In its raw form, 1 ounce of papaya contains 11 calories. A serving is equal to approximately 5 ounces of fruit. A typical papaya weighs about 1 pound and makes about three servings.
One serving of papaya provides more than the U.S. Food and Drug Administration's recommended daily allowance of vitamin C, and significant amounts of vitamin A, folate, potassium and magnesium. It's also a source of papain, an enzyme that aids in the digestion of meat protein. The flesh of the papaya is sweet and slightly musky, with a buttery texture. The black seeds are also edible and have a bitter and peppery flavor.