Method for extracting lipid component

Abstract

The invention discloses a method for extracting lipid components, which performs lipid components extraction in various raw materials by adopting subcritical extraction technology with fluorine-containing napthene low-pressure liquified gas as an extraction medium; by using the characteristics of stable chemical properties, safety, no toxicity, nonflammability, and lipid component solubility after liquefaction for fluorine-containing napthene, the method extracts lipid components (grease, lipoid, oil-soluble pigments, essential oil, wax, etc) in some raw materials at a low temperature and pressure; the energy consumption is low; the extraction efficiency is high; the product quality is good; normal temperature or low temperature operation of the whole process is realized; various functional components in the raw materials are ensured to not be destroyed thermally to a maximum extent; degreased meal can be used for secondary deep development; the invention facilitates the realization of the comprehensive utilization and high added value processing of raw materials, and has important application value.

Description

technical field [0001] The invention relates to lipid processing technology, in particular to a method for extracting lipid components. Background technique [0002] Lipids are a class of natural organic compounds that contain alkyd esterification structures, are soluble in organic solvents but not in water, are essential nutrients for the human body, and are important components of the human body, including fats and lipids. Commonly referred to as fats include fats and oils, those that are in a solid state at room temperature are called "fat"; those that are in a liquid state are called "oil". Daily edible animal and vegetable oils, such as lard, vegetable oil, soybean oil, and sesame oil, are all fats and oils, that is to say, daily edible oils are fats. Lipids are substances very similar to fats and oils. There are many types, mainly including: lecithin, neurophospholipids, cholesterol and lipoproteins. The so-called lipid components also include some fat-soluble pigmen...

AI Technical Summary

Problems solved by technology

[0006] In recent years, some new oil extraction processes have also been developed. There is a method of using water instead of solvent to simultaneously produce oil and protein with the help of enzymes. This method is still in the experimental stage in the world. Although the reaction conditions Mild, the main quality indicators of the product are similar to those of the solvent extraction method, but the yield of oil is only 75%~90%, and the yield of protein is about 65%; with supercritical CO 2 The extraction method has the highest product quality, high oil yield, and low temperature during processing, but this method requires high equipment, limited production scale, and high production cost, which is not suitable for industrial production; there is also a method called The method of subcritical fluid extraction is a new method of extracting target components from natural products by using the fluid in the subcritical state as the solvent, and successively undergoing processes such as leaching, evaporation, desolventization, compression, and condensation recovery with the solute in the system. When applied to oil extraction, propane or butane is mainly used. It is non-toxic, non-thermally processed, and the active product that retains raw materials is not damaged or oxidized. It can be used for industrialized large-scale production, energy saving, and low operating cost. It has the advantages of easy separation from the product, etc., but the solvent is volatile, flammable and explosive, and has high requirements on production equipment, environment and daily operation, and there are extremely serious safety hazards, which limit its large-scale application