Lemon juice is naturally
acidic, with a pH around
2 to 3. When added to baby foods—especially homemade or shelf-stable options — it
lowers the overall pH of the mixture.
Reducing pH is important because:
- Low pH (more acidic) environments inhibit the growth of harmful bacteria, such as Clostridium botulinum, which can cause botulism.
- A lower pH helps make the food safer for storage — especially if it’s being canned, jarred, or kept for longer periods..
- The target pH for safe home canning is usually below 4.6, and lemon juice helps many foods reach that level..
This is especially useful for
low-acid vegetables like carrots, beets, or squash, which may not be naturally acidic enough on their own..