| 摘要 |
FIELD: chemistry, biochemistry. ^ SUBSTANCE: invention relates to biotechnology. The proposed method comprises thermal processing of larva, separated from a substratum upon termination of their cultivation, for 2 to 15 min at 75 to 100C. Thermal processing over, larvae are crushed, chitine-containing fraction is separated from hemolymph. Now, the chitine-containing precipitate as-washed and crushed is subjected to enzymic hydrolysis at temperature 35 to 46C with pH of 6.5 to 8.5 till achieving amine nitrogen content not below 0.8 G/%. Then, the separated chitine-containing precipitate is subjected to alkaline hydrolysis at continuous mixing for 60 to 90 min at 55 to 65C. Finally, the aforesaid chitine-containing precipitate is subjected to demineralisation by 1.5 to 3.0 percent solution of hydrochloric or nitric acid for 30 to 40 min at 60 to 70C. After that, the precipitate containing chitine is rinsed with water till pH of 6.5 to 7.5 and dried. ^ EFFECT: increase in biological value of target products with simultaneous increase in their number and simplification of process method. ^ 4 cl, 1 ex |
