On the other hand the genus Citrus, which includes several important fruits such as oranges, mandarins, limes, and lemons, is the largest fruit crop in the world (100 million cubic tons per year) and oranges account for 60% reports that orange peel accounts for approximately 45% of the total bulk with significant amounts of it available as a byproduct after orange processing that create environmental problems, particularly water pollution due to the presence of biomaterials such as essential oils, pectin, and sugars.