Synonymous:fennel sweet oil;sweet fennel oil;fennel oil
Preparation method:
It is obtained by drying, grinding and steam distillation of the mature fruit of sweet fennel or Huaixiang, a perennial herb in Umbelliferae. The yield was about 5.0%.
Quality standard:
Optical rotation: + 12 ° ~ + 24 °
Heavy metal test (GT-16-5): negative
Freezing point: ≥ 3.0 ℃
Boiling point: 160 ~ 220 ℃
Solubility in alcohol (OT-43): 1ml is soluble in 1ml of 90% ethanol
Packaging and storage:
25kg / barrel, 50kg / barrel, 180kg / barrel, sealed and stored in a dark, cool and dry place.