Preparation method for plant sterol ester

A technology of phytosterol esters and phytosterols, which is applied in the field of preparation of phytosterol esters, can solve the problems of many side reactions and cation exchange resins not resistant to high temperatures, and achieve the effects of overcoming high temperature resistance, severe equipment corrosion, and high conversion rate

Active Publication Date: 2015-03-11
江苏膜芮环保科技有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

The method of the present invention overcomes the shortcomings of the existing liquid acid and solid acid catalytic technology, and also overcomes the shortcomings of the existing cation exchange resins that are not resistant to high temperatures, and the microporous adsorption of reactants in the cation exchange resins causes many side reactions, etc.

Method used

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  • Preparation method for plant sterol ester
  • Preparation method for plant sterol ester
  • Preparation method for plant sterol ester

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0045] Preparation Example 1: Preparation of High Temperature Resistant Polymer Catalytic Membrane

[0046] First, carbon fiber non-woven fabrics (purchased from Beijing Jucheng Zhonggu Technology Co., Ltd.) were soaked in 5 g / L NaOH ethanol solution at 40°C for 2 hours, then the samples were taken out and washed with ethanol and placed in a refrigerator at a temperature of 80°C. Dry in an electric heating constant temperature air blast drying oven, and cut the pretreated nonwoven fabric into small pieces with an area of ​​10cm×10cm for later use.

[0047] Dissolve 150 grams of sulfonated polyetheretherketone powder (purchased from Haipu Poly) with a sulfonation degree of 30% in 850 grams of N,N-dimethylpyrrolidone solvent to form a cast film with a mass concentration of 15%. liquid; then immerse the pretreated non-woven fabric in the casting solution, so that the non-woven fabric and the casting solution are fully infiltrated, take it out after 30 minutes and put it into the ...

preparation Embodiment 2

[0049] Preparation Example 2: Preparation of High Temperature Resistant Polymer Catalytic Membrane

[0050] Prepare the high-temperature-resistant polymer catalytic membrane with the same method as Preparation Example 1, the difference is that the non-woven fabric used is a basalt fiber non-woven fabric (purchased from Yancheng Shibang Cloth Industry Co., Ltd.), and the non-woven fabric was previously Soak with ethanol solution at 40°C for 3 hours.

[0051] The ion exchange capacity of the obtained membrane was measured by the method of acid-base titration to be 1.5 mmol / g membrane.

preparation Embodiment 3

[0052] Preparation Example 3: Preparation of High Temperature Resistant Polymer Catalytic Membrane

[0053] A high temperature resistant polymer catalytic membrane was prepared in the same manner as in Preparation Example 1, except that no support layer was used. The high temperature resistant polymer catalyst material used is sulfonated polyarylether sulfone ketone (provided by Dalian University of Technology), and the sulfonation degree is 90%. Pour the prepared casting solution directly on the flat glass, and cast and scrape the film. After about 1 minute, put the glass plate with the casting solution in the ethanol coagulation bath for 30 minutes, so as to solidify and form, and obtain a porous composite membrane.

[0054] The ion exchange capacity of the resulting membrane was measured by acid-base titration to be 5 mmol / g membrane.

[0055] Synthesis Example 1: Synthesis of Phytosterol Esters

[0056] Cut the catalytic membrane of sulfonated polyetheretherketone (purch...

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Abstract

The invention relates to a preparation method for plant sterol ester. The method comprises the following steps: 1, stirring phytosterol and fatty acid under a vacuum condition in the presence of a high-temperature resistant polymer catalytic membrane, and heating the phytosterol and the fatty acid to be molten; 2, heating the phytosterol and the fatty acid to specified reaction temperature at constant speed, and performing thermostatic reaction; 3, separating a product mixture from the catalytic membrane after the reaction is ended; 4, adding alcohol for washing, performing stirring and standing demixing, and repeatedly washing a lower oil layer with alcohol; 5, performing vacuum rotary evaporation on the lower oil layer to obtain plant sterol ester after centrifugal demixing, wherein the high-temperature resistant polymer catalytic membrane is a polymer material of which the main chain is one of polyetheretherketone, poly-p-phenylene terephthamide, polyimide and polyaryletherketone and the side-chain radical is a catalytic active radical. According to the preparation method, the problems of corrosion to equipment, difficulty in product separation, environmental pollution, solid catalyst residues, high-temperature irresistance of cation exchange resin and more side reaction caused by reactant adsorption of resin micropores of homogeneous catalysis are solved.

Description

technical field [0001] The invention relates to a method for preparing phytosterol esters, in particular to a method for preparing phytosterol esters by using a functional film containing catalytic functional groups as a solid catalyst and using phytosterols and fatty acids as raw materials. Background technique [0002] Cardiovascular and cerebrovascular diseases claim the lives of 12 million people around the world every year, and are the number one killer threatening human health. In my country, there are more than 270 million patients with cardiovascular and cerebrovascular diseases, and nearly 3 million people die of cardiovascular and cerebrovascular diseases every year, accounting for 51% of the annual death toll due to diseases in my country, and the onset tends to be younger. Seeking green and safe ways to prevent cardiovascular and cerebrovascular diseases is a common problem faced by all mankind. [0003] In 2000, phytosterol was recognized by the U.S. Food and D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07J9/00B01J31/06
CPCB01J31/10B01J2231/49C07J9/00
Inventor 何本桥李建新严峰邓涛黄岩
Owner 江苏膜芮环保科技有限公司
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