Vitamin C

The high vitamin C content in a serving of ugli fruit is another health benefit. A serving of ugli fruit contains 70 percent of the 75 to 90 milligrams of vitamin C you need each day. Vitamin C helps keep your immune system strong and acts an antioxidant to destroy free radicals, harmful substances that cause inflammation and tissue damage throughout your body. Over time, this damage can lead to chronic health problems such as cancer. Vitamin C is also essential for the formation of collagen, the connective tissue in your gums, muscles, skin and tissues. Collagen is also necessary for wound healing.