Glycoside preparation from Veronica officinalis L. plants with fungicidal action on Alternaria alternata

摘要

The invention relates to fungicidal preparations, namely to a glycoside preparation from Veronica officinalis L. plants with fungicidal action on Alternaria alternata.The preparation, according to the invention, comprises an aqueous solution of total extract of glycosides from Veronica officinalis L. plants with a concentration of 5 x (10-4…10-2)%, obtained from the aboveground part of the plant by triple extraction with an aqueous methanol solution, concentration of extract by vacuum distillation, double benzene extraction of ballast substances, chromatography of purified extract on polyamide column with elution in the water-methanol system in a ratio of 4:1 and subsequent concentration of eluates to a dry residue.