How is batch-to-batch consistency maintained for this Angelica root oil?
Consistency is managed by graded Dao-di raw material, fixed harvest windows, a standardized extraction/refining protocol and matching every batch to a retained reference by GC-MS fingerprint before release.
Consistency Controls
| Control | Practice |
|---|---|
| Raw material | Same Dao-di grade, harvest window and root fraction each season |
| Process | Fixed steam/CO2 parameters and triple-refining windows (185–210°C middle cut) |
| Analytical | GC-MS fingerprint matched to the retained reference standard |
| Physical | Density / refractive index / acid / peroxide within specification |
| Sensory | Organoleptic sign-off by the panel against reference |
- Natural oils vary within biological limits; our windows are tight but realistic for a Dao-di botanical
- Blending multiple harvest runs equalizes minor seasonal differences for contract supply
- Refined batches hold marker CV below 4.7% across ligustilide and butylphthalide
- Any out-of-spec batch is re-refined or rejected rather than blended down
Reference samples are retained for comparison for at least 24 months.
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This article was published on 2026-09-07, and last updated on 2026-09-07. The article will be continuously updated.
