ABSTRACT
Bioactive constituents potentially extractable from the targeted by-products mainly include phytochemicals, fiber, natural flavor compounds, sugars, polysaccharides, ethanol, and proteins and its derivatives. This chapter shows the extractable biomolecules from some fruits and vegetables, their extraction methods, and yields. The processing of fruits and vegetables results in high levels of waste materials including peels, seeds, stones, and oilseed meals. Innovative technologies explore new aspects regarding the utilization of these wastes as by-products and further exploitation of the manufacturing of high-value products, food additives, or supplements with high nutritional value. The chapter also provides the main functional compounds in tropical exotic fruit by-products with antioxidant potential in the food industry. In conclusion, apples, citrus, grapes, mangoes, and pomegranates are major sources of by-products; their peels, pomaces, and powders could be used in innovations in the food industry and in the pharmaceutical and medical sciences.
