How does lime juice preserve salsa?

Lime juice preserves salsa by creating an acidic environment that inhibits the growth of bacteria. The acidity of the lime juice lowers the pH of the salsa, making it less hospitable to microorganisms. Additionally, the citric acid in lime juice has antimicrobial properties that can directly kill bacteria.

The amount of lime juice needed to preserve salsa depends on the acidity level of the other ingredients in the salsa and the desired shelf life. A salsa that contains other acidic ingredients, such as tomatoes, will require less lime juice than a salsa that does not. A salsa that is intended to be stored for a longer period of time will also require more lime juice.

In addition to lime juice, other ingredients can be used to preserve salsa, including vinegar, salt, and sugar. These ingredients work together to create an inhospitable environment for bacteria and prevent spoilage.