Grapes

Grapes and their juice are a source of resveratrol, a polyphenol antioxidant that is thought to be one of the health-promoting elements in red wine. Resveratrol appears to be involved in reducing the risk or slowing the development of cancer, heart disease, degenerative nerve disease, viral infections, and Alzheimer’s disease.
It also shows potential in treating bronchial asthma and helping to prevent type 2 diabetes. Resveratrol is most highly concentrated in the skin of grapes.
Grapes also contain antioxidant anthocyanins and catechins, and some varieties also provide ellagic acid, myricetin, quercetin, kaempferol, and other phytochemicals and phenolics. They are a moderately good source of vitamin C and potassium, and they contain small amounts of a wide variety of minerals.
Nutritional Facts :
One cup of raw grapes provides 58 calories, 15.8 g carbohydrate, 0.6 g protein, 0.3 g fat, 0.9 g dietary fiber, 92 IU vitamin A, 4 mg vitamin C, 4 mcg folic acid, 2 mg sodium, 176 mg potassium, 13 mg calcium, 9 mg phosphorus, and 5 mg magnesium.