Orange (fruit) orange juice between the São Paulo and mid-south Florida areas makes up roughly 85% of the world market. Brazil exports 99% of its production, while 90% of Florida's production is consumed in the United States. Orange juice is traded internationally in the form of frozen, concentrated orange juice to reduce the volume used so that storage and transportation costs are lower. Oranges, whose flavor may vary from sweet to sour, are commonly peeled and eaten fresh or squeezed for juice. The thick bitter rind is usually discarded, but can be processed into animal feed by desiccation, using pressure and heat.
Orange juice heat treated there is an increase in the number of fine particles and decrease in that of coarse particles. The fine particles in particular are responsible for the appearance, color, and flavor of orange juice. Heat treatment plays a vital role on pulp volume, cloud stability, serum turbidity, and serum viscosity. Heat treatment stabilizes the cloud through enzyme inactivation and enhances the turbidity of a stable cloud formation. The increase in serum viscosity is due to the extraction of pectic substances into the serum. Based on Stoke's law, the increase in serum viscosity is the cause for the enhanced cloud