Hermetica Superfood Encyclopedia
The Short Answer
Duku Langsat (Lansium domesticum) is a Southeast Asian fruit whose peels yield onoceranoid triterpenoids—notably Lamesticumin A—demonstrating cytotoxic activity against T47D breast cancer cells (IC₅₀ = 15.68 μg/ml), while its leaves contain lansium acids I–IX with documented antimutagenic properties. The fruit pulp is nutritionally dense, providing vitamin C, B-complex vitamins, dietary fiber, potassium, phosphorus, and polyphenolic antioxidants that collectively support immune function, digestive health, and cardiovascular protection.
CategoryFruit
GroupFruit
Evidence LevelModerate
Primary Keywordduku langsat benefits
Synergy Pairings4
Duku Langsat — botanical close-up
Health Benefits
**Protects against oxidative**
stress and supports cellular health through its rich content of vitamin C and polyphenols.
**Aids digestion and**
promotes gut motility due to its high dietary fiber content.
**Strengthens immune function**
and reduces inflammation via its vitamin C and bioactive compounds.
**Provides sustained energy**: through its natural sugars and carbohydrates
**Promotes skin elasticity**
and protects vision with its antioxidants and vitamin A.
Origin & History
Natural habitat
Duku Langsat (Lansium parasiticum) is a small, round tropical fruit native to Southeast Asia, particularly Indonesia, Malaysia, and the Philippines. It thrives in tropical climates with well-drained, nutrient-rich soils. Celebrated for its refreshing flavor and rich nutritional profile, Duku Langsat has been a staple in Southeast Asian diets and traditional medicine for centuries, valued for its antioxidant and immune-supporting properties.
“Duku Langsat has been cherished in Southeast Asian cultures for centuries, consumed fresh and used in traditional medicine for digestive and immune issues. It is often enjoyed during festivals and regarded as a natural remedy. This fruit holds a significant place in the culinary and healing traditions of the region.”Traditional Medicine
Scientific Research
A comprehensive review by Tan et al. (2022) published in Molecules (PMC9002712) systematically catalogued the phytochemical diversity and pharmacological activities of Lansium domesticum, including cytotoxic, antifungal, antimalarial, and antioxidant properties across fruit, peel, seed, and bark extracts. Research on the fruit peel identified Lamesticumin A, an onoceranoid-type triterpenoid, which exhibited cytotoxic activity against the T47D estrogen/progesterone receptor-positive breast cancer cell line with an IC₅₀ of 15.68 μg/ml and showed chemosensitizing potential when combined with doxorubicin. Studies on leaf-derived lansium acids (I–IX) demonstrated significant antimutagenic activity in Salmonella typhimurium assays. While these in vitro and preclinical findings are promising, no large-scale randomized human clinical trials have yet been published, underscoring the need for translational research.
Preparation & Dosage
Traditional preparation
General
Traditionally consumed fresh or juiced; seeds and rind used in traditional medicine for fever and diarrhea.
General
Modern uses include desserts, fruit salads, beverages, and extracts for skincare products.
Recommended serving size
100–150g of fresh fruit or 1 cup of juice per serving
Nutritional Profile
- Dietary fiber
- Vitamin C, Vitamin A
- Potassium
- Polyphenols, Flavonoids
How It Works
Mechanism of Action
Lamesticumin A, an onoceranoid triterpenoid isolated from Lansium domesticum fruit peels, exerts cytotoxic effects on T47D breast cancer cells—which express both estrogen receptor (ER) and progesterone receptor (PR)—potentially through disruption of cell membrane integrity and induction of apoptotic cascades, and it may function as a chemosensitizer by enhancing doxorubicin cellular uptake via modulation of P-glycoprotein efflux pumps. Lansium acids I–IX, sesquiterpene-derived compounds from the leaves, demonstrate antimutagenic activity likely by scavenging electrophilic mutagens and inhibiting cytochrome P450-mediated bioactivation of promutagens in the Ames test. The fruit's polyphenolic compounds and vitamin C neutralize reactive oxygen species (ROS) through electron donation, reducing oxidative damage to lipids, proteins, and DNA. Additionally, the dietary fiber content promotes short-chain fatty acid (SCFA) production via colonic fermentation, supporting gut barrier integrity and modulating inflammatory cytokine expression.
Clinical Evidence
Current evidence for Duku Langsat is limited entirely to in vitro laboratory studies with no human clinical trials reported. The primary research demonstrates Lamesticumin A's cytotoxic effects on T47D breast cancer cells with IC₅₀ = 15.68 μg/ml, though this does not meet NCI's potent anticancer threshold of <4 μg/ml. Additional laboratory studies show freeze-dried extracts promote Bifidobacteria growth, but quantified clinical metrics are lacking. Rigorous human studies are needed to validate traditional health claims and establish clinical efficacy.
Safety & Interactions
Duku langsat fruit pulp is generally recognized as safe when consumed as part of a normal diet, with no widely documented adverse effects in healthy adults. However, the latex-like sap in the peel and seeds contains compounds that may cause mild gastrointestinal irritation if ingested in large quantities. No formal studies have evaluated CYP450 enzyme interactions, but the chemosensitizing potential of Lamesticumin A suggests theoretical caution when consuming concentrated peel extracts alongside cytotoxic chemotherapy agents such as doxorubicin, as it may alter drug bioavailability. Individuals with known allergies to Meliaceae family plants should exercise caution, and pregnant or breastfeeding women should consult a healthcare provider before using duku langsat-based supplements.
Synergy Stack
Hermetica Formulation Heuristic
Polyphenol/antioxidant base
Gut & Microbiome | Immune & Inflammation
Also Known As
Lansium domesticumDukuLangsatLansium parasiticum
Frequently Asked Questions
What are the main health benefits of duku langsat fruit?
Duku langsat benefits include potent antioxidant protection from vitamin C and polyphenols, improved digestive health from its dietary fiber, immune system support, and potential anti-cancer properties from triterpenoid compounds like Lamesticumin A found in the peel. Its potassium content also supports cardiovascular health by helping regulate blood pressure.
Is duku langsat the same as langsat or lanzones?
Duku, langsat, and lanzones all belong to the species Lansium domesticum but represent different cultivar groups. Duku fruits are typically larger with thicker skin and less latex, while langsat fruits are smaller, thinner-skinned, and contain more sticky sap. Lanzones is the common Filipino name generally referring to the langsat type.
Does duku langsat have anti-cancer properties?
Preliminary in vitro research has identified Lamesticumin A from duku langsat peels as cytotoxic against T47D breast cancer cells with an IC₅₀ of 15.68 μg/ml, and it may enhance doxorubicin uptake in cancer cells. However, these findings are from laboratory studies, and no human clinical trials have confirmed anti-cancer efficacy in vivo.
What nutrients are found in duku langsat?
Duku langsat pulp contains vitamin C, vitamin A, B-complex vitamins (B1, B2, B3), dietary fiber, and essential minerals including potassium, calcium, phosphorus, and iron. Per 100 g of edible fruit, it provides approximately 60–70 kcal primarily from natural sugars, along with meaningful amounts of ascorbic acid for antioxidant defense.
How do you eat duku langsat and what does it taste like?
To eat duku langsat, gently squeeze or peel the thin outer skin to reveal translucent, segmented flesh similar in appearance to garlic cloves. The flavor is sweet and mildly tangy with floral undertones; some segments may contain bitter seeds that should be avoided. The fruit is best consumed fresh and is widely enjoyed across Southeast Asia during its peak season from June to November.
Is duku langsat safe to consume during pregnancy and breastfeeding?
Duku langsat is generally considered safe to consume during pregnancy and breastfeeding due to its natural nutrient profile and traditional use in Southeast Asian cultures. However, pregnant and nursing women should consume it in moderate amounts as part of a balanced diet and consult their healthcare provider if they have specific health concerns. The fruit's high vitamin C and fiber content can support maternal health, but individual dietary needs vary.
Can duku langsat interact with medications or blood thinners?
Duku langsat is unlikely to cause significant interactions with most common medications due to its whole-food nature and low concentration of bioactive compounds. However, individuals taking blood thinners or anticoagulants should maintain consistent vitamin K intake and consult their healthcare provider, as the fruit contains various phytochemicals. It is always prudent to discuss new foods or supplements with a healthcare professional when taking prescription medications.
What is the optimal daily intake of duku langsat for health benefits?
There is no established recommended daily dosage for duku langsat since it is a whole fruit rather than a standardized supplement, but consuming 100–200 grams (3–7 fruits) daily as part of a varied diet can provide meaningful amounts of vitamin C, fiber, and antioxidants. Individual needs vary based on age, health status, and overall dietary intake of other fruits and vegetables. It is best consumed fresh when available and as part of a balanced diet rather than in excessive quantities.
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