Method for extracting onion seed oil by supercritical carbon dioxide

A carbon dioxide and onion seed technology, which is applied in the direction of fat oil/fat production and fat generation, can solve the problems of solvent residue, low interest rate, and less research on onion seed components, and achieve good development prospects, promote production, and inhibit The effect of thermal decomposition

Inactive Publication Date: 2009-06-10
NANJING AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0003] However, in recent years, most of the research on onion oil is limited to the extraction and analysis of onion oil from onion bulbs, and the research on the components of onion seeds is less
Studies have shown that the seeds of onion and garlic plants also contain rich chemical components.

Method used

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  • Method for extracting onion seed oil by supercritical carbon dioxide
  • Method for extracting onion seed oil by supercritical carbon dioxide
  • Method for extracting onion seed oil by supercritical carbon dioxide

Examples

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Example Embodiment

[0024] Examples:

[0025] (1) Raw material: yellow onion seeds;

[0026] (2) Drying: Dry the onion seeds below 45°C;

[0027] (3) Crushing: crush and sieve the dried onion seeds, and take the onion seed powder with a particle size of 40 mesh to 20 mesh;

[0028] (4) Supercritical CO 2 Extraction: Put the dried onion seeds into HA121-50-01 supercritical extraction device (produced by Jiangsu Nantong Huaan Supercritical Extraction Co., Ltd.), adjust the extraction temperature, extraction pressure and extraction time to achieve the best extraction temperature 43.7℃, extraction pressure 24.5MPa, extraction time 72min, directly collect the onion seed oil extract in a brown jar at the outlet of the extraction kettle.

[0029] The onion seed oil obtained by extraction is a bright yellow, clear oil, with a purity of over 99.2% and a yield of 12.08%. Chromatographic detection shows that onion seed oil is rich in oleic acid, linoleic acid, and palmitic acid. Fatty acids account for about 80...

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Abstract

The invention relates to a method for extracting onion rapeseed oil from onion rapeseeds through supercritical carbon dioxide, which belongs to the filed of processing of agricultural and sideline products and is specially used for developing and utilizing the onion rapeseed oil. The raw materials and the technology comprise the following: onion rapeseeds are dried and crushed and subjected to supercritical CO2 extraction; the extraction temperature is adjusted to be between 35 and 45 DEG C, the extraction pressure is adjusted to be between 15 and 25 MPa, and the extraction time is adjusted to be between 30 and 90 minutes; the onion rapeseed oil is obtained; and the purity of the onion rapeseed oil is more than 99.2 percent, and the yield of the onion rapeseed oil is 12.08 percent. The invention provides an advanced method for extracting the onion rapeseed oil. The method has the advantages of strong maneuverability, good safety, small damage to active ingredients, high yield and good repeatability.

Description

1. Technical field [0001] The invention relates to a method for extracting onion seed oil with supercritical carbon dioxide, belongs to the field of agricultural and sideline product processing, and is specially used for the extraction of onion seed oil. 2. Background technology [0002] Onion (Allium Cepa L.), also known as onion, jade onion or bulb onion, is a worldwide vegetable belonging to the genus Allium in the family Liliaceae. It has various varieties, wide distribution of resources, and rich nutrition. It is known as the "Queen of Cuisine" in European and American countries. Onions contain a lot of minerals, vitamins, amino acids and trace elements, and also contain volatile oils with various medicinal ingredients, namely onion oil. Its function of preventing and curing diseases has been paid more and more attention by people. [0003] However, in recent years, most of the research on onion oil is limited to the extraction and analysis of onion oil from onion bulb...

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Application Information

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IPC IPC(8): C11B1/10
Inventor 侯喜林张亚双王建军
Owner NANJING AGRICULTURAL UNIVERSITY
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