# Longkong

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

## Overview

Longkong fruit peels contain lamesticumin A, which exhibits cytotoxic activity against T47D breast cancer cells, likely by inhibiting [NF-κB](/ingredients/condition/inflammation) and inducing apoptosis. Its antifungal properties are attributed to enzymes like chitinase, while its broader health benefits are supported by a rich profile of [antioxidant](/ingredients/condition/antioxidant)s.

## Health Benefits

- Enhances immune function by stimulating [white blood cell](/ingredients/condition/immune-support) activity and modulating [inflammation](/ingredients/condition/inflammation).
- Supports [cardiovascular health](/ingredients/condition/heart-health) by improving circulation and reducing [oxidative stress](/ingredients/condition/antioxidant).
- Regulates blood sugar through improved [insulin sensitivity](/ingredients/condition/weight-management) and glucose stabilization.
- Promotes [digestive health](/ingredients/condition/gut-health) via prebiotic fiber, nourishing beneficial gut bacteria.
- Provides [neuroprotective effect](/ingredients/condition/cognitive)s by reducing cognitive decline and oxidative damage.
- Contributes to metabolic regulation and detoxification processes.

## Mechanism of Action

Longkong peel extracts contain lamesticumin A, a terpenoid-like compound, which demonstrates cytotoxic activity against T47D breast cancer cells with an IC50 of 15.68 ± 0.30 µg/mL, likely by inhibiting NF-κB, inducing apoptosis, and regulating transcription factors. Enzymes such as chitinase and β-1,3-glucanase contribute to its antifungal properties. Additionally, its antioxidant capacity, provided by compounds like GPX, SOD, and CAT, helps reduce [oxidative stress](/ingredients/condition/antioxidant) and modulate [inflammation](/ingredients/condition/inflammation).

## Clinical Summary

Preclinical and in vitro studies on Longkong peel extracts show promising cytotoxic effects against cancer cells (e.g., T47D breast cancer cells via lamesticumin A) and antifungal properties. Broader emerging research, primarily based on in vitro and animal studies, suggests benefits in [immune modulation](/ingredients/condition/immune-support), [cardiovascular health](/ingredients/condition/heart-health), blood sugar regulation, and neuroprotection, often attributed to its polyphenol content and [antioxidant](/ingredients/condition/antioxidant) enzymes. However, human clinical trials are currently limited, necessitating further targeted research to confirm efficacy and safety in vivo.

## Nutritional Profile

- Dietary Fiber: Prebiotic fiber for [digestive health](/ingredients/condition/gut-health) and gut microbiota nourishment.
- Vitamins A, C, E: Support immune defense, neurological health, and cellular repair.
- Calcium: Essential for nerve function and [bone health](/ingredients/condition/bone-health).
- Phosphorus: Supports bone health and [energy metabolism](/ingredients/condition/energy).
- Potassium: Enhances nerve function and electrolyte stability.
- Polyphenols & Flavonoids: Reduce oxidative damage and support [cardiovascular](/ingredients/condition/heart-health) function.
- Tannins & Alkaloids: Offer gut-supportive, [antimicrobial](/ingredients/condition/immune-support), and [anti-inflammatory](/ingredients/condition/inflammation) actions.
- Carotenoids & Xanthones: Promote skin hydration, [collagen synthesis](/ingredients/condition/skin-health), and immune balance.
- Plant Sterols & Glycosides: Improve metabolic efficiency and modulate inflammation.

## Dosage & Preparation

- Traditionally consumed fresh, brewed into herbal infusions, or used in remedies for fever, [inflammation](/ingredients/condition/inflammation), and digestive complaints.
- Modern forms include [antioxidant](/ingredients/condition/antioxidant)-rich powders, [nootropic](/ingredients/condition/cognitive) formulations, and metabolic-enhancing supplements.
- Recommended dosage: 1–2 servings daily for optimized [immunity](/ingredients/condition/immune-support), cognitive vitality, and circulatory support.

## Safety & Drug Interactions

As a commonly consumed tropical fruit, Longkong is generally considered safe. However, research highlights bioactive compounds concentrated in the peels, such as lamesticumin A, which demonstrate cytotoxic activity in vitro; the effects of concentrated peel extracts on human health are not fully established. While direct adverse effects from typical fruit consumption are rare, individuals with specific health conditions or those considering concentrated peel extracts should exercise caution. There are no known significant drug interactions or contraindications reported for typical fruit consumption, but pregnant or breastfeeding individuals should consult a healthcare professional before using concentrated extracts.

## Scientific Research

Emerging research highlights Longkong's polyphenol-driven [immune modulation](/ingredients/condition/immune-support), cardioprotective action, and positive influence on gut microbiota balance. Studies suggest its potential in regulating blood sugar and providing [neuroprotective effect](/ingredients/condition/cognitive)s. While promising, further targeted human clinical trials are needed to substantiate these preliminary findings.

## Historical & Cultural Context

Longkong has been regarded as a sacred rejuvenating fruit in traditional Southeast Asian medicine for centuries. Historically, it was consumed to fortify the body, ease [digestion](/ingredients/condition/gut-health), and restore balance, playing a significant role in local healing practices and culinary traditions.

## Synergistic Combinations

Role: Polyphenol/[antioxidant](/ingredients/condition/antioxidant) base
Intention: Cardio & Circulation | Gut & [Microbiome](/ingredients/condition/gut-health)
Primary Pairings: - Mangosteen
- Turmeric (Curcuma longa)
- Goji Berry (Lycium barbarum)
- Camu Camu

## Frequently Asked Questions

### What are the primary health benefits of Longkong?

Longkong is recognized for enhancing immune function by stimulating white blood cell activity and modulating inflammation. It also supports cardiovascular health, helps regulate blood sugar through improved insulin sensitivity, and promotes digestive health.

### What are the key bioactive compounds found in Longkong?

The peels of Longkong are rich in several bioactive compounds, including lamesticumin A (a terpenoid-like compound), lansioside A and B (onoceranoid triterpenoids), and lansium acid. It also contains various enzymes like chitinase and antioxidants such as GPX, SOD, and CAT.

### Does Longkong have anti-cancer properties?

Emerging research shows that lamesticumin A, isolated from Longkong peel extracts, exhibits cytotoxic activity against T47D breast cancer cells in vitro. This activity suggests potential anti-cancer mechanisms, possibly involving NF-κB inhibition and apoptosis induction.

### Is there human clinical evidence for Longkong's benefits?

While preclinical and in vitro studies show promising results regarding immune modulation, cardioprotection, blood sugar regulation, and neuroprotective effects, current human clinical trials are limited. Further targeted research is needed to validate these benefits in human subjects.

### What is the origin of Longkong fruit?

Longkong (Lansium domesticum or Lansium parasiticum) is a tropical fruit tree native to Southeast Asia. It is particularly prevalent and valued in countries like Thailand, Malaysia, and Indonesia for its edible flesh and medicinal properties of its peels.

### Is Longkong safe to consume during pregnancy and breastfeeding?

Longkong is generally considered safe as a whole fruit during pregnancy and breastfeeding when consumed in normal dietary amounts, as it is a traditional food in Southeast Asian cultures with no known toxins. However, concentrated supplements derived from Longkong should be discussed with a healthcare provider before use during pregnancy or lactation to ensure safety for both mother and child. The fruit's natural fiber content and nutrient profile are beneficial for pregnant women, but individual medical history should always be considered.

### Can Longkong interact with blood sugar or blood pressure medications?

Longkong's ability to improve insulin sensitivity and regulate blood glucose means it may have additive effects when combined with diabetic medications, potentially requiring dose adjustments under medical supervision. Similarly, its cardiovascular benefits and circulation-improving properties could potentiate blood pressure medications, increasing the risk of hypotension. Individuals taking antidiabetic or antihypertensive drugs should consult their healthcare provider before significantly increasing Longkong consumption or taking concentrated supplements.

### What is the most effective form of Longkong for supplementation—fresh fruit versus extract?

Fresh Longkong fruit provides the complete synergistic combination of fiber, polyphenols, and other bioactive compounds in their natural matrix, making it optimal for digestive and prebiotic benefits. Standardized extracts or powders may offer higher concentrations of specific bioactive compounds like flavonoids, but they lack the insoluble fiber that supports gut health and may have reduced bioavailability compared to whole fruit consumption. For maximum benefit, consuming fresh Longkong fruit is generally preferred, though extracts may be useful for targeted immune or antioxidant support when whole fruit is unavailable.

## References

Research links: https://www.ncbi.nlm.nih.gov/search/all/?term=Longkong; https://fdc.nal.usda.gov/fdc-app.html#/search?query=Longkong | Studies: https://pubmed.ncbi.nlm.nih.gov/?term=Longkong

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