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Preparing method of unsaturated fatty acid monoglyceride

A technology for fatty acid esters and fatty acid glycerides, which is applied in the field of preparation of unsaturated monoglyceride fatty acid esters, can solve problems such as single product, and achieve the effects of simple method, reduced production cost and high content

Inactive Publication Date: 2018-05-11
广州美晨科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there is no gap between my country's molecular distillation monoglyceride production technology and foreign countries, the products are relatively single, almost all are saturated monoglyceride stearate

Method used

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  • Preparing method of unsaturated fatty acid monoglyceride
  • Preparing method of unsaturated fatty acid monoglyceride

Examples

Experimental program
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Effect test

Embodiment 1

[0018] A preparation method of unsaturated monoglyceride fatty acid ester, comprising the following steps:

[0019] S1), heating 1000kg of soybean oil to 100-110°C, and filtering for subsequent use after all the oil is melted;

[0020] S2), pumping 500kg of glycerin into the reaction kettle, starting the stirring, heating to 100°C, and then pumping the melted and filtered grease into the reaction kettle;

[0021] S3), after pumping out the grease, add 1.5kg of catalyst solid base, continue to stir and heat up, control the reaction temperature to 170°C, vacuum degree above -0.08MPa, and transesterify for 2 hours;

[0022] S4), after the transesterification reaction is completed, lower the temperature to 100°C-110°C, add activated carbon and diatomaceous earth, stir for 30-60 minutes, and then filter to obtain unsaturated fatty acid glycerides;

[0023] S5), purifying the unsaturated fatty acid glycerides prepared in step S4) by molecular distillation to obtain a high content o...

Embodiment 2

[0025] A preparation method of unsaturated monoglyceride fatty acid ester, comprising the following steps:

[0026] S1), 1000kg palm oil is heated to 100-110 ℃, after oil and fat all melts, filter standby;

[0027] S2), pumping 300kg of glycerin into the reaction kettle, starting the stirring, heating to 100°C, and then pumping the melted and filtered grease into the reaction kettle;

[0028] S3), after the grease is pumped out, add 2kg of catalyst solid acid, continue to stir and heat up, control the reaction temperature to 180°C, vacuum degree above -0.08MPa, and transesterify for 2.5 hours;

[0029] S4), after the transesterification reaction is completed, lower the temperature to 100°C-110°C, add activated carbon and diatomaceous earth, stir for 30-60 minutes, and then filter to obtain unsaturated fatty acid glycerides;

[0030] S5), purifying the unsaturated fatty acid glycerides prepared in step S4) by molecular distillation to obtain a high content of unsaturated monog...

Embodiment 3

[0032] A preparation method of unsaturated monoglyceride fatty acid ester, comprising the following steps:

[0033] S1), 1000kg coconut oil is heated to 100-110 ℃, after oil and fat all melts, filter standby;

[0034] S2), pumping 250kg of glycerin into the reaction kettle, starting the stirring, heating to 100°C, and then pumping the melted and filtered grease into the reaction kettle;

[0035] S3), after pumping out the grease, add 3.5kg of catalyst sodium hydroxide, continue to stir and heat up, control the reaction temperature to be 190°C, vacuum degree is above -0.08MPa, and transesterify for 3 hours;

[0036] S4), after the transesterification reaction is completed, lower the temperature to 100°C-110°C, add activated carbon and diatomaceous earth, stir for 30-60 minutes, and then filter to obtain unsaturated fatty acid glycerides;

[0037] S5), purifying the unsaturated fatty acid glycerides prepared in step S4) by molecular distillation to obtain a high content of unsa...

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Abstract

The invention relates to a preparing method of unsaturated fatty acid monoglyceride. The method specifically includes the steps of heating, melting and filtering fat for use, sucking glycerinum into areaction still, starting stirring, conducting heat till the temperature reaches 100 DEG C, sucking the melted and filtered fat into the reaction still, adding a catalyst for ester exchange for 2-3 hours, adding activated carbon and kieselguhr to obtain unsaturated fatty acid monoglyceride, and conducting purifying through molecular distillation to obtain high-content unsaturated fatty acid monoglyceride. The method is simple, conditions are easy to control, energy consumption is low, and the prepared unsaturated fatty acid monoglyceride is high in content, strong in emulsification capacity and suitable for a high fat and liquid material emulsifying system; in the method, by reducing the reaction temperature, the reaction time is shortened, the content of unsaturated fatty acid monoglyceride in a prepared synthesized material is high, production cost is reduced, the problem that fat is decomposed due to high temperature reaction and many impurities are generated is solved, industrial large-scale production can be conducted, and the method is simple in process and low in production cost.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis, in particular to a preparation method of unsaturated monoglyceride fatty acid ester. Background technique [0002] Food emulsifiers are the most widely used food additives in the food industry. At present, the amount of food emulsifiers used in the world exceeds 400,000 tons, and monoglyceride fatty acid esters (abbreviated as monoglycerides) are the most used varieties of food emulsifiers. my country's monoglyceride output has reached 100,000 tons, accounting for about 50% of food emulsifiers, and some monoglycerides are also used in cosmetics, fine chemicals, detergents and plastics. Although there is no gap between my country's molecular distillation monoglyceride production technology and foreign countries, the products are relatively single, almost all of which are saturated monoglyceride stearate. [0003] In recent years, monoglyceride products based on unsaturated monoglycerid...

Claims

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Application Information

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IPC IPC(8): C11C3/06C11C3/10
CPCC11C3/06C11C3/10
Inventor 胡道华郑自健郭俊超张思源
Owner 广州美晨科技实业有限公司