Dimocarpus longan, commonly known as longan, is a tropical fruit tree native to Southeast Asia. It belongs to the same family as lychee (Litchi chinensis), Sapindaceae. The longan fruit is small, round, and has a thin, light brown shell. Inside, it contains translucent, juicy flesh with a sweet and mildly floral taste, surrounding a single dark seed.
Key Information:
Scientific Name: Dimocarpus longan
Common Names: Longan, Dragon’s Eye
Family: Sapindaceae (Soapberry family)
Native Range: Southern China, Taiwan, India, Thailand, Vietnam, and other parts of Southeast Asia
Growing Conditions:
Climate: Prefers warm, subtropical to tropical climates (USDA zones 10–12)
Soil: Well-drained, slightly acidic to neutral soil
Sunlight: Full sun for optimal fruit production
Watering: Regular watering, but avoid waterlogging
Uses:
Culinary: Eaten fresh, dried, or used in desserts, soups, and teas.
Medicinal: Traditionally used in Chinese medicine for its purported benefits in improving sleep, reducing stress, and enhancing immunity.
Ornamental: The tree is also grown for shade and landscaping.
Longan (Dimocarpus longan) is a highly nutritious fruit packed with vitamins, minerals, and antioxidants. Here are its key nutritional benefits:
1. Rich in Vitamin C
A great source of vitamin C, which boosts the immune system, promotes collagen production for healthy skin, and helps with iron absorption.
Just 100g of longan provides about 84mg of vitamin C (~140% of the daily recommended intake).
2. High in Antioxidants
Contains polyphenols, flavonoids, and vitamin C, which help combat oxidative stress, reduce inflammation, and support heart health.
3. Supports Brain and Nervous System Health
Contains B vitamins (B1, B2, B3, and B6), which help with brain function, mood regulation, and nerve health.
Traditionally used in Chinese medicine to help reduce stress, anxiety, and insomnia.
4. Good for Skin and Anti-Aging
The high vitamin C content promotes collagen production, helping to keep the skin firm and youthful.
Antioxidants help fight premature aging by reducing damage caused by free radicals.
5. Boosts Energy and Reduces Fatigue
Contains complex carbohydrates, which provide a steady source of energy.
Rich in iron, which helps prevent anemia and fatigue by supporting red blood cell production.
6. Supports Heart Health
Contains potassium, which helps regulate blood pressure and maintain cardiovascular function.
Flavonoids and antioxidants contribute to reducing cholesterol and improving blood circulation.
7. Aids Digestion
Longan contains dietary fiber, which supports digestion and prevents constipation.
Traditionally used in herbal medicine to strengthen the spleen and stomach.
