sucrose fatty acid ester) is an emulsifier with wide range of HLB (hydrophilic-lipophilic balance), good effect, high safety and wide application range. It is usually used in chemical products and daily chemical products. , Food and pharmaceutical production and processing as additives, the World Health Organization (WHO), the United Nations Food Organization (FAO), the European Community, Japan, China and the United States have all approved sucrose esters as food additives (Journal of Surfactants and Detergents, 2019, 22(1):32-37). [0003] At present, the industrial production method of sucrose ester is sucrose ester transesterification method. The synthesis of sucrose ester by transesterification method is divided into solvent method and solvent-free method, but the products produced by these two metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H13/06C07H1/06
CPCC07H13/06C07H1/06
Inventor 谢新玲申蒙蒙秦祖赠
Owner GUANGXI UNIV
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