Method for extracting krill oil with high phospholipid content from krill

Abstract

The invention discloses a method for extracting krill oil with high phospholipid content from krill. In the method, Antarctic krill is taken as a raw material, the dried Antarctic krill raw material is ground into krill powder, the krill powder is extracted by using an organic solvent, shear extraction is adopted in the extraction process, extracting solutions are mixed and residual organic solvent is removed from the mixed extracting solution through evaporation, and the Antarctic krill oil with 40 to 45 percent of phospholipid is obtained. The process is easy to operate, a final product has high phospholipid content, and the method can serve as the most simple and feasible method for extracting oil, particularly oil with rich phospholipid.

Description

technical field

[0001] The invention relates to a method for extracting krill oil from Antarctic krill powder, in particular to a method for extracting krill oil rich in high phospholipid content. Background technique

[0002] Antarctic krill is a kind of crustacean plankton mainly distributed in the Southern Ocean, and its reserves are astonishing, about 600-1000 million tons. The fat in Antarctic krill accounts for about 2% to 4% of the wet weight. Main fatty acid types and contents include: DHA9.3%~14.2%, EPA15.0%~20.5%, linoleic acid 2.4%~3.8%, linolenic acid 1.3%~3.7%, palmitic acid 21.1%~23.2%, etc. Saturated fatty acids make up the majority. The autolytic enzymes in Antarctic krill can be inactivated by heating to inactivate the enzyme, preventing Antarctic krill from degrading itself. Krill oil rich in phospholipids plays an important role in improving memory, preventing Alzheimer's disease, preventing cardiovascular and cerebrovascular diseases and preventing ath...