| Popis: |
In this paper, a model to simulate a stationary double-effect evaporator for the concentration of tomato juice was developed. Due to lycopene shows antioxidant capacity, it is desirable its maximum concentration in the tomato paste. This is achieved by optimizing both the design and operating conditions of the juice concentrating unit. To reach this goal, the degradation kinetics of lycopene was incorporated into the model, and a sensitivity analysis was performed to determine the relationships which link together the process variables. The study showed that lycopene content in the product is highly sensitive to the residence time, while the steam consumption is determined by the vapor service pressure and the effect pressures. |
