The apple juice of the Fuji variety went through a sensorial evaluation in which it was processed together with rice hull that served as a pressing aid. The triturated pulp was pressed under a working pressure of 150 and 200kgf/cm² and rice hull was added in a concentration of 0; 1; 3 and 5%. A group of trained testers submitted the product of the process to sensory and yield evaluations. The highest concentration of rice hull provided higher increase in the yield of the apple juice extraction, higher than the average of the witnesses. Using a working pressure of 150kgf/cm² the yield obtained with the witness was of 59.91% while the 5% rice hull concentration obtained yield of 76.09%, for an applied pressure of 200kgf/cm² the witness presented average of 66.52% and the concentration of 5% of rice hull obtained the higher yield of extraction, an average of 73.19%. Through the sensorial evaluation significant differences can be observed between the witnesses and treatments, especially when color, odor, and flavor are considered. The general quality of pure juice was considered to have a higher quality than those obtained through treatments with the rice hull pressing aid. It indicates that this treatment has a negative influence on the final quality of the product.
apple; juice; extraction; pressing; sensorial analysis; pressing aid
