METHOD FOR OBTAINING DRY PINE EXTRACT Russian patent published in 2024 - IPC C11B9/00 

FIELD: food industry.

SUBSTANCE: method for obtaining dry coniferous extract characterized by the fact that the original coniferous needles of coniferous plants are cleaned of foreign impurities by the separation method, then, to remove residual contaminants, the needles are washed in a washing machine, the water temperature should not exceed 25 °C, after which the needles are dried to a dry matter content of at least 95%, drying is carried out at a temperature not exceeding 40 °C, then the needles for grinding enter a hammer crusher with a rotation speed of the grinding elements in the range of 3,500-4,000 rpm, then the crushed needles enter an industrial Soxhlet extractor, in which the raw material is extracted with hexane until the difference in the absorption rate of a pure solvent from the absorption rate of the solvent that has passed through the mass of raw materials - crushed pine needles in a Soxhlet apparatus will be no more than 13^1/m, and is discharged into a vacuum drying apparatus, where at a pressure not higher than 3.03975⋅10⁴ Pa and temperature 17-35 °C residues of the extractant are removed until the moisture content in the target product is no higher than 5% of its mass.

EFFECT: ability to obtain dry pine extract with a solids content of at least 95%.

1 cl, 1 ex