CHITIN PRODUCTION METHOD Russian patent published in 2013 - IPC A23L1/33 

FIELD: food industry.

SUBSTANCE: uses as the raw material is exoskeleton of Pandalus genus shellfishes. After three-times washing with tap water the raw material is twice deproteinised with 10% solution of sodium bicarbonate at the ratio of raw material: reagent equal to (1-3):(5-15) in the presence of surfactants at a temperature of 70°C during 120 with subsequent settling. The produced residue is washed with tap water till complete discontinuation of foaming and to a pH corresponding to a neutral medium and is expressed. One performs demineralisation with 0.1 M solution of hydrochloric acid at the ratio of raw material: reagent being (1-3):(4-12) at 20°C during 6 hours. The produced residue is washed with tap water to a pH corresponding to a neutral medium, expressed, twice washed with distilled water and dried at a temperature of 35-40°C until an air-dry condition.

EFFECT: ensuring chitin production.

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