The preparation method of sucrose ester

A technology of sucrose ester and sucrose, applied in the field of non-ionic surfactants, can solve the problems of low thermal stability, product coking and agglomeration, affecting product quality, etc., and achieves high monoester content, good product quality, and good emulsifying performance. Effect

Active Publication Date: 2016-05-04
ADANA FOOD TECH LIUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the synthesis system of sucrose esters, if there is water, sucrose is easily decomposed into glucose and fructose. The thermal stability of glucose and fructose is lower than that of sucrose, and it is easy to undergo caramelization reaction at a lower temperature, resulting in coking of the product. , affecting product quality

Method used

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  • The preparation method of sucrose ester

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Effect test

Embodiment 1

[0018] Calcium oxide and sodium hydroxide were burned at 700°C for 2 hours, and cooled for later use; methyl stearate was heated and melted, and the calcium oxide burned in step (1) was added to stir, and filtered after stirring; step (2 ) filtered methyl stearate, sucrose and step (1) burnt sodium hydroxide are placed in a reaction vessel, fully mixed, stirred and reacted in an oil bath for 1 hour, the temperature during the reaction The temperature is 120°C, the stirring speed is 800rpmm, and the pressure is 0.005MPa; the product obtained in step (3) is washed with butanone several times, and after vacuum drying, the present sucrose ester is obtained with a yield of 74.1%.

[0019] The consumption of described sodium hydroxide is 4% of described methyl stearate quality; The mol ratio of described methyl stearate and sucrose is 3:1; The consumption of described calcium oxide is described methyl stearate 10% of ester mass.

Embodiment 2

[0021] Calcium oxide and sodium hydroxide were burned at 800°C for 3 hours, cooled for later use; methyl stearate was heated and melted, and the calcium oxide burned in step (1) was added to stir, and filtered after stirring; step (2 ) the filtered methyl stearate, sucrose and step (1) burning sodium hydroxide are placed in a reaction vessel, fully mixed, stirred and reacted in an oil bath for 2 hours, the temperature during the reaction The temperature is 130°C, the stirring speed is 900rpmm, and the pressure is 0.010MPa; the product obtained in step (3) is washed with butanone several times, and after vacuum drying, the present sucrose ester is obtained with a yield of 75.4%.

[0022] The consumption of described sodium hydroxide is 6% of described methyl stearate quality; The mol ratio of described methyl stearate and sucrose is 3:1; The consumption of described calcium oxide is described methyl stearate 12% of ester mass.

Embodiment 3

[0024] Calcium oxide and sodium hydroxide were burned at 900°C for 4 hours, cooled for later use; methyl stearate was heated and melted, and the calcium oxide burned in step (1) was added to stir, and filtered after stirring; step (2 ) the filtered methyl stearate, sucrose and step (1) burnt sodium hydroxide are placed in a reaction vessel, fully mixed, and stirred and reacted in an oil bath for 3 hours. During the reaction, the temperature The temperature is 150°C, the stirring speed is 1000rpmm, and the pressure is 0.020MPa; the product obtained in step (3) is washed with butanone several times, and after vacuum drying, the present sucrose ester is obtained with a yield of 76.9%.

[0025] The consumption of described sodium hydroxide is 8% of described methyl stearate quality; The mol ratio of described methyl stearate and sucrose is 3:1; The consumption of described calcium oxide is described methyl stearate 14% of ester mass.

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Abstract

The invention discloses a preparation method of sucrose ester. The preparation method comprises following steps: (1) respectively burning the alkali earth metal oxide and the catalyst, and then cooling; (2) heating fatty acid methyl ester to melt, then adding the burned alkali earth metal oxide, stirring and filtering; (3) putting the fatty acid methyl ester filtered in the step (2), sucrose and the burned catalyst in a reaction container, fully mixing, stirring to have reactions in an oil bath; (4) washing the product generated in the step (3) with a solvent for several times, and vacuum drying to obtain the sucrose ester. The preparation method of sucrose ester has the advantages of simpleness and practicality, uniform reactions and high conversion rate. The prepared sucrose ester product has the advantages of good color and luster, high monoester content, good emulsifying ability and suitability for industrial production.

Description

technical field [0001] The invention relates to the technical field of nonionic surfactants, in particular to a method for preparing sucrose esters. Background technique [0002] Sucrose fatty acid ester is referred to as sucrose ester (SE), which is a non-ionic green surfactant with the hydroxyl part of sucrose as the hydrophilic group and the carbon chain part of fatty acid as the hydrophobic group. As a sucrose fatty acid ester produced from natural renewable resources, it is widely used in food, medicine, cosmetics and other industries due to its safety, non-toxic, non-irritating, non-polluting, and biodegradable characteristics. [0003] The earliest synthesis of sucrose esters can be traced back to the 19th century. Initially, sucrose was directly esterified with fatty acid esters in the presence of toxic solvents. Since the esterification reaction is a reversible reaction, the reaction process is generally slow and the side reactions are complicated. In order to st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H13/06C07H1/00
Inventor 金琼常志东吴国勇
Owner ADANA FOOD TECH LIUZHOU
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