Three types of beverages were formulated:
the first formulation consisted only of peel and pulp
purees, while in the second one, fumaric, citric and tartaric
acids were added at concentrations of 017, 04 and
05% (w/v), respectively, to achieve pH values of 422 for
the Villanueva and 446 for the Rojo Vigor varieties; for
the third formulation (in addition to acids), sodium benzoate
(300 ppm) and potassium sorbate (100 ppm) were
incorporated (Jimenez-Aguilar et al. 2015). Average water
activity and soluble solids of beverages were
0988 0003 and 129 08 °Brix respectively. Beverages
were stored at 4°C and processed within 2 h after
preparation.