Zucchini provides vitamins A and C, folate, potassium, manganese, lutein, and beta-carotene. Although it is 95 percent water and 4 percent carbohydrate, zucchini is a low-calorie source of antioxidants and anti-inflammatories, as well as some of the phytonutrients that help protect vision.
The manganese in zucchini (one cup provides 38 percent of the recommended daily value of this mineral) is a vital cofactor in a number of enzymes, including some that help cells maintain their shape and others that are essential to metabolic Carbohydrates: “True” Vegetables 161 processes. Manganese ions are essential to the process of neutralizing superoxide free radicals, which are quite toxic.Nutritional Facts
One cup of sliced raw zucchini provides 18 calories, 3.8 g carbohydrate, 1.6 g protein, 0.2 g fat, 1.6 g dietary fiber, 442 IU vitamin A, 12 mg vitamin C, 28 mcg folic acid, 322 mg potassium, 4 mg sodium, 42 mg phosphorus, 20 mg calcium, and 28 mg magnesium.