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Method for synthesizing and purifying high-purity fatty acyl monoglyceride

A fatty acyl monoglyceride and fatty acyl monoglyceride technology, which is applied in the field of food emulsifier preparation, can solve the problems of excessive glycerol and glyceride, which cannot be layered, long reaction time, and saponification side reactions, and saves equipment investment and reaction. The effect of fast speed and high production efficiency

Active Publication Date: 2013-01-09
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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  • Method for synthesizing and purifying high-purity fatty acyl monoglyceride
  • Method for synthesizing and purifying high-purity fatty acyl monoglyceride
  • Method for synthesizing and purifying high-purity fatty acyl monoglyceride

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Embodiment 1

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

[0031] (1) Synthesis of fatty acyl monoglycerides: Take 100.0 g of soybean oil and add it to the reactor, and add K 2 CO 3 / HT solid base catalyst (for the preparation method refer to Cai Jing, "Research on the Preparation of Biodiesel from Rapeseed Oil Catalyzed by Solid Base Catalyst", Hefei University of Technology Master's Thesis (Chapter 3), 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, and after the transesterification reaction for 2 hours. After the reaction liquid is filtered by suction, it is allowed to stand and separate for 45 minutes. The upper layer is the glyceride layer and the lower layer is the glycerin layer; the glycerin layer and the glyceride layer are successively released. The glyceride layer was analyzed by...

Embodiment 2

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

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

Embodiment 3

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

[0042] (1) Synthesis of fatty acyl monoglycerides: Take 100.0g of hydrogenated soybean oil and add it to the reactor, add K 2 CO 3 / HT solid base catalyst (for the preparation method refer to Cai Jing, "Research on the Preparation of Biodiesel from Rapeseed Oil Catalyzed by Solid Base Catalyst", Master's Thesis of Hefei University of Technology (Chapter 3), 2009) 1.0g, 25.0g glycerin, reactor pumping Vacuum until the pressure is 10000 Pa, while stirring continuously, start timing when the temperature reaches 230°C, and after the transesterification reaction for 1 hour. After the reaction liquid is filtered by suction, it is allowed to stand and separate for 30 minutes. The upper layer is the glyceride layer and the lower layer is the glyceride layer; the glycerin layer and the glyceride layer are successively released. The glyceride lay...

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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 food emulsifier preparation, and specifically 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. At present, the consumption of food emulsifiers worldwide exceeds 400,000 tons, while the consumption of food emulsifiers in my country is about 100,000 tons. Fatty acyl monoglycerides (monoglycerides for short) 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 40-60% of food emulsifiers. The molecularly distilled monoglyceride product with the highest market share is stearoyl monoglyceride. [0003] The existing industrialized production of high-purity molecular distillation monoglyceride processes such as figure 1 Shown (Liang Zhenming. Molecular distillation monoglyceride production proc...

Claims

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Application Information

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Patent Type & Authority Applications(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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