Sensory and chemical effects of tomato juice acidified with malic and citric acids

Salted and unsalted tomato juice acidified with malic, and citric acids were examined by sensory panel. For salted juice, panelists differentiated nonacidified from citrate acidified juice during the entire storage period. After 180 days of storage, panelists could not distinguish between nonacidified and malate acidified, salted juices. For unsalted juice, panel members could not distinguish between nonacidified juice and malate or citrate acidified juice. Malic acid increased the perception of saltiness in tomato juice. The pH of all juices decreased initially. After storage, the pH of nonacidified juice returned to initial raw juice levels, but the pH of the acidified juices maintained lower values.