The invention belongs to the technical field of extraction of
plant essential oil, and particularly relates to an extraction process of cumin
essential oil. The extraction process specifically comprises the following steps: pretreating cumin seeds, and then carrying out supercritical CO2 gradient subsection extraction to obtain
crude oil of a first incense section and
crude oil of a body incense and a bottom incense section in sequence; respectively carrying out degassing, cold
precipitation,
filtration and clarification on the two sections of
crude oil, carrying out molecular
distillation, and
cutting according to an accumulative
distillation ratio to obtain light, medium and heavy fractions and residual liquid; and finally, directionally blending all fractions from different crude oils according to a ratio to obtain a final product. The method comprises the following steps: carrying out gradient extraction on first incense and base incense components in cumin through a process of segmented enrichment, segmented refining and directional blending, respectively rectifying the first incense and base incense components into functional fractions, and then carrying out directional combination; the process can synergistically improve the
aroma level integrity,
processing adaptability and storage stability of the
essential oil under conventional equipment, and realizes designable
flavor.