Pineapple contains 94% carbohydrates, 4% protein and 2% fats. It is rich in dietary fibers, amino acids, omega-3 and omega-6 fatty acids, vitamins and minerals. One cup, or 165 grams, of pineapple chunks contains roughly 83 calories, according to The World's Healthiest Foods Rating.
Pineapple is an excellent source of vitamin C and manganese and a very good source of copper. Its nutritional value contributes to good digestion, anti-oxidant protection, immune support, energy production and even protection against age-related macular degeneration or ARMD. World's Healthiest Foods explains that ARMD is the leading cause of vision loss in aging adults.
According to the Journal of Agricultural and Food Chemistry, the nutritional content of a pineapple is preserved within 6 to 9 days even after cutting, packaging and chilling. The same is true for kiwifruit, watermelon, cantaloupe, mango and strawberry.