Technology of extracting and refining fish oil from internal organs of silver carps

Abstract

The invention relates to a technology of extracting and refining fish oil from internal organs of silver carps, and belongs to the technical field of recycling freshwater fish scraps. According to the technology of extracting and refining the fish oil from the internal organs of the silver carps, firstly, the internal organs of the fresh silver carps are ground into thick liquid after fish gall bladders are removed from the internal organs of the fresh silver carps manually, alkaline protease is utilized to process the thick liquid to extract crude oil, then the crude oil is degummed with phosphoric acid, deacidified with sodium hydroxide, decolored with activated carbon and deodorized in vacuum mode, and then high-quality edible fish oil is extracted. Therefore, not only is waste of resources reduced, but also economic benefits of a freshwater fish processing enterprise are increased. According to the technology of extracting and refining the fish oil from the internal organs of the silver carps, due to the fact that water is not utilized to wash the internal organs of the fresh silver carps, the yield of fish oil can be increased by 5%, and the quality of the fish oil is higher. After the fish oil is refined from the internal organs of the silver carps, remaining material can be processed into high-calcium and high-protein fish meal, and the effect that the freshwater fish scraps are turned from waste into treasure is truly achieved. The problems that existing freshwater fish scraps are mostly used to feed fish in fish ponds in fresh mode or in dried mode, or are even discharged as the waste, and therefore the environment is polluted, and the resources are wasted are solved. The technology of extracting and refining the fish oil from the internal organs of the silver carps has very good social benefits and economic benefits.

Description

technical field [0001] The invention relates to an extraction and refining technology for fish oil in silver carp viscera, and belongs to the technical field of freshwater fish waste recycling. Background technique [0002] According to statistics from the Ministry of Agriculture of China, the total national aquatic product in 2012 is expected to be 55.3 million tons, ranking first in the world. The main aquaculture production areas of bulk freshwater fish in China are located in Hubei, Hunan, Anhui, Jiangxi, Zhejiang, Jiangsu and other provinces in the middle and lower reaches of the Yangtze River. The total amount of freshwater aquaculture in Hubei Province has ranked first in the country for 15 consecutive years, and the processing of freshwater fish has increased year by year, forming a new economic growth point for the aquatic industry. In the processing of bulk freshwater fish, the remaining material after slicing and taking the meat accounts for 50-70% of the fresh w...

AI Technical Summary

Problems solved by technology

Although the internal organs of silver carp are rich in physiologically active substances, they have not been extracted and utilized by people.