FIELD: chemical and pharmaceutical industry. SUBSTANCE: extract is prepared of silkworm cocoon by extraction with ethyl alcohol at ratio 0.6: 1-0.1: 1.4. The process is carried out within 1.5-2 h at 40-60 C, it is followed by desired product separation and by distillation extragent of raw materials residue. The latter process takes place with the help of neutral gas at 70-80 C. EFFECT: increases extractive yield, improves the process. 1 tbl
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