Longan contains protein, fat, carbohydrates, calcium, phosphorus, iron, potassium, vitamin B1, B2, C? B-carotene and niacin. There are also organic acids, adenine and choline and other ingredients. Longan high nutritional value, raw fruits contain high calories (61 kcal / 100 g) and moderate (16%) of carbohydrates, and is a fine source of iron; and dried longan, higher calories (286 kcal / 100 g), containing 5% protein, 2% cellulose, is an excellent source of phosphorus, potassium and vitamin C.
Longan sweet, flat. Flesh is tender, crystal, juicy sweet, with up Heart, benefit blood, spleen appetizers, nourishing the nerves, tonic length wise, attending heart and spleen, qi and blood loss. Direct fresh longan can also be canned, dragon eye ointment, frozen or baked into dried longan longan and so on. Dried longan potassium content is very high, although can promote the body's absorption of calcium, adjust the balance of the body of water and stimulate the renal excretion of toxic substances, but Nephritis and uremic patients may cause disease progression, it is inedible. Potassium is also normal heartbeat and muscle contractions, and sodium balance in the body and control cooperation and help stabilize blood pressure and normal nerve conduction, if less sodium and more potassium in the diet, it is possible to make unstable blood pressure, it may add some dried longan raisins improvement. Chest Yu fire, phlegm and qi stagnation were cut; diabetes, kidney failure and uremia patients should not eat. Special children's acidic, eat longan induce allergic phenomena (end finger showing off dander or itching swelling and other symptoms), indigestion can be removed a few days later. Longan composition containing glucose accounted for about 27%, and a few sugar, is a high-calorie fruits, people with diabetes should not eat.