Effects of Longan Fruit
Benefits of Longan According to Traditional Eastern Medicine
Dried longan flesh is known as “long nhãn.” It has a reddish-yellow or dark brown color, a wrinkled outer surface, and a shiny interior. When eaten, it tastes sweet, has a light fragrance, and a soft, chewy texture. It does not feel sticky to the touch.
According to Eastern medicine, longan has calming effects, promotes qi (energy) circulation, and nourishes the blood. Additionally, some herbal remedies containing longan improve memory loss, sleep disorders, and physical weakness.
Scientific Benefits of Longan Fruit
Rich in Vitamin C
What are the effects of eating longan? Longan is one of the sources rich in vitamin C. Every 100g of longan flesh contains up to 84 mg of vitamin C. The recommended daily intake is a minimum of 90mg for men and 75mg for women, with a maximum of 2,000mg per day.
With its high vitamin C content, longan offers significant health benefits:
- Enhances skin development and collagen formation, helping to combat aging.
- Improves the immune system and mineral absorption.
- Protects against damage caused by free radicals.
- Strengthens immunity against colds and flu.
- Supports gum and dental health.
- Essential for blood circulation and reduces the risk of cardiovascular diseases.
Contains Antioxidant Polyphenols
Besides preventing cellular damage, studies show polyphenols positively impact cardiovascular health and support fat metabolism. Longan flesh provides a moderate amount of polyphenols, including chlorogenic acid, epicatechin, and quercetin.
However, it is important to note that most polyphenols are found in the seeds and rind of the longan fruit. Research on polyphenols in longan has primarily been conducted on high-stability extracts from the seeds and peel.
Adding longan to a diverse diet provides a certain amount of polyphenols. However, there is no scientific evidence proving that consuming only the flesh of longan will grant all the benefits of polyphenols.
Improves Eye Health
Riboflavin (vitamin B2) in longan helps reduce the risk of eye problems, especially cataracts.
Moreover, longan is also a good source of B-complex vitamins such as thiamin, riboflavin, niacin, and folate, which support the body’s metabolism of carbohydrates, proteins, and fats.
Additional Notable Benefits of Longan Fruit
- Enhances skin beauty through collagen production and anti-aging effects.
- Boosts the immune system and prevents colds.
- Provides antioxidant protection.
- Supports gum and dental health.
- Improves vision.
- Reduces the risk of cardiovascular diseases.