Processing method of euphausia superba low in fluorine

Abstract

The invention relates to a processing method of euphausia superba low in fluorine, which comprises the following steps: (1) pretreating; (2) steam heating: steam heating euphausia superba flesh to 60 to 70 DEG C, carrying out heat preservation for 20 to 30 minutes, collecting water soluble extractum of the euphausia superba flesh; (3) processing the water soluble extractum: adding pure water in the water soluble extractum according to the mass ratio of the water extractum to the pure water, wherein the mass ratio is 1 to (8 to 10), adjusting the pH value to 7.0 to 7.5, adding in magnesium salt and enabling the concentration of the magnesium salt to be 0.04 to 0.85 percent, carrying out heat preservation for 1 to 2 hours under the temperature of 40 to 50 DEG C, filtering and taking supermatant to obtain a finished solution product of the water soluble extractum; (4) microwave heating: immersing the euphausia superba flesh subjected to the steam heating in a water-retaining agent, and the mass ratio of the euphausia superba flesh to the water-retaining agent is 1 to (3 to 5), heating for 5 to 10 minutes under the microwave power of 500 to 800W; (5) back boiling: immersing the euphausia superba flesh subjected to the microwave heating in the finished solution product of the water soluble extractum according to the mass ratio of 1 to (2 to 4), poaching for 10 to 15 minutes under the temperature of 50 to 60 DEG C; (6) packaging. The processing method is easy in operation; a finished product is low in fluorine content; the dissolution rate of the fluorine can reach more than 95 percent during processing; the lost nutrient substances are less; the loss ratio of protein is lower than 10 percent; the euphausia superba flesh of the product is good in taste.

Description

technical field [0001] The invention relates to the technical field of aquatic product processing, in particular to a method for processing low-fluorine Antarctic krill. Background technique [0002] Antarctic krill (Euphausia superba), also known as giant krill or Antarctic krill, is a krill that lives in the waters of Antarctica in the Southern Ocean. Antarctic krill is a shrimp-like invertebrate that lives in groups, sometimes with a density of 10,000-30,000 individuals / m 3 . They feed on tiny phytoplankton, from which they convert the energy from primary production to maintain their life cycle in the pelagic zone. They are key species in the Antarctic ecosystem. In terms of biomass, they may be the most abundant on Earth. successful animal species. Antarctic krill is the largest animal protein pool on earth. According to estimates, the biological reserves of Antarctic krill are 400-1.55 billion tons, and the annual sustainable catch is 70-200 million tons. The water ...

AI Technical Summary

Problems solved by technology

It can be seen that the high fluorine content has become the bottleneck of Antarctic krill processing, but the current mature defluorination method is mainly used in sewage treatment. If it is directly applied to the Antarctic krill defluorination process, it will cause the loss of krill protein and poor taste , chemical residues and other issues