A kind of method for graded preparation of Antarctic krill oil

Abstract

The invention provides a method for grading preparation of Euphausia superba oil, comprising the following steps: carrying out first-stage extraction on Euphausia superba powder by the use of acetone to obtain first-stage extracted Euphausia superba oil and first-stage Euphausia superba powder; carrying out second-stage extraction on the first-stage extracted Euphausia superba powder by the use of an alkanes solvent to obtain second-stage extracted Euphausia superb oil and second-stage extracted Euphausia superb powder; and carrying out third-stage extraction on the second-stage extracted Euphausia superba powder by the use of an alcohols solvent to obtain third-stage extracted Euphausia superba oil. By the use of the three different polar solvents for three-step extraction of Euphausia superb powder, refined grading of lipid is achieved and extraction of lipid in Euphausia superba powder also can be maximized.

Description

technical field

[0001] The invention belongs to the field of deep processing of marine organisms, and in particular relates to a method for graded preparation of Antarctic krill oil. Background technique

[0002] Antarctic krill (Euphausia superba), commonly known as Antarctic krill, is an important marine organism living in the Southern Ocean, and its resources are about 379 million tons. Antarctic krill fresh shrimp contains about 11.9-15.4% protein, 0.5-3.6% lipid, 3% ash, 2% sugar, and the rest is water. The lipid extracted from Antarctic krill is called Antarctic krill oil. In recent years, Antarctic krill oil has attracted increasing attention because of its unique structure and function.

[0003] The main component of common cooking oil is triglyceride (95%), while the composition of Antarctic krill oil is more complex. Studies have reported that the triglyceride content in Antarctic krill lipids is only 22.1-38.4%, while the polar lipid content is as high as 56.4-7...

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