Kakoli
Roscoea purpurea Sm. (also identified with Fritillaria roylei)
Kakoli (Roscoea purpurea Sm. (also identified with Fritillaria roylei)) is a plant used in Ayurveda, from the Zingiberaceae family. Not listed in WHO monographs; a critically endangered Ashtavarga member; recognized in Ayurvedic Pharmacopoeia of India.
| Botanical name | Roscoea purpurea Sm. (also identified with Fritillaria roylei) |
|---|---|
| Family | Zingiberaceae · other entries in this family |
| Order | Zingiberales |
| Pharmacopoeia status | Not listed in WHO monographs; a critically endangered Ashtavarga member; recognized in Ayurvedic Pharmacopoeia of India |
| Taxon identifiers | GBIF 5301320 · Wikidata Q163757 · NCBI Taxonomy 97783 |
Names and identification
| Language | Name |
|---|---|
| English | Kakoli |
| Latin/Botanical | Roscoea purpurea Sm. (also identified with Fritillaria roylei) |
Key Phytochemical Constituents
- Phenolic acids
- Flavonoids
- Diterpenoids
- Carotenoids (including 15-methyl retinol - first report)
- Oleic acid (unsaturated fatty acid)
- Linoleic acid
- Terpenoids
- Minerals (calcium, iron, phosphorus)
- Polysaccharides
How does it work?
- Immunomodulatory action through stimulation of both T-cell and B-cell mediated immune responses, with polysaccharide and flavonoid fractions playing key roles
- Hepatoprotective mechanism involving antioxidant defense enhancement (SOD, CAT, GSH) and inhibition of lipid peroxidation in liver tissue
- Antidiabetic and hypolipidemic activity through modulation of glucose and lipid metabolism pathways, with phenolic compounds acting as alpha-glucosidase inhibitors
Which traditional uses are supported by research?
- Immunomodulatory and rejuvenation properties validated through preclinical studies demonstrating enhanced immune cell activity, confirming Rasayana application
- Hepatoprotective activity confirmed through experimental liver injury models, supporting traditional use in liver health
- Antioxidant and nutritive properties validated through chemical profiling showing rich mineral and carotenoid content, confirming traditional use as a body strengthener
What do recent clinical trials show?
- Balkrishna A, Joshi M, Varshney Y and others 2024. In-depth phytochemical profiling of Roscoea purpurea (Kakoli): Comparative UHPLC-MS/QToF and GC-MS/MS analysis of supercritical CO(2) fluid - and conventional solvent - based extractive processes. Journal of pharmaceutical and biomedical analysis. PMID 39197202 · doi:10.1016/j.jpba.2024.116444
First-time identification of carotenoid metabolite 15-methyl retinol in the species; fatty acid analysis of supercritical fluid extract revealed elevated unsaturated fatty acids, particularly oleic and linoleic acids.
2 further claims previously listed here could not be traced to a published paper and have been removed. An absence here means we could not identify the source, not that no work exists.
Recent safety updates
- Traditionally used safely as part of Ashtavarga in Chyawanprash and other rejuvenating formulations; no documented adverse effects at Ayurvedic therapeutic doses
- Critically endangered Himalayan species; authentication challenges and frequent substitution with other species pose safety and efficacy concerns in commercial products
Dosage forms and preparation
Dosage Forms: Churna (tuber powder), Kashayam (decoction), Capsule, Avalehya (confection), Chyawanprash ingredient
Standard Dosage: 3-6g tuber powder twice daily; 50-100ml decoction; as component of Chyawanprash
Bioavailability: Roscoea procera (syn. Fritillaria roylei per some references) - one of the Ashtavarga group. Contains mucilaginous polysaccharides, steroidal saponins, and glycosides. Mucilage acts locally as demulcent. Steroidal saponins may be hydrolyzed by gut bacteria to absorbable sapogenins. Very limited modern pharmacokinetic data due to extreme rarity of authentic material.
Optimal Timing: With warm milk or ghee as Rasayana tonic; as part of Chyawanprash formulation
Standardized Extract: No standardized extract available due to species rarity. Authentication by DNA barcoding (ITS2, matK) is the primary quality parameter.
Shelf Life: 2 years (dried tuber powder if authentic); substitutes follow their respective shelf-life specifications
Storage: Cool, dry place below 25°C, protected from moisture. Airtight containers.
Marker Compounds: Steroidal saponins (if authentic material available), Mucilage polysaccharides, DNA barcode authentication is primary identification method
Extraction Methods
- Aqueous decoction (traditional)
- Hydroalcoholic extraction (50:50)
- Traditional processing as part of Ashtavarga for Chyawanprash and other compound formulations
Synergistic Combinations
- With Kshira-Kakoli (paired herb in Ashtavarga)
- With Jivaka and Rishabhaka as part of Ashtavarga Rasayana
- With Ashwagandha for strength and vitality
- With Shatavari for nutritive and galactagogue action
Published research
Literature indexed in PubMed that concerns this subject, grouped by study type. A paper appearing here is a record of what has been published, not evidence that the subject works, and laboratory or animal results do not transfer to people. Study titles link to PubMed so you can read the source rather than take our word.
Other clinical studies and reviews1
- 2024. In-depth phytochemical profiling of Roscoea purpurea (Kakoli): Comparative UHPLC-MS/QToF and GC-MS/MS analysis of supercritical CO(2) fluid - and conventional solvent - based extractive processesJournal of pharmaceutical and biomedical analysis. PMID 39197202 · doi:10.1016/j.jpba.2024.116444
Laboratory and animal studies8
- 2021. Coronarin K and L: Two Novel Labdane Diterpenes From Roscoea purpurea: An Ayurvedic Crude DrugFrontiers in chemistry. PMID 33968897 · doi:10.3389/fchem.2021.642073
- 2021. Corrigendum: Coronarin K and L: Two Novel Labdane Diterpenes From Roscoea purpurea: An Ayurvedic Crude DrugFrontiers in chemistry. PMID 34888297 · doi:10.3389/fchem.2021.798461
- 2020. Self-assembly of naturally occurring stigmasterol in liquids yielding a fibrillar network and gelRSC advances. PMID 35495245 · doi:10.1039/c9ra10376g
- 2018. Reproductive isolation in alpine gingers: How do coexisting Roscoea (R. purpurea and R. tumjensis) conserve species integrity?Evolution; international journal of organic evolution. PMID 29992542 · doi:10.1111/evo.13546
- 2016. Coevolutionary elaboration of pollination-related traits in an alpine ginger (Roscoea purpurea) and a tabanid fly in the Nepalese HimalayasThe New phytologist. PMID 27112321 · doi:10.1111/nph.13974
- 2015. Nutritional evaluation, antioxidant studies and quantification of poly phenolics, in Roscoea purpurea tubersBMC research notes. PMID 26223698 · doi:10.1186/s13104-015-1290-x
- 2015. Reversed-phase high-performance Liquid Chromatography-ultraviolet Photodiode Array Detector Validated Simultaneous Quantification of six Bioactive Phenolic Acids in Roscoea purpurea Tubers and their In vitro Cytotoxic Potential against Various Cell LinesPharmacognosy magazine. PMID 26929586 · doi:10.4103/0973-1296.168944
- 2015. Out of Africa: evidence of the obligate mutualism between long corolla tubed plant and long-tongued fly in the HimalayasEcology and evolution. PMID 30151127 · doi:10.1002/ece3.1784
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