Bletilla hyacinthina volatile oil extraction process

Distillation. Bletilla hyacinthina volatile oil extraction process can only be extracted using distillation. Bletilla hyacinthina, the name of traditional Chinese medicine. It is the dried tuber of Bletillastriata (Thunb.) Reichb.f. of Orchidaceae. Every year in September to October when the stem and leaves withered when the digging, remove the fibrous roots, wash, put in boiling water to cook or steam until no white heart, sun to half dry, remove the outer skin, sun dry.