Method for extracting grease from artemia or artemia eggs

Abstract

The invention provides a method for extracting grease from artemia or artemia eggs. In the method, a finished product of the grease is obtained by a plurality of steps of preprocessing the artemia or the artemia eggs, carrying out supercritical extraction, refining the grease and the like. Compared with a traditional method, the invention has the characteristics of low-temperature operation, little possibility of oxidation of unsaturated fatty acid, good quality, high yield of the extracted grease, no adoption of an organic solvent in the entire process, high-temperature operation avoidance, combined single-step operation of a plurality of procedures, low energy consumption, easy amplified production and the like.

Description

technical field [0001] The invention relates to a method for extracting oil, in particular to a method for extracting oil from Artemia or Artemia eggs. Background technique [0002] Artemia (Brine Shrimp) is also called Saltwater Artemia, and Chinese folks call it Saltworm or Artemia Shrimp. It belongs to the Arthropoda phylum in classification, with subphylum Gillia, Crustacea, Subclass Branchiopoda, no order, Saltwater Artemia family, Artemia. Artemia and Artemia eggs are rich in protein, amino acids, saturated fatty acids, unsaturated fatty acids and inorganic elements. Therefore, extracting oil from Artemia or Artemia eggs to prepare feed, food and medicine has become a research topic for Artemia. new direction of development. [0003] In the existing oil extraction process, mechanical pressing method, solvent extraction method, supercritical fluid extraction method and biological enzyme method are usually used. Among them, supercritical fluid extraction is a new type...

AI Technical Summary

Problems solved by technology

Among them, supercritical fluid extraction is a new type of extraction and separation technology developed in recent years. It can be operated at low temperature, avoiding the oxidation and decomposition of unstable unsaturated fatty acids, and there is no residual solvent, CO 2 Easy to obtain, low energy consumption, and has obvious advantages incomparable with other methods. At present, there is no application research report on supercritical extraction in artemia resource oils

And because this method has requirements on the moisture content of the extracted sample, the drying process will be adopted in the supercritical liquid extraction method. At present, direct heating and drying and first freezing and then vacuum drying are mainly used, but direct heating and drying are easy to accelerate. Oxidation of unsaturated fatty acids, first freezing and then vacuum drying scale is not easy to expand and consumes a lot of energy; therefore, the yield of oil obtained is low

In addition, there is a requirement for the moisture in the oil in the process of capsules and other products. The current dehydration methods for oil mainly include drying in an oven, drying with a desiccant such as anhydrous sodium sulfate, and ordinary vacuum drying. There are some shortcomings such as easy to oxidize, not easy to enlarge, and the time is too long.