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Method for extracting phytosterol acetate from plant oil asphalt

A technology of phytosterol acetate and vegetable oil pitch, applied in the directions of steroids, organic chemistry, etc., can solve problems such as low product cost, and achieve the effects of low product cost, simple and easy technological process, and obvious economic benefits

Inactive Publication Date: 2007-08-29
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the deficiencies and problems existing in the above-mentioned prior art, and provides a method for extracting phytosterol acetate from vegetable oil asphalt. lower

Method used

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  • Method for extracting phytosterol acetate from plant oil asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 3kg of vegetable oil asphalt, 1.02kg of sodium hydroxide and 3kg of water into a reaction kettle with a stirrer, a reflux condenser and a heating mantle, heat to 95°C under stirring and reflux, then saponify by heating for 30 minutes, add 9kg of hot water at 95° C. was continued to heat and reflux the reaction mixture for 1.5 hours to stop the reaction, and the reactant was cooled to room temperature, and the reactant was separated into layers. The saponification solution of the lower layer is discarded, and the unsaponifiable matter of the upper layer is collected, which contains most of the sterol acetate that has not been saponified by sodium hydroxide, so it will be separated and collected.

[0029] Pour the unsaponifiable matter in the upper layer and 7.5L of isopropanol into the reaction kettle, extract it in a conventional extraction system, add 600g of potassium hydroxide at 80°C, continue the reflux reaction for 3.5 hours, and add it when it cools to a tempe...

Embodiment 2

[0031] The amount of hot water added during saponification was 6.0kg, and all the other extraction steps were the same as in Example 1. As a result, 165.16g of crude sterols were obtained, with a yield of 5.5%, and a recovery rate of 34.3% of the theoretical content of asphaltic sterol esters.

Embodiment 3

[0033]Heat 5.3kg of vegetable oil asphalt, 1.9kg of sodium hydroxide and 5.3kg of water in a device equipped with reflux, stirring and heating to 100°C, and maintain the saponification reaction for 1.5 hours; then add 16.0L of hot water at 90°C, and continue the reaction for 1 hour After 30 hours, let it cool down to room temperature. After 2 hours, it was found to be clearly separated. Discard the lower saponified layer and collect the upper unsaponifiable layer. Add 13.0L of isopropanol and 950gKOH, heat to 80°C, and reflux for 2 hours. , to stop the reaction, let the reaction solution cool to 58°C, add 13.0kg of 90°C hot water and 100g of activated carbon, continue the reaction and reflux, and maintain the reaction at 80°C for ten minutes, stop the reaction, filter with a preheated filter, and use the filter cake Wash with the mixed solution of 300ml isopropanol and 900ml water, collect filtrate and slowly cool to room temperature, separate out sterol acetate and need 25 hou...

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Abstract

The present invention discloses process of extracting plant sterol acetate from vegetable oil asphalt, and the process is simple, cheap in material, high in product yield and low in product cost. The process includes the main steps of saponification and alcoholysis. In the saponification, neutral oil is converted into fatty acid salt to obtain great amount of matter not to be saponified and containing sterol acetate. The sterol acetate inside the matter not to be saponified is then hydrolyzed with organic solvent, crystallized, washed and dried to obtain sterol acetate.

Description

technical field [0001] The invention relates to a method for extracting sterol acetate, more particularly to a method for extracting phytosterol acetate from vegetable oil pitch. Background technique [0002] Phytosterols, stanols and their esters can effectively reduce plasma cholesterol concentration by inhibiting the absorption of cholesterol in the small intestine. Many margarines fortified with phytosterols or phytostanols first appeared on the European and Australian markets as a health food for lowering blood cholesterol. Approved by the US FDA in 1999, phytosterol acetate has been used in margarine foods. U.S. Patent 6277431 has reported that the mixture of phytosterol, sterol acetate and tocopherol is applied in edible oil to invent a kind of anti-cholesterol edible oil. Excretion of cholesterol in the human body, reducing the accumulation of peroxides in the blood, and increasing the vitamin E content in the blood. [0003] At present, phytosterol esters are gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07J9/00
Inventor 姚成叶爱英
Owner NANJING TECH UNIV