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Preparation technology for extracting phytosterols from rice bran crude oil

A technology of phytosterols and crude rice bran oil, which is applied in the field of extraction of phytosterols, can solve the problems of complex extraction process, low product yield, and large solvent consumption, and achieve high content, high yield, and less product damage Effect

Inactive Publication Date: 2013-01-30
ZHEJIANG DELEKANG FOOD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The conventional phytosterol preparation process has disadvantages such as complex extraction process, long process, large solvent consumption, and low product yield.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 500 grams of soap stock, put it into a beaker, then measure 2500 ml of ether, after stirring fully, add 100 ml of drinking water, separate layers, let off the lower liquid, evaporate the upper layer of liquid to remove ether, and obtain 200 grams of mixed oil. Crystallize at a temperature of 5°C for 8 hours, then filter to obtain 12 grams of solid matter, dissolve the solid matter with 200ml of 95% ethanol, add 2 grams of activated carbon, heat to boiling, reflux for 10 minutes, filter while it is hot, then cool to 25°C, and filter , to obtain 7 grams of white crystal phytosterols.

Embodiment 2

[0021] Take 500 grams of soap stock, put it into a beaker, then measure 3000 ml of ether, after stirring fully, add 120 ml of drinking water, separate layers, let off the lower liquid, evaporate the upper layer of liquid to remove ether, and obtain 210 grams of mixed oil. Crystallize at a temperature of 3°C for 9 hours, then filter to obtain 14 grams of solid matter, dissolve the solid matter with 250ml of 97% ethanol, add 3 grams of activated carbon, heat to boiling, reflux for 10 minutes, filter while it is hot, then cool to 24°C, and filter , Obtain 8 grams of white crystal phytosterols.

Embodiment 3

[0023] Take 1,500 grams of soap stock, put it into a beaker, and measure 8,000 ml of ether. After stirring thoroughly, add 200 ml of drinking water, separate layers, remove the lower liquid, and evaporate the upper layer of liquid to remove ether to obtain 650 grams of mixed oil. Crystallize at a temperature of 7°C for 8 hours, then filter to obtain 45 grams of solid matter, dissolve the solid matter with 1500ml of 96% ethanol, add 15 grams of activated carbon, heat to boiling, reflux for 10 minutes, filter while it is hot, then cool to 25°C, and filter , Obtain 28 grams of white crystal phytosterols.

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Abstract

The invention provides a nigre resource obtained by the alkali refining of rice bran crude oil. The preparation technology comprises the following steps of: by taking diethyl ether as an extract solvent, washing nigre by diethyl ether of which the weight is 3-10 times as heavy as the weight of the nigre, separating fatty acid from phytosterol-containing rice bran oil, freezing the rice bran oil, crystallizing, separating out phytosterol crude product and rice bran oil, dissolving the phytosterol curde product by 94%-97% of ethanol, and decoloring by adding activated carbon to obtain phytosterol finished product finally. The phytosterol extracted from the rice bran crude oil is all natural, free from toxicity and side effects, less in damage to phytosterol products, good in beta-sitosterol retaining property, high in content which can be more than 40%, low in solvent loss, higher in yield, better in safety, and is more suitable for the addition agent and the like for pharmacy (antilipemic agent), food and cosmetics.

Description

technical field [0001] The invention relates to a preparation process for extracting phytosterols from rice bran crude oil Background technique [0002] Phytosterols have been hailed as "the key to life" and have very important physiological functions, such as medicinal and health care values ​​such as preventing coronary atherosclerosis and promoting the degradation and metabolism of cholesterol; important intermediates for the synthesis of vitamin D3 and other steroid drugs body; hair growth, hair care and skin nutrition; dispersant, softener, antioxidant, etc. in the chemical textile industry. Recently, with the rapid development of scientific research, especially life science, oil science and engineering technology, phytosterols have been paid more and more attention to in the fields of medicine, food, chemical industry, feed, cosmetic additives and other fields. [0003] Phytosterols are widely found in various vegetable oils, nuts and other plant seeds in nature, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07J9/00C07J75/00
Inventor 童舜火王小贵柯美莲陈燕飞胡敏君
Owner ZHEJIANG DELEKANG FOOD CO LTD
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