Black ash
Planchonella obovata
Planchonella obovata is a plant species traditionally not associated with any known medicinal uses. Scientific studies have isolated 13 protobassic saponins from Palaquium formosanum kernels, identifying one as the most potent against PC-3 cells; however, no direct evidence specifically links these compounds to Planchonella obovata. The plant's essential oil demonstrated strong antimicrobial activity against certain bacteria and yeast, along with moderate larvicidal activity against mosquitoes. Additionally, genetic diversity in P. obovata populations varies significantly between old continental and young oceanic islands. Photosynthetic rates and PSII quantum yield of the plant were found to be lower under high light conditions compared to Hibiscus. No major safety issues or recorded drug interactions have been identified for this plant.
- Best evidence
- D
- Cautions
- —
Informational only. Traditional use does not mean proven effectiveness. Evidence and safety vary — check the cited sources.
What the science says
- The study isolated 13 protobassic saponins from Palaquium formosanum kernels, identifying arganin C as the most potent against PC-3 cells with an IC50 of 13.8 μM.
- Planchonella obovata had lower photosynthetic rates and PSII quantum yield compared to Hibiscus under high light conditions.
- Planchonella obovata essential oil showed strong antimicrobial activity against certain bacteria and yeast, with moderate larvicidal activity against mosquitoes.
- Genetic diversity in Planchonella obovata sensu lato varied between continental and younger oceanic island populations, influenced by island age and migration patterns.
Frequently asked questions
What is Black ash?
Black ash (Planchonella obovata) is a plant documented in FolkKB's traditional-medicine reference, drawn from sourced literature and cross-checked against the evidence.
What does the scientific evidence say about Black ash?
4 sourced findings are recorded for Black ash; the strongest carries evidence grade D. For example: The study isolated 13 protobassic saponins from Palaquium formosanum kernels, identifying arganin C as the most potent against PC-3 cells with an IC50 of 13.8 μM.
How strong is the evidence for Black ash?
The strongest finding for Black ash carries evidence grade D — preliminary or traditional. Grades run A (strongest) to D (preliminary or traditional).
Is Black ash safe? What are the side effects?
No major safety issues are recorded for Black ash in our sources, but the data may be incomplete. Consult a qualified professional before use.
Does Black ash interact with medications?
No drug interactions are recorded for Black ash in our sources. This does not rule them out — check with a pharmacist.
Is Black ash a proven treatment?
No. FolkKB is informational only. Traditional use and early findings are not proof of efficacy or safety — consult a qualified professional and never self-treat.
Sources
- T2 Light-use properties in two sun-adapted shrubs with contrasting canopy structures. literature abstract metadata
- T2 Cytotoxic protobassic acid saponins from the kernels of Palaquium formosanum. literature abstract metadata
- T2 Contrasting genetic diversity between Planchonella obovata sensu lato (Sapotaceae) on old continental and young oceanic island populations in Japan. literature abstract metadata
- T2 Loranthus tienyenensis Li and Planchonella obovata (R. Br.) Pierre: Essential Oil Composition, Biological Activity, and Molecular Docking. literature abstract metadata