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Method for extracting phytosterol from vegetable oil deodorization distillate

A technology for deodorizing distillate and phytosterol, applied in the direction of steroids, organic chemistry, etc., can solve the problems of strong acid, strong alkali, strong corrosion, high equipment material requirements, complicated chemical process, etc., and achieves low cost, high purity High, simple chemical process effect

Inactive Publication Date: 2019-03-05
JIANGXI HENGSHI BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method for extracting phytosterols from it is mainly to use strong acid and strong base as catalysts to convert free fatty acids and neutral oils into fatty acid esters, and then separate phytosterols. The defect is that strong acids and strong bases are corrosive Strong, high requirements on equipment materials, complex post-processing, unfavorable to the environment; on the other hand, this kind of chemical process using strong acid and strong alkali as catalyst is more cumbersome

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for extracting phytosterols from vegetable oil deodorization distillates, comprising the steps of:

[0016] (1) 1000g corn oil deodorization distillate, 300ml methanol and 50g nanometer solid superacid ClO 4 - / Fe 2 o 3 -ZnO was added to the reactor, stirred and reacted at 75°C for 4h; the ClO in the nano-solid superacid 4 - Acid radical content is 8wt%, nano-oxide content is 92wt%, and described nano-oxide is made up of 84wt% nano-iron oxide and 16wt% nano-zinc oxide; The acid strength H of described nano-solid superacid o =﹣13.72; The actual measured phytosterol content in the deodorized distillate of corn oil is 13.6%;

[0017] (2) Step (1) After the reaction finishes, filter and get the filtrate;

[0018] (3) Transfer the filtrate of step (2) to the cold analysis tower, and carry out cooling and crystallization with a gradient of 1°C / h. When the temperature drops to 10°C, keep it warm for 48h;

[0019] (4) press-filtering the mixed solution after ste...

Embodiment 2

[0022] A method for extracting phytosterols from vegetable oil deodorization distillates, comprising the steps of:

[0023] (1) 1000g soybean oil deodorization distillate, 300ml ethanol and 50g nanometer solid superacid ClO 4 - / Fe 2 o 3 -ZnO was added to the reactor, stirred and reacted at 75°C for 4h; the ClO in the nano-solid superacid 4 - Acid radical content is 5wt%, nano-oxide content is 95wt%, and described nano-oxide is made up of 90wt% nano-iron oxide and 10wt% nano-zinc oxide; The acid strength H of described nano-solid superacid o =﹣14.36; The actual measured phytosterol content in soybean oil deodorized distillate is 14.3%;

[0024] (2) Step (1) After the reaction finishes, filter and get the filtrate;

[0025] (3) Transfer the filtrate of step (2) to the cold analysis tower, and carry out cooling and crystallization with a gradient of 1°C / h. When the temperature drops to 10°C, keep it warm for 48h;

[0026] (4) press-filtering the mixed solution after step ...

Embodiment 3

[0029] A method for extracting phytosterols from vegetable oil deodorization distillates, comprising the steps of:

[0030] (1) 1000g rapeseed oil deodorization distillate, 300ml n-propanol and 50g nanometer solid superacid ClO 4 - / Fe 2 o 3 -ZnO was added to the reactor, stirred and reacted at 75°C for 4h; the ClO in the nano-solid superacid 4 - Acid radical content is 15wt%, nano-oxide content is 85wt%, and described nano-oxide is made up of 75wt% nano-iron oxide and 25wt% nano-zinc oxide; The acid strength H of described nano-solid superacid o =﹣13.94; The actually measured phytosterol content in the deodorized distillate of rapeseed oil is 12.9%;

[0031] (2) Step (1) After the reaction finishes, filter and get the filtrate;

[0032] (3) Transfer the filtrate of step (2) to the cold analysis tower, and carry out cooling and crystallization with a gradient of 1°C / h. When the temperature drops to 10°C, keep it warm for 48h;

[0033] (4) press-filtering the mixed solut...

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Abstract

A method for extracting phytosterol from a vegetable oil deodorization distillate is provided. The method includes (1) adding a vegetable oil deodorization distillate, an alcohol and a solid super acid to a reaction vessel in a mass ratio of 100:30:5, and stirring and reacting the materials at 75 DGE C for 4 h; (2) after the reaction in the step (1) is finished, performing filtration to obtain a filtrate; (3) transferring the filtrate of the step (2) to a cooling precipitation column, cooling and crystallizing the filtrate with a gradient of 1 DEG C / h, and maintaining the temperature for 48 hwhen the temperature is 10 DEG C; (4) subjecting the liquid mixture after cold precipitation in the step (3) to pressure filtration to obtain a phytosterol crude product; and (5) dissolving the phytosterol crude product of the step (4) into an organic solvent the weight of which is five times of the weight of the crude product, heating the mixture to fully dissolve the crude product, then coolingand crystallizing the mixture with a gradient of 1 DEG C / h, maintaining the temperature for 48 h when the temperature is 10 DEG C, and then performing pressure filtration and drying to obtain phytosterol. The method has advantages of simple chemical process, high product yield, high purity, simple operation, no pollution and low cost.

Description

technical field [0001] The invention belongs to the technical field of biochemical industry, and in particular relates to a method for extracting phytosterols from vegetable oil deodorization distillates. Background technique [0002] The main components of vegetable oil deodorization distillate are free fatty acids, neutral oils, natural vitamin E and phytosterols. At present, the method for extracting phytosterols from it is mainly to use strong acid and strong base as catalysts to convert free fatty acids and neutral oils into fatty acid esters, and then separate phytosterols. The defect is that strong acids and strong bases are corrosive Strong, high requirements on equipment materials, complex post-processing, unfavorable to the environment; on the other hand, this chemical process using strong acid and strong alkali as a catalyst is relatively cumbersome. Contents of the invention [0003] In order to solve the problems in the prior art, the invention provides a met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07J9/00
CPCC07J9/00
Inventor 刘俊万永军耿志国
Owner JIANGXI HENGSHI BIOTECH CO LTD