Evaluation of physicochemical and sensory properties of PET containers packed lemon juice

In this study، physicochemical (pH، acidity، brix، vitamin C، SO2 and formalin number) and sensory properties of PET containers packed Lemon juice were evaluated. The samples were stored at 20 and 40 ◦C. During the ten weeks of preservation، physicochemical and sensory properties were measured in three replicates every two weeks. The results showed that the two storage temperatures (20 and 40 ◦C) had not any significant effect on pH، acidity، brix and formalin number (p≥0. 05). The amount of vitamin C and SO2 were less in the 40◦C stored samples compare with the 20◦C stored samples. The results of sensory evaluation indicate that the PET containers packed samples are acceptable in both storage temperatures (20 and 40 ◦C) during the ten weeks of storage.