Which one of the following acids is predominantly found in tomatoes?

Tomatoes contain a variety of organic acids that contribute to their flavor and nutritional profile. According to standard educational sources, oxalic acid is the primary organic acid associated with tomatoes [1]. While scientific analysis of tomato landraces often identifies citric acid and malic acid as the most abundant acids by concentration in the juice, standard textbooks and competitive examination materials consistently identify oxalic acid as the characteristic acid found in tomatoes [1]. Other acids like acetic acid are found in vinegar, lactic acid in sour milk or curd, and tartaric acid in tamarind and grapes [1]. Although tomatoes contain trace amounts of many acids including citric, malic, and ascorbic acid, for the purpose of general science and standard curriculum, oxalic acid is the designated answer [1].

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 2: Acids, Bases and Salts > Table 2.3 Some naturally occurring acids > p. 28