The fruiting period of longan is in summer, it is this time to market in large quantities, mainly planted in the southeast and southwest of China, Guangdong and Fujian production is the majority, this is because the longan is a subtropical fruit tree, like a high temperature environment, the temperature can affect the growth rate of the longan tree and the amount of fruits, so the longan tree is generally to be cultivated in the place where the average temperature is more than 20 degrees Celsius.

The longan is rich in nutrients, longan is a relatively high sugar content of the fruit, 100 grams of longan in the following nutrients: 81.4 grams of water, 16.6 grams of carbohydrates, 1.2 grams of protein, 0.4 grams of dietary fiber, 0.1 grams of fat, 0.7 grams of ash, 20 milligrams of carotenoids, Vitamin A: 3 milligrams of vitamin A, thiamine 0.01 micrograms. Riboflavin 0.14 mg, Niacin 1.3 mg, Vitamin C: 43 mg, Potassium 248 mg, Phosphorus 30 mg, Magnesium 10 mg, Calcium 6 mg, Sodium 3.9 mg, Zinc 0.4 mg, Iron 0.2 mg, Copper 0.1 mg, Manganese 0.07 mg, Selenium 0.83 mcg, and Calories 71 kcal.

Longan contains a variety of amino acids, 100 grams of longan each amino acid composition is as follows: glutamic acid 178 mg, aspartic acid 156 mg, alanine 107 mg, threonine 98 mg, arginine 58 mg, proline 58 mg, serine 50 mg, valine 47 mg, leucine 45 mg, lysine 37 mg, glycine 34 mg, histidine 31 mg, tyrosine 28 mg, isoleucine 26 mg, phenylalanine 22 mg, methionine 12 mg, tryptophan 11 mg.

The efficacy and role of longan

1, tonic blood gas

In Chinese medicine, longan taste sweet and warm, to the heart, spleen, longan is rich in glucose and iron, and these nutrients are easy to be digested and absorbed by the human body, and iron can promote the synthesis of the body's hemoglobin, can alleviate the symptoms of iron-deficiency anemia, and to improve the symptoms of yellowish face. Therefore, the consumption of longan can replenish blood and qi.

2, heart and wisdom

In Chinese medicine, longan has the effect of tonifying the heart and spleen, longan is rich in potassium, iron and other elements, so it is good for the heart. The "famous doctors," said longan for the "wisdom", "Shennong Ben Cao Jing" in the records on longan is: "long service strong soul smart, light body not old, through the gods," so eating longan has the heart of the wisdom of the efficacy.

3, nourishing the body

Longan is very rich in nutrients, known as the "fruit of the gods", Li Shizhen in the "Compendium of Materia Medica" is also recorded: "food to lychee is expensive, and the capital benefit is longan as good", referring to longan is a valuable nourishing body food.

4, beauty

Longan contains a natural substance similar to collagen, the human body after the intake of this substance can be quickly absorbed by the skin cells and use, and this substance is absorbed by the skin cells can increase the elasticity of the skin, play the role of anti-aging.

Longan is also rich in vitamins, such as vitamin C has the effect of antioxidant, can remove the free radicals in the body, play the role of anti-aging.

Longan also contains iron, iron can promote hemoglobin synthesis, can make the face red. So eating longan has the effect of beauty.