FIELD: feed industry.
SUBSTANCE: invention relates to the feed industry. A method for obtaining a dry extract of dried coltsfoot leaves for a feed additive for farm animals and poultry, characterized by the fact that the raw materials are crushed and moistened in 8-25% water-ethanol solution for 8-13 hours, then transferred to an extractor, filled with 18-33% water-ethanol solution, heated to 25°C and at the first stage, extraction is carried out under vacuum, after which the extract is drained, and the mass is re-filled with 50% water-ethanol solution, heated to 25°C and extraction is carried out under vacuum, after which the extract is drained, the resulting mass is poured with distilled water at the third stage and extraction is carried out at a modulus of 1 kg ÷ 2 l for 15-35 minutes at a relative pressure of (-0.80)-(-0.92) kgf/cm2, after which the extract is also drained, the extracts obtained are combined and concentrated in vacuum, and the thick extract is dried to a dry state.
EFFECT: invention makes it possible to optimize the modes of water-ethanol extraction and drying, reduce the consumption of reagents and the duration of the process, increase the yield of the target product and its quality, as well as reduce the costs of subsequent purification, concentration and drying of the resulting product.
5 cl, 2 ex
