Method for extracting onion seed oil by supercritical carbon dioxide

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...

AI Technical Summary

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. Wang Hongji and others obtained onion seed oil through traditional organic extraction methods, and identified it as containing a variety of nutrients, and its fat is high in linoleic acid nutrition. However, this method cannot solve the problem of solvent residue and the interest rate is not high

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