Method for extracting phospholipid from heads of hypophthalmichthys molitrix and product of method

Abstract

The invention belongs to the technical field of phospholipid extraction with a large amount of cultured freshwater fishes and particularly relates to a method for extracting phospholipid from heads of hypophthalmichthys molitrix and a product of the method. The method includes steps: 1) chopping cleaned heads of hypophthalmichthys molitrix into square fragments with the side length being 1-2cm; 2) mixing the fragments with ethanol with the volume fraction being 95% according to a mass volume ratio of 1:10-1:20 to obtain to-be-treated products; 3) subjecting the to-be-treated products to high-speed crushing of the fragments in a flash extraction device to obtain serous fluid; 4) filtering the serous fluid to obtain ethanol extract; 5) removing ethanol from the ethanol extract, mixing with acetone according to a mass volume ratio of 1:5-1:10, centrifuging, removing acetone supernatant, and removing residual acetone to obtain a finished product. High-efficiency extraction of the phospholipid from the heads of the hypophthalmichthys molitrix is realized by an extremely simple technical process, efficient process control and adoption of easily-acquirable extracting solution harmless to extract components.

Description

technical field [0001] The invention belongs to the technical field of extracting phospholipids from bulk cultured freshwater fish, and in particular relates to a method for extracting phospholipids from silver carp heads and a product thereof. Background technique [0002] China is one of the most developed countries of freshwater fishery in the world, with an annual output of more than 15 million tons of freshwater fish; Silvercarp (Hypophthalmichthysmolitrix), as one of the main freshwater fish species in my country, has strong adaptability, fast growth, and an annual output of 300 tons. However, due to the restrictions on the consumption habits of freshwater fish in the international and domestic markets, as well as the processing characteristics of the fish itself, the flavor and taste and other factors, its market value is relatively low, and it needs to be further developed and utilized. [0003] Domestic studies have found that the fatty acid composition of silver car...

AI Technical Summary

Problems solved by technology

Aquatic products generally contain high water content (generally above 80%). The existence of water will affect the extraction effect of organic solvents. The raw materials need to be dried during extraction. Ordinary drying will cause lipid oxidation in raw materials, affecting The quality of the extracted phospholipids, freeze-drying can maintain the quality of the raw lipids well, but the cost is too high when applied in production

According to the different extraction characteristics of solvents, some researchers use the extraction method of binary mixed solvent system to improve the extraction rate of phospholipids. However, the mixed solvent is not easy to separate and recover, and it is difficult to realize recycling in production.