Method for preparing hexadecanoic acid direactive glyceride

The technology of palmitic acid monoglyceride and concentrated sulfuric acid is applied in the preparation field of palmitic acid monoglyceride, which can solve the problems of poor emulsifier effect and low content of palmitic acid monoglyceride, etc., and achieve the effect of strong emulsifying ability and high content

Inactive Publication Date: 2013-06-12
南通欧通置业有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

But because it is a mixture of palmitic acid monoglyceride, dipalmitin glyceride and palmitic acid triglyceride, its content of palmitic acid monoglyceride is low, and the effect of emulsifier is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Preparation of solid superacid:

[0015] Take a certain amount of TiCl 4 The solution was quickly stirred and hydrolyzed with 12% dilute ammonia water until the solution was weakly alkaline, and the precipitation was completed. After standing for 24 hours, it was filtered, washed with deionized water until it was free of chloride ions, and dried in an oven at 135°C. The dried TiO 2 Grind it into a 100-mesh fine powder, soak it in concentrated sulfuric acid for 10 hours, filter it, and dry it at 135°C. It was then activated in a muffle furnace at 550 °C for 3 hours. Obtain solid superacid catalyst;

[0016] Preparation of glyceryl monopalmitate:

[0017] Add 200g of palmitic acid, 200g of glycerin, and 10g of solid superacid in a 1000ml flask, and carry out esterification reaction at 100°C to obtain a mixed ester of glycerol monopalmitate with a content of 70%. Remove, then use ethanol as a solvent, the first fractionation temperature is 45°C, the second fractionati...

Embodiment 2

[0019] Preparation of solid superacid:

[0020] Take a certain amount of TiCl 4 The solution was rapidly stirred and hydrolyzed with 12% dilute ammonia water until the solution was weakly alkaline, and the precipitation was completed. After standing for 24 hours, it was filtered, and the precipitate was washed with deionized water until it was free of chloride ions, and dried in an oven at 120°C. The dried TiO 2 Grind into 80-mesh fine powder, soak in concentrated sulfuric acid for 12 hours, filter, and dry at 120°C. It was then activated in a muffle furnace at 500 °C for 4 hours. A solid superacid catalyst is obtained.

[0021] Preparation of glyceryl monopalmitate:

[0022] Add 200g of palmitic acid, 160g of glycerin, and 14g of solid superacid in a 1000ml flask, and carry out esterification reaction at 140°C to obtain a mixed ester of glyceryl monopalmitate with a content of 80%. Remove, then use ethanol as a solvent, the first fractionation temperature is 50°C, the se...

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PUM

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Abstract

The invention provides a method for preparing hexadecanoic acid direactive glyceride, which comprises the following steps of: taking a certain amount of TiCl14 solution; fully stirring and hydrolyzing the TiCl14 solution by 12 percent dilute ammonia water until the solution becomes alkalescent; finishing deposition; standing the solution for 24h, and then filtering the solution; washing deposits by de-ionized water until no chloride ions exist; drying the washed deposits in a baking oven; grinding the dried TiO2 into fine powder; soaking the fine powder in concentrated sulfuric acid and filtering the solution; drying the soaked and filtered fine powder in the baking oven by heating; extracting the dried fine powder and activating the fine powder in a muffle furnace at a certain temperature to obtain solid super acid; undergoing an esterification reaction at a certain temperature by using the hexadecanoic acid and glycerin as raw materials and the solid super acid as a catalyst to obtain mixed ester of the hexadecanoic acid glyceride; thermally filtering the mixed ester after the reaction ends to remove the catalyst; and using ethyl alcohol as a solvent for extracting for two timesso as to obtain the hexadecanoic acid direactive glyceride. The hexadecanoic acid direactive glyceride prepared by the method has high content and strong emulsifying capacity.

Description

technical field [0001] The invention relates to a preparation method of monoglyceride palmitate. Background technique [0002] Industrial palmitic acid monoglyceride is generally obtained by esterification of palmitic acid and glycerin under the action of NaOH as a catalyst. Monoglyceride palmitate is directly used in food industry, daily chemical industry and pharmaceutical industry. But because it is a mixture of monoglyceride palmitate, glyceryl dipalmitate and triglyceride palmitate, the content of monoglyceride palmitate is low, and the effect of emulsifier is poor. Contents of the invention [0003] The purpose of the present invention is to provide a kind of preparation method of high-content monoglyceride palmitate. [0004] To achieve the above object, the technical solution of the present invention is realized in the following ways: [0005] The preparation method of monoglyceride palmitate comprises the steps: [0006] Preparation of solid superacid: [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C69/30C07C67/08
Inventor 李松伦
Owner 南通欧通置业有限公司
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