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A kind of synthesis and purification method of high-purity fatty acyl monoglyceride

A fatty acyl monoglycerol and purification method technology, which is applied in the field of food emulsifier preparation, can solve the problems of saponification side reaction, long reaction time, excessive glycerin and glyceride cannot be separated, and achieve fast reaction speed, high production efficiency, The effect of saving equipment investment

Active Publication Date: 2014-10-29
暨科优脂(佛山)科技研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main shortcoming of the technology of existing molecular distillation monoglyceride is: because the basic catalyst adopted not only catalyzes glycerin and grease transesterification, also can have saponification side reaction simultaneously; Glycerides cannot be separated, and it is necessary to neutralize the alkaline catalyst and soap with phosphoric acid to generate phosphate and a small amount of fatty acids, and then the glycerides and excess glycerin are separated by standing
The content of monoglyceride obtained by this method is relatively high in one reaction, but the raw material must be a mixture of oil and fatty acid. Vacuum pumped away in time, and glycerin can reflux, the reaction time is longer

Method used

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  • A kind of synthesis and purification method of high-purity fatty acyl monoglyceride
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  • A kind of synthesis and purification method of high-purity fatty acyl monoglyceride

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Embodiment 1

[0030] The synthesis and purification process route diagram of the high-purity fatty acyl monoglyceride of the present embodiment is as follows figure 2 Shown:

[0031] (1) Synthesis of fatty acyl monoglycerides: Take 100.0 g of soybean oil into the reaction kettle, add K 2 CO 3 / HT solid base catalyst (refer to Cai Jing for the preparation method, "Research on Preparation of Biodiesel from Rapeseed Oil Catalyzed by Solid Base Catalyst", Master Thesis of Hefei University of Technology (Chapter Three), 2009) 0.5g, glycerin 40.0g Reactor pumping Vacuum to a pressure of 2000 Pa, while stirring continuously, start timing when the temperature reaches 220°C, after 2 hours of transesterification reaction. After the reaction solution was suction filtered, it was allowed to stand for 45 minutes to separate into layers. The upper layer was the glyceride layer, and the lower layer was the glycerol layer; the glycerol layer and the glyceride layer were sequentially released. The glyce...

Embodiment 2

[0036] The synthesis and purification process route diagram of the high-purity fatty acyl monoglyceride of the present embodiment is as follows figure 2 Shown:

[0037] (1) Synthesis of fatty acyl monoglycerides: Take 100.0 g of hydrogenated palm oil and put it into the reaction kettle, add K 2 CO 3 / HT solid base catalyst (refer to Cai Jing for the preparation method, "Research on Preparation of Biodiesel from Rapeseed Oil Catalyzed by Solid Base Catalyst", Master Thesis of Hefei University of Technology (Chapter Three), 2009) 0.6g, glycerin 60.0g Reactor pumping Vacuum to a pressure of 400 Pa, while stirring continuously, start timing when the temperature reaches 190° C., after transesterification reaction for 5 hours. After the reaction solution was suction filtered, it was allowed to stand for 30 minutes to separate layers, the upper layer was the glyceride layer, and the lower layer was the glycerol layer; the glycerol layer and the glyceride layer were released in seq...

Embodiment 3

[0041] The synthesis and purification process route diagram of the high-purity fatty acyl monoglyceride of the present embodiment is as follows figure 2 Shown:

[0042] (1) Synthesis of fatty acyl monoglycerides: Take 100.0 g of hydrogenated soybean oil and put it into the reaction kettle, add K 2 CO 3 / HT solid base catalyst (refer to Cai Jing for the preparation method, "Research on Preparation of Biodiesel from Rapeseed Oil Catalyzed by Solid Base Catalyst", Master Thesis of Hefei University of Technology (Chapter Three), 2009) 1.0g, glycerin 25.0g Reactor pumping Vacuum to a pressure of 10,000 Pa, while stirring continuously, start timing when the temperature reaches 230°C, and transesterify after 1 hour. After the reaction solution was suction filtered, it was allowed to stand for 30 minutes to separate layers, the upper layer was the glyceride layer, and the lower layer was the glycerol layer; the glycerol layer and the glyceride layer were released in sequence. The ...

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Abstract

The invention discloses a method for synthesizing and purifying high-purity fatty acyl monoglyceride. The method comprises the following steps: mixing fat, glycerol and solid base catalyst, vacuumizing, stirring and heating to obtain a fat mixture; under vacuum conditions, connecting a condensation return pipe to carry out ester exchange reaction; filtering the reaction product, and standing or carrying out centrifugal stratification, wherein the supernatant is a glyceride layer, and the understratum is a glycerol layer; carrying out primary molecular distillation on the glyceride layer to remove free fatty acid and glycerol; and carrying out secondary molecular distillation on the glyceride layer without the free fatty acid and glycerol to obtain a distillate and distillation residues, wherein the distillate is the high-purity fatty acyl monoglyceride, and the distillation residues are diglyceride and triglyceride. The invention shortens the procedure, and saves the equipment investment; compared with the solid acid catalysis technology, the invention uses fat as the raw material, and does not need fatty acid; and the invention does not need to dropwisely add glycerol, control the temperature of cooling water or the like, and thus, has the advantages of simpler reaction operation, higher solid base catalysis reaction speed and higher production efficiency.

Description

technical field [0001] The invention belongs to the field of preparation of food emulsifiers, and in particular relates to a method for synthesizing and purifying high-purity fatty acyl monoglycerides. Background technique [0002] Food emulsifiers are the most widely used surfactants in the food industry. Currently, the amount of food emulsifiers used in the world exceeds 400,000 tons, while the amount of food emulsifiers used in my country is about 100,000 tons. Fatty acyl monoglycerides (referred to as monoglycerides) are the largest category of food emulsifiers. The output of monoglycerides in my country has reached 40,000 to 60,000 tons, accounting for about 40 to 60% of food emulsifiers. The molecularly distilled monoglyceride product with the highest market share is stearyl monoglyceride. [0003] Existing industrialized production process of high-purity molecular distillation monoglyceride such as figure 1 Shown (Liang Zhenming. Molecular Distillation Monoglyceride...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11C3/10
Inventor 汪勇张震李爱军晏日安
Owner 暨科优脂(佛山)科技研发有限公司
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