Bottled lemon juice or lemon juice concentrate has a shelf life of 6 to 9 months when stored in the refrigerator. Freshly squeezed lemon juice has a significantly shorter shelf life of 2 to 3 days when stored in the refrigerator.
Lemon juice can also be stored in the freezer for up to a year. One way to store lemon juice is by placing the juice in an ice cube tray, allowing it to freeze completely and then placing the cubes in an airtight container in the freezer. Lemon juice that smells bad or has an odd color should not be consumed.