Ordinary grapefruit contains sugar, vitamin B1, vitamin B2, vitamin C, vitamin P, carotene, potassium, phosphorus, citric acid and so on. The main components of pomelo skin are naringin, neohesperidin, etc. Pomelo kernel contains fat oil, phellodendron, phellodendron lactone. Pomelo is rich in nutrients, per 100 grams of edible portion, containing 84.8 grams of water, 0.7 grams of protein, 0.6 grams of fat, 12.2 grams of carbohydrates, calories 57 kcal, 0.8 grams of crude fiber, calcium 41 milligrams, 43 milligrams of phosphorus, 0.9 milligrams of iron, 0.12 milligrams of carotenoids, sulphatidic acid 0.07 milligrams of riboflavin 0.02 milligrams of niacin 0.5 milligrams of ascorbic acid. 41 mg. This is from Baidu encyclopedia.

Additionally red heart grapefruit meat red, because it contains phytochrome, phytochrome is usually plant active ingredients, although not involved in the final synthesis of human nutrients, but can give the body a very large promotion and antioxidant protection, such as flavonoids pigments most of the function of vitamin P, carotenoids in the beta-carotene and lycopene can also antioxidant that help scavenge free radicals from the body.

But we have to pay attention to moderate consumption, because too much will damage the gastric mucosa, causing digestive fluid secretion disorders, and will hurt the spleen.