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A method for synthesizing high-purity sucrose monoester

A sucrose monoester, high-purity technology, applied in the field of sucrose ester manufacturing, can solve the problems of low monoester content, difficult to remove, dark color, etc., to achieve the effect of preventing caramelization reaction

Active Publication Date: 2022-06-28
武汉臻治生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the synthesis of sucrose ester has solvent method, solvent-free method, microemulsion method and phase transfer catalysis method, etc., but the reaction cost of solvent method is expensive, and the residual solvent is toxic and difficult to remove, and the product is difficult to reach medical consumption. According to the standards, the sucrose esters produced by the solvent-free method generally have low yield, low monoester content, and darker color

Method used

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  • A method for synthesizing high-purity sucrose monoester
  • A method for synthesizing high-purity sucrose monoester
  • A method for synthesizing high-purity sucrose monoester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for synthesizing high-purity sucrose monoester is carried out according to the following steps:

[0031] Step 1: Place sucrose, higher fatty acid ester, higher fatty acid salt, and catalyst in a high-energy ball mill for dry grinding, the ball milling speed is 400 r / min, the ball milling time is 5 hours, the protective atmosphere is nitrogen, and the ball milling is uniformly mixed to obtain a mixture, Wherein, the higher fatty acid ester is methyl stearate, the higher fatty acid salt is potassium stearate, the molar ratio of sucrose and higher fatty acid ester is 1:1, and the quality of higher fatty acid salt is sucrose and higher fatty acid ester 10% of the total mass, and the rest are catalysts. The catalyst is mixed with potassium carbonate and potassium hydroxide in a molar ratio of 1:2, and the molar ratio of potassium ions to sucrose in the catalyst is 2:5;

[0032] Step 2: Add the ball-milled mixture into a three-necked bottle, and preheat it in a vacuu...

Embodiment 2

[0039] The difference between this embodiment and the above-mentioned Embodiment 1 is that:

[0040] Step 3: The preheated mixture is placed in an induction furnace for heating and stirring, the protective atmosphere is nitrogen, the heating temperature is 110 ° C, and the stirring is performed for 5 hours, the stirring speed is 400 r / min, and the reaction pressure is 1.5 kPa to obtain a crude product;

[0041] Other conditions remain unchanged.

Embodiment 3

[0043] The difference between this embodiment and the above-mentioned Embodiment 1 is that:

[0044] Step 3: The preheated mixture is placed in an induction furnace for heating and stirring, the protective atmosphere is argon gas, the heating temperature is 100 ° C, and stirring is performed for 3 hours, the stirring speed is 400 r / min, and the reaction pressure is 1.5 kPa to obtain a crude product ;

[0045] Other conditions remain unchanged.

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Abstract

The invention relates to a method for synthesizing high-purity sucrose monoester. Firstly, sucrose, high-grade fatty acid ester, high-grade fatty acid salt, and catalyst are ball-milled to obtain a mixture. After the ball-milled mixture is preheated in vacuum, it is placed in an induction furnace. Add warm water to the crude product while it is hot and stir, neutralize with acetic acid, add calcium chloride solution, filter the precipitate to obtain a mixed solution; ultrasonically oscillate the mixed solution, let it stand for stratification, and separate the liquid to obtain an aqueous solution and organic liquid; put the organic liquid in an ice water bath to precipitate white crystals, filter, and dry under reduced pressure to obtain product A; put the aqueous solution in an ice water bath, add sodium chloride solution for recrystallization, remove the lower aqueous phase, and dry under reduced pressure Afterwards, product B is obtained. Before synthesis, ball mill the mixture to obtain a uniform mixture. The mixture after ball milling is preheated in a vacuum drying oven at 50-70°C, which can make each substance melt at a lower temperature and prevent sucrose from occurring at high temperature. caramelization reaction.

Description

technical field [0001] The invention relates to the field of sucrose ester manufacture, in particular to a method for synthesizing high-purity sucrose monoester. Background technique [0002] Sucrose ester is the abbreviation of sucrose fatty acid ester, which is usually obtained by esterification or transesterification reaction of sucrose and long-chain fatty acid or fatty acid ester. It has both hydrophilic sugar groups and lipophilic fatty acid side chains. Ionic surfactants. Studies have shown that sucrose esters have good emulsifying ability, are non-toxic, and are easily biodegraded, so they are widely used in medicine, cosmetics and food industries. Due to the presence of multiple hydroxyl reactive sites on the sucrose structure, the reaction product is a mixture of monoesters, diesters and polyesters. Among them, the sucrose monoester has better water solubility and certain antibacterial activity, so that the sucrose monoester has high economic value. [0003] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H1/00C07H13/06
CPCC07H1/00C07H13/06
Inventor 蓝平马丁·格哈特·班威尔孙强滕英来马亚茹解梦飞
Owner 武汉臻治生物科技有限公司
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