Delicious, passion fruit is rich source of antioxidants, minerals, vitamins and fiber. 100 g fruit contains about 97 calories. Passion fruit is good in vitamin C, providing about 30 mg per 100 g. Vitamin-C (ascorbic acid) is a powerful water soluble anti-oxidant. Consumption of fruits rich in vitamin C helps the body develop resistance against flu-like infectious agents and scavenge harmful, pro-inflammatory free radicals.The fruit contains very good levels of vitamin-A (provides about 1274 IU per 100 g), and flavonoid antioxidants such as β-carotene and cryptoxanthin-β. Current research studies suggest that these compounds have antioxidant properties, and along with vitamin A are essential for good eye-sight.