Are lemon and lime juice interchangeable in canning tomatoes?

Lemon and lime juice are not interchangeable in canning tomatoes. Lemons and limes have a different pH level, which can affect the safety of the canned tomatoes.

Tomatoes are considered to be a high-acid food, with a pH level below 4.6. This means that adding lemon or lime juice, which both have a pH level above 4.6, can raise the pH level of the tomatoes and create an environment that is more favorable to bacteria growth.

To safely can tomatoes, it is important to use an acidifier such as vinegar or citric acid, which have a pH level below 4.6. These acids help prevent bacteria growth by lowering the pH level of the tomatoes and making them more acidic.