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Extracting method for rice-bran-oil phytosterol

A technology of phytosterol and extraction method, which is applied in the field of extraction of rice oil phytosterol, can solve the problems of inability to achieve industrialized production, many residual chemical reagents, and insufficient extraction effect, and achieves low production cost, better product color and luster. The effect of promoting the application prospect is good

Active Publication Date: 2019-03-01
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have expensive equipment, high preparation costs, too much chemical reagent residue, are not suitable for consumption, and the extraction effect is not good enough
Therefore, the above methods more or less fail to meet the requirements of industrialized production.
There is no report on the use of this technology to assist in the extraction of rice oil phytosterols

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Put 60 mL of rice oil, 3 g of attapulgite and 420 g of steel balls with a diameter of 15 mm into a 300 mL ball mill jar of a high-energy planetary ball mill. After ball milling at a speed of 300 rpm for 0.5 h, take the ball mill liquid and filter it. The crude phytosterol solution was obtained by elution with alkane, and concentrated to obtain the crude phytosterol, which was then recrystallized from ethanol to obtain 0.72 g of rice oil phytosterol with a purity of 89%.

Embodiment 2

[0032] Put 10 mL of rice oil, 0.5 g of basic alumina, and two steel balls with a diameter of 15 mm into a 50 mL ball mill jar of a high-energy vibratory ball mill, and after ball milling at a frequency of 20 Hz for 2 h, take the ball milling liquid, filter, and The cake was eluted with n-hexane to obtain a crude phytosterol solution, which was concentrated to obtain a crude phytosterol and then recrystallized from ethanol to obtain 0.11 g of rice oil phytosterol with a purity of 87%.

Embodiment 3

[0034] Mix 60 mL rice oil, 3 g β -Cyclodextrin and 420 g of alumina ball milling beads with a diameter of 15 mm were put into a 300 mL ball mill jar of a high-energy planetary ball mill, and after ball milling at a speed of 400 rpm for 2 h, the ball milling liquid was taken, filtered, and the filter cake was eluted with n-hexane The crude phytosterol solution was obtained and concentrated to obtain the crude phytosterol and then recrystallized from ethanol to obtain 0.74 g of rice oil phytosterol with a purity of 91%.

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PUM

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Abstract

The invention discloses an extracting method for rice-bran-oil phytosterol. The extracting method includes the steps that rice bran oil and an adsorbing agent are jointly put into a ball mill and subjected to ball milling, and the obtained ball-milling liquid is filtered; a filter cake is eluted with a solvent to obtain a phytosterol crude product solution, the phytosterol crude product solution is concentrated, and a phytosterol crude product is obtained; a rice-bran-oil phytosterol product is obtained through ethyl alcohol recrystallization. The adsorbing agent is one or more of attapulgite,silica gel, activated carbon, beta-cyclodextrin, hydroxypropyl-beta-cyclodextrin, sepiolite and alkaline aluminum oxide. According to the extracting method, the extracting efficiency of the rice-bran-oil phytosterol is high, the rice bran oil and the adsorbing agent are fully mixed and are in contact with each other through repeated mechanical stress, and the phytosterol is more easily separatedout. The extracting method has the advantages of being high in phytosterol extraction rate, simple in technology, convenient to operate and the like.

Description

technical field [0001] The invention belongs to the technical field of oil deep processing, and relates to a method for extracting rice oil phytosterols. Background technique [0002] Rice Bran Oil (Rice Bran Oil) is also known as rice germ oil, and Japan, Southeast Asian countries and Taiwan are also called brown rice oil. Most of the micronutrients in rice are lost in vain as the rice bran falls off during the rice finishing process. Rice oil is made of fresh rice bran, which is refined and processed through scientific techniques. Its nutrients are as follows: 1. It is rich in oryzanol, which is a unique nutrient component of rice oil. Oryzanol is a strong antioxidant that regulates plant health. Nervous, improve sleep, the unique effect of effectively relieving fatigue. 2. Rich in natural vitamin E (tocotrienol), natural vitamin E has a strong antioxidant effect. 3. Rich in phytosterols. Phytosterols are a type of alcohol compound with cyclopentane perhydrophenanthrene...

Claims

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Application Information

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IPC IPC(8): C07J9/00
CPCC07J9/00
Inventor 张琦红曹永健任威苏为科
Owner ZHEJIANG UNIV OF TECH
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