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Method for extracting grape seed oil by ultrasound-assisted supercritical carbon dioxide technology as well as product of method and application of product

A grapeseed oil and carbon dioxide technology, which is applied in the production of fat oil/fat, refining of fat oil/fat, and fat production, can solve the problems of low quality of grapeseed oil, low extraction efficiency and high production cost, and achieve high purity of extracted products. , The effect of short extraction time and convenient operation

Inactive Publication Date: 2018-10-12
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Throughout these reports, although certain achievements have been made, the extraction efficiency of the supercritical extraction method used is low, the quality of the obtained grape seed oil is not high, the yield is low, and the production cost is high.

Method used

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  • Method for extracting grape seed oil by ultrasound-assisted supercritical carbon dioxide technology as well as product of method and application of product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] a. Pretreatment of grape seeds: optimize the raw grape seeds, wash with water to remove impurities and soil, then put the cleaned grape seeds into an oven for drying, and the temperature of the oven is controlled at 80 o C, the drying time is 4 h; the dried grape seeds are further crushed to 60 mesh by crushing equipment to obtain grape seed fragments, which are set aside;

[0025] b. Ultrasonic-assisted supercritical extraction: put 500 g of crushed grape seed fragments into a supercritical reactor, open the carbon dioxide steel cylinder, and the carbon dioxide gas is cooled into a liquid by a refrigerator, and then pressurized into the reactor by the autoclave middle. Turn on the ultrasonic device, control the ultrasonic power at 300 W, control a certain pressure (10 MPa) and temperature (50 o C), and keep the pressure for a certain period of time (60 min); after the extraction is completed, open the pressure relief port to reduce the pressure in the supercritical re...

Embodiment 2

[0029] a. Pretreatment of grape seeds: optimize the raw grape seeds, wash with water to remove impurities and soil, then put the cleaned grape seeds into an oven for drying, and the temperature of the oven is controlled at 80 o C, the drying time is 4 h; the dried grape seeds are further crushed to 80 mesh by crushing equipment to obtain grape seed fragments, which are set aside;

[0030] b. Ultrasonic-assisted supercritical extraction: put 500 g of crushed grape seed fragments into a supercritical reactor, open the carbon dioxide steel cylinder, and the carbon dioxide gas is cooled into a liquid by a refrigerator, and then pressurized into the reactor by the autoclave middle. Turn on the ultrasonic device, control the ultrasonic power at 400 W, control a certain pressure (20 MPa) and temperature (50 o C), and keep the pressure for a certain period of time (60 min); after the extraction is completed, open the pressure relief port to reduce the pressure in the supercritical re...

Embodiment 3

[0034] a. Pretreatment of grape seeds: optimize the raw grape seeds, wash with water to remove impurities and soil, then put the cleaned grape seeds into an oven for drying, and the temperature of the oven is controlled at 80 o C, the drying time is 4 h; the dried grape seeds are further crushed to 80 mesh by crushing equipment to obtain grape seed fragments, which are set aside;

[0035] b. Ultrasonic-assisted supercritical extraction: put 500 g of crushed grape seed fragments into a supercritical reactor, open the carbon dioxide steel cylinder, and the carbon dioxide gas is cooled into a liquid by a refrigerator, and then pressurized into the reactor by the autoclave middle. Turn on the ultrasonic device, control the ultrasonic power at 500 W, control a certain pressure (30 MPa) and temperature (80 o C), and keep the pressure for a certain period of time (60 min); after the extraction is completed, open the pressure relief port to reduce the pressure in the supercritical re...

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Abstract

The invention discloses a method for extracting grape seed oil by an ultrasound-assisted supercritical carbon dioxide technology as well as a product of the method and an application of the product. The method comprises the following steps: performing pretreatment crushing on dried grape seeds until 60-80-mesh grape seeds are obtained, placing the crushed grape seeds into a supercritical reactionkettle, controlling pressure of the supercritical reaction kettle to 10-40 MPa, controlling the temperature to 50-100 DEG C, and controlling pressure keeping time to 60-120 min; opening an ultrasonicdevice, and performing extraction to obtain primary grape seed crude oil; and finally, performing separation for two times by using a molecular distiller to obtain the high-purity grape seed oil. According to the method disclosed by the invention, an ultrasonic technology is combined with a supercritical carbon dioxide extraction technology, the ultrasound-assisted supercritical carbon dioxide technology is utilized to realize extraction of the grape seed oil, and purposes of high-efficiency extraction, separation without impurities and high purity of an extraction product are achieved; and the method disclosed by the invention has a simple operation process and short extraction time, reduces costs, improves efficiency of extraction separation, and has stronger technical novelty and creativity.

Description

technical field [0001] The invention relates to a method for extracting grape seed oil, in particular to a preparation method for extracting grape seed oil by ultrasonic-assisted supercritical carbon dioxide technology and its product and application. Background technique [0002] Grape seeds are the fruit seeds of grapes, accounting for 5% to 8% of the fresh fruit mass. In the production of grape wine, a large number of grape seeds will be produced, and random discarding will cause certain pollution to the environment. With the continuous increase of social and environmental pressure, the comprehensive utilization of these processed by-products has attracted more and more attention. A large number of studies have confirmed that grape seeds contain 14% to 15% of oil, of which unsaturated fatty acid content accounts for 92%, especially linoleic acid content as high as 76%; at the same time, it also contains vitamins A, D, E, K, P and other nutrients. Nutrition studies have...

Claims

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Application Information

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IPC IPC(8): C11B1/04C11B1/10C11B3/12
CPCC11B1/04C11B1/104C11B1/106C11B3/12B01D11/0203B01D11/0265B01D11/0288
Inventor 何丹农王敬锋金彩虹章龙
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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