Method of fluoride reduction in krill by extraction solvents

PURPOSE: A fluorine reduction method of krill using an extraction solvent is provided to remove or reduce fluorine from the collected krill during before processing or packaging using organic acid, inorganic acid, or an alkali solution. CONSTITUTION: A fluorine reduction method of krill using an extraction solvent comprises a step of adding 10-200 times the amount of fluorine extraction solvent by the weight of the krill to the collected krill for soaking and stirring the mixture for 2-60 minutes. The fluorine extraction solvent is one or more than two compound selected from organic acid, inorganic acid, and an alkali solution. The organic acid includes citric acid, tartaric acid, lactic acid, oxalic acid, succinic acid, malic acid, and formic acid. The inorganic acid includes hydrochloric acid, sulfuric acid, nitric acid, perchloric acid, boric acid, and phosphoric acid. The alkali solution includes sodium hydroxide, calcium hydroxide, an ammonia solution, sodium carbonate, potassium carbonate, magnesium carbonate, ammonium carbonate, ammonium chloride, urea, and ammonia salt.