Hermetica Superfood Encyclopedia
The Short Answer
Calophyllum inophyllum bark and leaves are rich in phenolic compounds (up to 289.12 mg GAE/g in methanolic leaf extract), flavonoids (410.4 mg QE/g), tannins, triterpenoids, and the dipyranocoumarin calophyllolide, which collectively drive antioxidant, antimicrobial, and anti-inflammatory activity through free radical scavenging and membrane-disruption mechanisms. In vitro studies demonstrate potent antioxidant activity (DPPH IC₅₀ as low as 0.004 mg/mL for methanolic bark extract) and antibacterial efficacy with hexane bark extract producing a 17.96 mm zone of inhibition against Staphylococcus aureus, supporting its traditional Samoan use for wound care, though human clinical trial data remain absent.
CategoryHerb
GroupPacific Islands
Evidence LevelPreliminary
Primary KeywordFue Sina Calophyllum inophyllum benefits
Fue Sina — botanical close-up
Health Benefits
**Wound Healing Support**: Bark and leaf extracts contain tannins (7
68%) and flavonoids that create astringent and antimicrobial barriers on wound surfaces, a mechanism consistent with the traditional Samoan application of bark and leaf preparations directly to wounds and skin injuries.
**Antioxidant Protection**
Methanolic leaf extracts yield exceptionally high total phenolic content (289.12 mg GAE/g) and flavonoid content (410.4 mg QE/g), conferring robust free radical scavenging capacity with DPPH IC₅₀ values as low as 0.054 µg/mL, suggesting potential for reducing oxidative tissue damage.
**Antimicrobial Activity**: Hexane bark extract demonstrated a 17
96 mm inhibition zone against Staphylococcus aureus in vitro, and minimum inhibitory concentrations below 0.098 mg/mL were recorded against Bacillus cereus across 11 of 15 extracts tested, indicating broad-spectrum antibacterial potential.
**Anti-inflammatory Properties**: Triterpenoids (2
48%) and polyphenols (2.53%) identified in leaf extracts are established mediators of prostaglandin and cytokine pathway modulation, providing a phytochemical basis for the traditional use of leaf poultices in reducing inflammation associated with skin wounds.
**Anticancer Potential (Preclinical)**
In vitro studies have identified selective cytotoxicity against lung cancer cell lines, with calophyllolide and phenolic fractions implicated, though mechanistic pathways and in vivo relevance remain to be established in rigorous studies.
**Antiviral and Antiplatelet Activity**
Phytochemical screenings report antiviral and antiplatelet coagulation effects attributed to coumarin derivatives including calophyllolide, which at 0.23% by weight in September-harvested seeds represents a potentially pharmacologically relevant concentration.
**Antidyslipidemic and Enzyme Inhibitory Effects**
Reported biological activities include antidyslipidemic and enzyme inhibitory properties, likely mediated by triterpenoid and flavonoid fractions acting on lipase and related metabolic enzymes, though these effects have not been confirmed in human clinical studies.
Origin & History
Natural habitat
Calophyllum inophyllum, commonly called Tamanu or Alexandrian Laurel, is native to tropical Asia and the Indo-Pacific region, thriving in coastal and littoral forests from East Africa through South and Southeast Asia to the Pacific Islands including Samoa, Fiji, and Hawaii. The tree grows best in sandy, well-drained soils in humid tropical climates with high rainfall, often colonizing shorelines and forest margins at low elevations. In Samoa, where it is called Fue Sina, it has been cultivated and wildcrafted as part of traditional agroforestry systems, valued for both its medicinal bark and leaves and its large, fragrant flowers.
“In Samoa, Calophyllum inophyllum—known locally as Fue Sina—holds an established place in traditional healing practices, with bark and leaf preparations used specifically for the treatment of wounds, consistent with the documented astringent and antimicrobial properties of its tannin-rich extracts. Across the broader Pacific Islands, the tree has been revered in multiple cultures: in Hawaii it is known as Kamani, and in Tahiti and Fiji its seed oil has been applied to skin conditions, hair, and musculoskeletal complaints for generations as a cornerstone of indigenous dermatological medicine. The tree's resin, exuded from stems when cut, has traditionally been employed as a natural antiseptic and wound sealant in island communities across the Indo-Pacific, a use that aligns with its documented antimicrobial activity against gram-positive bacteria. In South and Southeast Asian ethnomedicine, roots and leaves have been utilized in folk treatments for rheumatism, ulcers, and skin diseases, and the species appears in the traditional pharmacopeias of India, the Philippines, and Indonesia, underscoring its pan-Pacific cultural significance.”Traditional Medicine
Scientific Research
The current evidence base for Calophyllum inophyllum is composed entirely of in vitro phytochemical, antioxidant, antimicrobial, and cytotoxicity studies, along with computational in silico pharmacokinetic modeling; no human clinical trials have been published as of the available literature. Phytochemical optimization studies have rigorously characterized extraction conditions, establishing that 80% methanol at 30°C for 48 hours maximizes total phenolic and flavonoid yields, and antimicrobial bioassays have produced reproducible minimum inhibitory concentration data against standard bacterial strains. The breadth of reported biological activities—including antifilarial, larvicidal, anticancer, antiviral, and antidyslipidemic effects—is supported by multiple independent laboratory investigations, but the translation of these findings to clinical efficacy in humans remains entirely undemonstrated. Given the complete absence of randomized controlled trials, cohort studies, or systematic reviews, the evidence base is classified as preliminary, and all claimed benefits should be interpreted with significant caution pending human pharmacological investigation.
Preparation & Dosage
Traditional preparation
**Traditional Samoan Bark Poultice**
Fresh or dried bark is crushed or boiled and applied topically to wounds; no standardized preparation protocol or controlled dosing exists for this method.
**Traditional Samoan Leaf Preparation**
Fresh leaves are applied as poultices or decoctions directly to wound sites; quantities used in traditional practice are empirical and unstandardized.
**Methanolic Extract (Research Grade)**
Optimal laboratory preparation uses 80% methanol at 30°C for 48 hours by maceration, yielding 2.41–2.58% extract by weight with maximum phenolic and flavonoid content; this preparation is not currently available as a commercial supplement.
**Seed Oil (Tamanu Oil, Related Preparations)**
Cold-pressed seed oil from Calophyllum inophyllum is commercially available and applied topically for skin conditions; no standardized concentration of calophyllolide is established for commercial products.
**Calophyllolide Content Reference**
23 mg/100g callus, but no supplemental dose has been established
Seeds harvested in September contain approximately 0.23% calophyllolide by weight; tissue culture techniques can increase yields to 45..
**No Established Therapeutic Dose**
There is no clinically validated dose for any oral or topical preparation of bark or leaf extract; all dosing referenced in research is for experimental extraction purposes only.
Nutritional Profile
Calophyllum inophyllum is not consumed as a food source and does not contribute meaningfully to dietary macronutrient or micronutrient intake. Its pharmacological relevance lies in its secondary metabolite profile: methanolic leaf extracts contain total phenolics at 289.12 mg GAE/g and total flavonoids at 410.4 mg QE/g, representing an exceptionally dense polyphenol concentration relative to many medicinal plants. Phytochemical screening of leaf extracts identifies alkaloids (11.51%), tannins (7.68%), polyphenols (2.53%), triterpenoids (2.48%), flavonoids (2.37%), and saponins (2.16%) as the primary bioactive classes by proportion. The specialized dipyranocoumarin calophyllolide is present at 0.23% by weight in seeds and is unique to the Calophyllum genus; seed oil fractions contain fatty acids and lipid-soluble coumarins whose bioavailability in topical application is presumed high, though oral bioavailability data from human studies are not available.
How It Works
Mechanism of Action
The primary antioxidant mechanism of Calophyllum inophyllum extracts is attributed to their exceptionally high polyphenol and flavonoid content, which donate hydrogen atoms to neutralize reactive oxygen species through direct free radical scavenging, with antioxidant activity strongly correlated to total phenolic content across bark and leaf fractions. Calophyllolide, a dipyranocoumarin unique to this species, is hypothesized to inhibit platelet aggregation and exhibit antiviral activity through interference with coagulation cascade enzymes and viral replication machinery, though specific molecular targets have not been confirmed in mechanistic studies. In silico ADME analysis of flower volatile compounds eugenol and caryophyllene oxide predicts high gastrointestinal absorption and blood-brain barrier permeability with minimal cytochrome P450 inhibition, suggesting favorable oral pharmacokinetics and possible central nervous system bioavailability for these constituents. Tannins contribute to wound-healing and antimicrobial effects by precipitating surface proteins on microbial membranes and forming protective complexes over wound tissue, while alkaloids (11.51% of phytochemical profile) may contribute to analgesic and anti-inflammatory activity through as-yet uncharacterized receptor interactions.
Clinical Evidence
No human clinical trials have been conducted on Calophyllum inophyllum bark or leaf preparations for any indication, including wound healing, antimicrobial application, or antioxidant therapy. The totality of available evidence consists of in vitro bioassays and computational pharmacokinetic modeling, which, while internally consistent and methodologically sound, cannot be extrapolated to predict clinical outcomes, optimal dosing, or therapeutic safety margins in human populations. Effect sizes reported from laboratory models—including sub-microgram DPPH IC₅₀ values and millimeter-scale antibacterial inhibition zones—are promising as a basis for hypothesis generation but do not constitute clinical proof of efficacy. Confidence in any therapeutic recommendation based on the current literature is therefore very low, and rigorous Phase I and Phase II human studies are needed before clinical use can be endorsed.
Safety & Interactions
No formal human safety data, toxicological studies, or established maximum tolerated doses exist for oral or topical preparations of Calophyllum inophyllum bark or leaf extracts, representing a critical gap in the scientific literature that precludes confident safety recommendations. In silico pharmacokinetic modeling of specific flower volatile compounds (eugenol, caryophyllene oxide) predicts minimal cytochrome P450 inhibition, suggesting a lower risk of pharmacokinetic drug interactions for those specific constituents, but this cannot be generalized to whole bark or leaf extracts containing alkaloids, tannins, and coumarins. Calophyllolide and related coumarin derivatives carry a theoretical anticoagulant interaction risk with warfarin and other antiplatelet or anticoagulant medications based on the class pharmacology of coumarins, and individuals on such medications should avoid use without medical supervision. Pregnancy, lactation, pediatric use, and hepatic or renal impairment represent absolute contraindication categories for which no safety data exist; traditional topical use of leaf and bark preparations is generally considered low-risk in the ethnobotanical literature, but systemic absorption risks from any preparation have not been characterized.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
Calophyllum inophyllumTamanuAlexandrian LaurelKamani (Hawaii)Foraha (Madagascar)BallnutBeach Calophyllum
Frequently Asked Questions
What is Fue Sina used for in traditional Samoan medicine?
In traditional Samoan medicine, Fue Sina (Calophyllum inophyllum) bark and leaves are applied to wounds as poultices or decoctions to promote healing and prevent infection. This use is supported by in vitro evidence showing that bark extracts exhibit antibacterial activity against Staphylococcus aureus (17.96 mm inhibition zone) and Bacillus cereus (MIC below 0.098 mg/mL), consistent with the plant's high tannin and flavonoid content acting as astringents and antimicrobials on wound surfaces.
What are the main bioactive compounds in Calophyllum inophyllum?
The primary bioactive compounds in Calophyllum inophyllum include phenolics (up to 289.12 mg GAE/g in leaf extract), flavonoids (up to 410.4 mg QE/g), tannins (7.68%), alkaloids (11.51%), triterpenoids (2.48%), and the unique dipyranocoumarin calophyllolide, which is present at approximately 0.23% by weight in September-harvested seeds. These compounds collectively contribute to the plant's reported antioxidant, antimicrobial, anti-inflammatory, antiviral, and antiplatelet activities observed in laboratory studies.
Is Calophyllum inophyllum safe to use, and are there drug interactions?
No formal human safety or toxicology studies have been conducted on Calophyllum inophyllum bark or leaf preparations, making it impossible to confirm safety or establish maximum safe doses. The presence of calophyllolide, a coumarin-class compound, raises a theoretical risk of interaction with anticoagulant medications such as warfarin; individuals taking blood thinners, pregnant or breastfeeding women, and those with liver or kidney disease should avoid use without medical supervision.
Has Calophyllum inophyllum been tested in clinical trials?
As of the available scientific literature, no human clinical trials have been conducted on Calophyllum inophyllum for any indication, including wound healing or infection management. All evidence derives from in vitro phytochemical and antimicrobial studies and computational pharmacokinetic modeling, which, while scientifically informative, cannot confirm clinical efficacy or safety in humans. This represents a significant evidence gap, and any therapeutic use should be considered experimental.
What is calophyllolide and why is it significant?
Calophyllolide is a dipyranocoumarin compound unique to the Calophyllum genus, found at approximately 0.23% by weight in seeds of Calophyllum inophyllum harvested in September, with tissue culture techniques capable of boosting yields to 45.23 mg/100g callus. It is considered pharmacologically significant because coumarin-class compounds are broadly associated with anticoagulant, antiviral, and anti-inflammatory biological activities, and calophyllolide specifically has been linked to antiplatelet and antiviral effects in preclinical screening studies, though its clinical application has not yet been validated in human trials.
What is the difference between Fue Sina bark extract and leaf extract for wound healing?
Both bark and leaf extracts of Calophyllum inophyllum contain wound-healing compounds, but bark extracts typically contain higher concentrations of tannins (7.68%) that provide stronger astringent and antimicrobial properties on wound surfaces. Leaf extracts are notably rich in phenolic compounds (289.1 mg/g in methanolic extracts) and offer superior antioxidant protection, making them better suited for systemic antioxidant support rather than topical wound barrier formation. Traditional Samoan medicine applied both preparations directly to wounds, suggesting complementary rather than interchangeable roles.
Who should avoid using Fue Sina or Calophyllum inophyllum supplements?
Individuals with known allergies to tropical plant oils or the Calophyllaceae family should avoid Fue Sina products. Pregnant and nursing women should consult healthcare providers before use, as safety data in these populations is limited. Those taking blood-thinning medications or immunosuppressants should seek medical guidance, as the plant's bioactive compounds may interact with these drug classes.
How do the antioxidant levels in Calophyllum inophyllum leaf extract compare to other herbal sources?
Methanolic leaf extracts of Calophyllum inophyllum yield total phenolic content of 289.1 mg/g, which places it among high-antioxidant plant sources, comparable to recognized antioxidant herbs like oregano and rosemary. This exceptionally high phenolic concentration supports its traditional use in protecting against oxidative stress-related conditions. The bioavailability of these phenolic compounds in supplement form may vary depending on extraction method and formulation.
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