FIELD: chemistry.
SUBSTANCE: dry leaves and tips of flower stalks with flowers and lady's mantle flower buds are crushed to 1 mm pieces, extracted with 70% aqueous acetone in ratio 1:8-12 while heating to 30-40°C for 90-150 minutes. Acetone is then distilled off. The water residue is washed with ethylacetate. The obtained extract is deposited onto a column with sephadex. The column is washed with 40% acetone. The acetone is distilled off. The water extract is frozen and lyophilically dried.
EFFECT: high output of the end product and avoiding use of toxic extraction agents.
2 ex, 2 dwg
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