Like green and red grapes, the majority of the calories in black grapes come from carbohydrates. You can eat black grapes raw or use them to make jams or wine. Values listed are for 1 1/2 cups California black seedless grapes. Values, especially the fiber content, may vary if the skin is removed.
Calories and Fiber
A 1 1/2 cup serving of black grapes contains 90 calories, nearly all of which come from carbohydrates. One serving of black grapes contains 24 g of carbohydrates, which provides 8 percent of the daily value (DV), based on a 2,000-calorie diet. Of the 24 g of carbohydrates in one cup of black grapes, only 1 g is fiber, which provides 4 percent of the DV. An additional 23 g of the carbohydrates in black grapes are sugar, primarily glucose and fructose.
Fat and Protein
Black grapes contain only 1 g of fat and no protein. To create a snack with more protein, eat grapes with either 1 cup of nonfat Greek yogurt, which contains about 20 g of protein, no fat and 140 calories or 1 oz. of gouda cheese, which contains 7 g of protein, 8 g of fat and 100 calories.
Vitamins and Minerals
Black grapes contain numerous vitamins and minerals . One serving of grapes provides 25 percent of the DV of vitamin C, which promotes collagen production and assists in the formation of some brain chemicals. Your body does not produce vitamin C so you must get all you need through your diet. Black grapes also supply 2 percent of the DV of calcium, iron and vitamin A.
Antioxidants
Black grapes also contain lutein and zeaxanthin, which are pigments called carotenoids that occur naturally in many plants. Lutein and zeaxanthin are antioxidants that specifically protect the cells of the eye from oxidative damage. According to the American Optometric Association, lutein and zeaxanthin can help reduce your risk of cataracts and macular degeneration. Other foods high in lutein and zeaxanthin include leafy greens, corn and egg yolks.
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