Black Galingale (กระชายดำ)
Kaempferia parviflora
A Thai rhizome herb known for its dark purple-black flesh, valued for methoxyflavone content and traditionally used as an energy tonic.
Lab results
- Marker compound: 5,7-dimethoxyflavone
- Assay: HPLC, at least 2.0% total methoxyflavones
- Extraction: 95% ethanol
- Residual solvent: within ICH Q3C limits