METHOD FOR OBTAINING THE PREPARATION "EXTRACORE" Russian patent published in 2021 - IPC A61K36/15 A61K129/00 B01D11/02 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture and pertains to a method for obtaining a preparation for plant growth regulation. A method for obtaining a preparation for plant growth regulation, including extraction of dried and ground raw materials from larch with an aqueous solution of ethyl alcohol while heating, separation and cooling of the aqueous part of the extract, supply thereof to a chromatographic column with a hydrophobic polydivinylbenzene-based sorbent and separation of fractions containing active substances eluted with an alcohol solution and mixed in the total volume, then sequentially supplied to a vacuum evaporation unit and for spray drying, through a filter, wherein larch bark crushed to the size of 1 to 3 mm is extracted, extraction is executed with a 40 to 60% aqueous-ethanol solution of alcohol at a temperature of 60°C with a raw materials : extractive agent ratio of 1:7.3, the aqueous part of the extract cooled to 37°C is first supplied to the ultrafiltration unit through nano- and microfilters for thickening and separation into an aqueous-alcohol solution and a concentrated extract, and then the concentrated extract is supplied to the chromatographic column, wherein elution is executed with 5 to 10% ethyl alcohol.

EFFECT: described method provides a possibility to obtain a preparation effective for plant growth regulation.

1 cl, 1 ex