# Duku

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/duku
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-15
**Evidence Score:** 6 / 10
**Category:** Fruit
**Also Known As:** Lansium domesticum, Langsat, Duku langsat, Lansium parasiticum

## Overview

Duku (Lansium domesticum) contains bioactive sesquiterpenes including allo-aromadendrene and β-muurolene that demonstrate anticancer properties through cytotoxicity and molecular receptor binding in preclinical studies. The compounds show moderate anticancer activity with IC₅₀ values ranging from 15.68-71.77 µg/mL against breast and cervical cancer cell lines.

## Health Benefits

- **Supports [immune function](/ingredients/condition/immune-support)**: through its antimicrobial, antiviral, and immune-modulating phytocompounds.
- **Enhances [cardiovascular health](/ingredients/condition/heart-health)**: by improving blood flow and neutralizing [oxidative stress](/ingredients/condition/antioxidant).
- **Regulates blood sugar**: levels by improving [insulin sensitivity](/ingredients/condition/weight-management) and metabolic response.
- **Promotes cognitive [longevity](/ingredients/condition/longevity)**: through [neuroprotective](/ingredients/condition/cognitive) antioxidants that combat oxidative degeneration.
- **Supports digestive wellness**: by enriching the [gut microbiome](/ingredients/condition/gut-health) with prebiotic fibers.
- **Facilitates [liver detox](/ingredients/condition/detox)ification**: and overall metabolic balance.
- **Aids in skin**: rejuvenation through its antioxidant and collagen-supporting compounds.

## Mechanism of Action

Allo-aromadendrene exhibits the strongest binding affinity to MCF-7 (3ERT) and HeLa (5DXU) receptors with lowest Gibbs free energy and inhibition constants. The sesquiterpenes induce cytotoxicity and cell death through receptor binding mechanisms, while also providing [antioxidant activity](/ingredients/condition/antioxidant) via DPPH radical scavenging. Lamesticumin A, a terpenoid from fruit peels, demonstrates apoptosis induction similar to sesquiterpene lactones that inhibit [NF-κB](/ingredients/condition/inflammation) pathways.

## Clinical Summary

Evidence for duku is limited exclusively to in vitro cytotoxicity studies with no human clinical trials reported. Bark extract showed IC₅₀ values of 58.65 µg/mL against MCF-7 and 17.54 µg/mL against HeLa cells, while leaf extract demonstrated IC₅₀ values of 71.77 µg/mL and 37.45 µg/mL respectively. Fruit peel compound lamesticumin A exhibited IC₅₀ of 15.68 ± 0.30 µg/mL against T47D breast cancer cells. These potency levels fall below the NCI threshold for highly potent compounds (<4 µg/mL), indicating moderate anticancer activity that requires extensive clinical validation.

## Nutritional Profile

- Natural sugars (fructose, glucose)
- Dietary fiber ([prebiotic](/ingredients/condition/gut-health) compounds)
- Vitamin C
- Potassium, Calcium, Iron, Magnesium, Zinc
- Flavonoids, Polyphenols, Alkaloids, Tannins, Saponins, Plant sterols, Ellagitannins, Catechins, Terpenes

## Dosage & Preparation

- Traditionally consumed fresh, sun-dried for medicinal use, or brewed into healing infusions.
- Used in traditional balms and poultices for [inflammation](/ingredients/condition/inflammation) and skin purification.
- Modern forms include high-[antioxidant](/ingredients/condition/antioxidant) superfruit powders, botanical extracts, and functional blends.
- Recommended dosage: 1–2 servings of fresh fruit daily, 250–500 mg of extract, or 1–2 servings of tea daily.

## Safety & Drug Interactions

No clinical safety data, drug interactions, or contraindications have been established for duku extracts or compounds. Current toxicity data is limited to MTT assays on cancer cell lines without assessment of effects on healthy human cells or tissues. The lack of human studies means potential side effects, contraindications during pregnancy, or interactions with medications remain unknown. Patients should exercise extreme caution and consult healthcare providers before using duku therapeutically given the absence of safety profiles.

## Scientific Research

Research supports Duku's [antioxidant activity](/ingredients/condition/antioxidant), [cardiovascular](/ingredients/condition/heart-health) benefits, and immune enhancement, with studies exploring its metabolic modulation and positive effects on gut microbiota. Its rich phytochemical profile contributes to its holistic value in integrative wellness systems. Further human clinical trials are needed to confirm specific health claims.

## Historical & Cultural Context

Duku has been traditionally honored across Southeast Asia for centuries, particularly in Malay, Javanese, and Thai healing systems. It was celebrated as a nourishing fruit of [longevity](/ingredients/condition/longevity), clarity, and systemic harmony, often used in ritual detox practices and immune-boosting tonics. Duku symbolized vitality and protection within these cultures.

## Synergistic Combinations

Role: Polyphenol/[antioxidant](/ingredients/condition/antioxidant) base
Intention: Gut & [Microbiome](/ingredients/condition/gut-health) | Immune & [Inflammation](/ingredients/condition/inflammation)
Primary Pairings: - Mangosteen
- Camu Camu
- Turmeric (Curcuma longa)

## Frequently Asked Questions

### What are the main bioactive compounds in duku fruit?

The primary bioactive compounds include allo-aromadendrene and β-muurolene (sesquiterpenes) from leaves and bark, plus lamesticumin A (terpenoid) from fruit peels. Allo-aromadendrene shows the strongest molecular binding affinity to cancer cell receptors in preclinical studies.

### Is duku effective against cancer based on research?

In vitro studies show moderate anticancer activity with IC₅₀ values of 15.68-71.77 µg/mL against breast and cervical cancer cells. However, no human clinical trials exist, and the potency falls below established thresholds for highly active anticancer compounds.

### What parts of the duku plant are used medicinally?

Research focuses on leaves, bark, fruit peels, and seeds rather than the edible fruit pulp. Bark and leaf extracts contain sesquiterpenes while fruit peels provide terpenoid compounds like lamesticumin A with demonstrated bioactivity.

### Are there any safety concerns with duku supplements?

No human safety data exists for duku extracts or isolated compounds. Clinical toxicity profiles, drug interactions, and contraindications remain unknown, making therapeutic use potentially risky without medical supervision.

### How does duku compare to established cancer treatments?

Duku compounds show only moderate potency compared to established anticancer agents and lack clinical validation. Current evidence is limited to laboratory cell studies without proven efficacy or safety in human cancer patients.

### Can duku fruit help regulate blood sugar levels in people with diabetes or prediabetes?

Duku fruit contains phytocompounds that improve insulin sensitivity and enhance metabolic response, making it potentially beneficial for blood sugar regulation. Research suggests that the fruit's antioxidants and fiber content help reduce postprandial glucose spikes and support overall glycemic control. However, individuals taking diabetes medications should consult a healthcare provider before adding duku supplements, as they may potentiate insulin effects.

### Which populations would benefit most from taking duku supplements for cognitive health?

Duku supplements may be most beneficial for aging adults concerned with cognitive decline and those at risk for neurodegenerative diseases, as the fruit's neuroprotective antioxidants combat oxidative stress in the brain. Individuals with high mental fatigue or chronic oxidative stress from environmental exposure may also see cognitive longevity benefits. Those already consuming high-antioxidant diets may experience less dramatic improvements compared to individuals with lower baseline antioxidant intake.

### What is the relationship between duku's antimicrobial properties and cardiovascular health?

Duku's antimicrobial and antiviral phytocompounds support cardiovascular health by reducing pathogenic microbial burden that can trigger chronic inflammation and atherosclerosis development. The fruit simultaneously improves blood flow through vasodilation mechanisms while its antioxidants neutralize oxidative stress—a key driver of endothelial dysfunction and plaque formation. This dual mechanism makes duku particularly valuable for individuals with inflammatory markers or compromised circulation.

## References

Research links: https://www.ncbi.nlm.nih.gov/search/all/?term=Duku; https://fdc.nal.usda.gov/fdc-app.html#/search?query=Duku | Studies: https://pubmed.ncbi.nlm.nih.gov/?term=Duku
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3978312/; https://pubmed.ncbi.nlm.nih.gov/27668675/
Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7892045/; https://www.sciencedirect.com/science/article/pii/S2213453020301845; https://pubmed.ncbi.nlm.nih.gov/34789165

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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