The primary acid found in pears is malic acid.
Malic acid is a naturally occurring organic compound that contributes to the tart and slightly sour taste of pears. It is also found in other fruits, such as apples, grapes, and cherries.
Malic acid plays a role in the ripening process of pears, influencing their sweetness and texture.
In addition to malic acid, pears contain smaller amounts of other acids, including citric acid and tartaric acid.