Food processing industry by products or food wastes is produced in large amounts in the food processing industries annually around the world. The plant based food processing industries such as fruits and vegetable processing, cereals and pulse processing, nuts and oil seed processing industries etc., mainly produce by products such as bran, husk, pomace, seed, peel, shell, seeds, stems, seed coat during processing. They are dumped as waste or utilized as cattle feed and land filling of these by products cause environment pollution and loss of valuable nutrient components. Food processing industry by products give a promising source of bioactive and functional compounds which may be utilized because of their favorable nutritional and therapeutic properties. Demand for novel functional foods is rising rapidly owing to the increasing health awareness among consumers. The functional foods are used to reduce health risks (Cardiovascular disease, cancer, osteoporosis, obesity, diabetes and metabolic disease, musculoskeletal disease) and improve health quality and health maintenance India is the second major producer of fruits and vegetables in the world. It contributes 10 % of world fruit production. Fruit wastes are rich in antioxidants and phyto-chemicals. Thus fruit processing wastes are useful in serving the functional properties. The aim of the study is to develop a sustaining and functional food products based on the by – products generated from the mango processing industries in Tamil Nadu. This research helps to use better economic utilization of mango processing industries. All these developed functional products have regular and expanding market both in India and foreign countries. This will pave a way to promote entrepreneurship in the area of fruit processing industries.