Classification
Product TypeRaw Material
Product FormFresh
Industry PositionPrimary Agricultural Product
Raw Material
Commodity GroupTropical fruit (Meliaceae)
Scientific NameLansium domesticum Corrêa
PerishabilityHigh
Growing Conditions- Wet tropical lowland conditions; species is associated with wet tropical biomes in its native range
- Altitude limitation reported in reference literature (cannot be grown above ~650–750 m in some sources)
Main VarietiesLangsat, Duku, Longkong / Dokong
Consumption Forms- Fresh consumption after peeling
- Candied or preserved in syrup (reported in review literature)
Grading Factors- Skin browning/blackening and external appearance (major driver of downgrade)
- Absence of spoilage and microbial decay during storage/transport
- Phytosanitary freedom from quarantine pests (notably fruit flies)
- Internal eating quality indicators used in studies (e.g., TSS and titratable acidity trends during storage)
Market
Fresh langsat (Lansium domesticum, also traded under names such as duku/longkong in parts of Southeast Asia) is a niche tropical fruit with production centered in the Malesia–Peninsular Thailand region and nearby Southeast Asian markets. Major production is associated with Indonesia, Thailand, Malaysia, and the Philippines, where the fruit is widely consumed domestically and seasonality is pronounced by origin. In global trade, product-specific flows are difficult to isolate because shipments may be recorded under broader customs headings for “other fresh fruit” (HS 0810), rather than a dedicated product line. For international buyers, the key commercial constraints are rapid postharvest browning/short shelf life and phytosanitary market-access controls typical of fruit-fly host commodities.
Market GrowthNot Mentioned
Major Producing Countries- 인도네시아Widely cultivated in Southeast Asia; Indonesia is cited in review literature as a major production country for Lansium domesticum.
- 태국Major regional production and seasonal supply; Thai market commonly uses the name longkong for Lansium domesticum.
- 말레이시아Part of the native/cultivation center for Lansium domesticum; commonly cultivated and consumed domestically.
- 필리핀Major regional production and domestic consumption; locally known as lanzones.
Supply Calendar- Thailand:Aug, SepHarvest season commonly reported around August–September in Thailand in review literature.
- Malaysia (Peninsular Malaya):Jun, Jul, Dec, Jan, FebSome literature reports two fruiting periods (mid-year and year-end into early year), varying by area.
- Indonesia:Jan, Feb, Mar, AprFruiting availability is reported as aligned with rainy-season timing in some producing areas.
Specification
Major VarietiesLangsat (often associated with L. domesticum var. pubescens in some references), Duku (often referenced as L. domesticum var. domesticum), Longkong / Dokong (trade name used in parts of Thailand for L. domesticum types)
Physical Attributes- Fruits grow in clusters; typically small, round (~3–5 cm) with yellow to yellow-brown skin that may be thin or thick depending on variety
- Translucent, juicy segmented flesh (commonly 5–6 segments) with seeds that can be notably bitter
- Postharvest skin browning is a frequent quality defect driving rapid loss of visual appeal
Compositional Metrics- Total soluble solids (TSS) and titratable acidity are commonly tracked in postharvest quality studies during storage
Packaging- Polyethylene (PE) plastic packaging has been studied to slow browning and extend storage life under moderate-temperature storage conditions
- Tray-plus-film retail-style packs (e.g., polypropylene tray with film wrap) and inclusion of absorbent materials/ethylene absorbers have been used in postharvest trials
Supply Chain
Value Chain- Harvest (often in tight seasonal windows) -> sorting to remove damaged/browned fruit -> sanitation/cleaning treatments (as used in postharvest trials) -> protective packaging (film/PE; sometimes with absorbent/ethylene management in trials) -> temperature-managed holding and distribution
Demand Drivers- Regional consumer familiarity and seasonal consumption in Southeast Asia; limited but existing niche demand in specialty/exotic fruit channels where available
Temperature- Temperature sensitivity typical of many tropical fruits: exposure to overly low temperatures can be problematic; multiple postharvest studies for Lansium domesticum types use moderate chilled storage around 15°C rather than near-0°C cold chains
- Cold-chain decisions are often constrained by the need to slow browning/spoilage while avoiding temperature-related quality damage
Atmosphere Control- Modified-atmosphere-like packaging approaches (e.g., flexible plastic bag systems) have been evaluated to slow skin browning and extend marketable life
Shelf Life- Reported ambient shelf life can be very short (on the order of a few days) due to rapid skin browning and subsequent deterioration in some postharvest studies
- Shelf-life extension to roughly ~12–14 days at ~15°C has been reported in studies using PE packaging and antioxidant (ascorbic acid) treatments; other sanitation/packaging interventions in trials can delay visible spoilage for around ~12 days at ~15°C
Risks
Phytosanitary Access HighFresh langsat/duku/longkong is a recognized host commodity for regulated fruit flies in key producing regions (e.g., Bactrocera dorsalis and Bactrocera carambolae are listed in host/pest references for Lansium domesticum). Because fruit flies trigger quarantine restrictions and treatment requirements, market access can be constrained or interrupted, making phytosanitary compliance the most critical trade-disruption risk for fresh exports.Align export programs with importing-country fruit-fly protocols (e.g., approved treatments, pest-free area/system approaches), implement orchard-to-packhouse monitoring and sanitation, and maintain traceability to support phytosanitary certification.
Shelf Life Limitation MediumLangsat/duku can be highly perishable, with rapid skin browning that reduces visual quality and accelerates market rejection; shelf life at ambient conditions is reported as only a few days in some studies.Use rapid postharvest sorting, gentle handling, and validated packaging/antibrowning interventions (e.g., PE packaging and antioxidant dips where permitted) under appropriate storage temperatures.
Temperature Sensitivity MediumAs a tropical fruit, storage is constrained by both deterioration at warm temperatures and sensitivity to overly low temperatures; multiple studies use moderate cold storage (around 15°C) rather than very cold conditions.Define commodity-specific temperature set points and avoid exposing fruit to temperatures that increase chilling/quality damage risk while still slowing browning and microbial growth.
Sustainability- Food loss and waste risk due to rapid postharvest browning/short shelf life, increasing downgrade and discard rates if handling is suboptimal
- Packaging trade-off: shelf-life extension strategies frequently rely on plastics (films/PE packaging), raising packaging-waste considerations versus reduced product loss
FAQ
Why is fresh langsat challenging to ship long distances as a fresh fruit?Fresh langsat (including duku/longkong types) can lose marketability quickly because the skin browns and the fruit is highly perishable; some studies report only a few days of shelf life at ambient conditions. Research shows shelf life can be extended under moderate-temperature storage (around 15°C) using interventions such as PE packaging and antibrowning treatments, but this adds handling complexity and cost.
What is the biggest trade risk for exporting fresh langsat?Phytosanitary market access is the most critical risk because Lansium domesticum is listed as a host for regulated fruit flies such as Bactrocera dorsalis and Bactrocera carambolae. Importing countries often require specific fruit-fly risk controls (treatments, pest-free systems, certification), and noncompliance can block or delay shipments.
Are langsat, duku, and longkong different products?They are closely related and commonly treated as types within the Lansium domesticum complex in trade and consumer markets, with names varying by country. Some references distinguish langsat and duku as different botanical varieties within L. domesticum, and “longkong/dokong” is a common trade name used in parts of Thailand for Lansium domesticum fruit types.