Ultrasonic defluorination method for whole euphausia superba

Abstract

The invention discloses an ultrasonic defluorination method for whole euphausia superba. After being pretreated, the euphausia superba is soaked in a liquid medium in a working container for ultrasonic defluorination, wherein the euphausia superba is fresh whole euphausia superba, refrigerated whole euphausia superba or dried euphausia superba; the pretreatment is shell softening treatment or unfreezing; the combination type of an ultrasonic treatment device is a single-unit ultrasonic device, a two-unit ultrasonic device or a three-unit ultrasonic device; the liquid medium is a first component, a second component or a third component, the first component is water distilled for three times, deionized water, tap water or seawater, the second component is ethanol, acetone, diethyl ether or No.6 extraction solvent oil, and the third component is an acid solution, alkali solution or salt solution. The technology achieves the purpose of defluorination of the euphausia superba; the defluorinated euphausia superba is kept whole and prevented from breaking, and the sensory quality and the nutritive value are not influenced.

Description

technical field [0001] The invention belongs to the technical field of deep processing of Antarctic krill, and in particular relates to an ultrasonic defluorination method for whole Antarctic krill. Background technique [0002] Antarctic krill (Euphausia superb), also known as giant krill or Antarctic krill, is a key species in the food chain of the Southern Ocean ecosystem and one of the largest and most successful single species of biological resources on earth. According to estimates, the biomass of Antarctic krill is 600 million to 5 billion tons (there are large differences due to different estimation methods, and the lowest conservative estimate is 600 to 1 billion tons). The catchable amount is about 100-150 million tons, which is more than the total production of the world's existing fishery (99 million tons). At present, the total annual grain output of my country's 1.8 billion mu of cultivated land is less than 600 million tons, and the annual catchable amount of...

AI Technical Summary

Problems solved by technology

[0019] To sum up, the current defluorination technology of Antarctic krill mainly adopts the acid-base precipitation method of protein or the chemical precipitation method of calcium chloride, calcium oxide and other inorganic substances reacting with fluorine in addition to the conventional method of shelling and meat extraction to achieve defluorination. purpose, but the premise is that the whole Antarctic krill shrimp needs to be made into enzymatic hydrolysis or homogenate, which will inevitably destroy the unique appearance, texture, flavor, etc. of the whole Antarctic krill shrimp. Krill Acceptance Level

Although the conventional shelling method can reduce the impact of fluorine on the migration of Antarctic krill meat, due to the small size of Antarctic krill (about 3 to 4 cm in length), the processing time after harvesting is tight, and large-scale processing It is unrealistic to use manual dehulling, and mechanical means such as extrusion and centrifugal dehulling will inevitably destroy the individual shape of shrimp meat, and its end products can only be shrimp powder or minced shrimp meat, which limits its use. scope of application, which is not conducive to consumer acceptance

[0020] It is precisely because of the high fluorine characteristics of Antarctic krill and the lack of effective defluorination methods for whole shrimp that restrict its application in food, health care and medicine, making it only used for low-end purposes such as feed and bait , its economic value and social value have not been demonstrated, and it has become the main bottleneck in the development of Antarctic krill resources

Images