Citric acid

If you've got a green thumb, you're probably already familiar with the benefits of citric acid. This natural preservative is found in citrus fruits such as lemons and limes.

Citric acid is a food-grade acid that helps preserve vitamin C and prevent discoloration as well as the growth of mold and bacteria. Citric acid from Now can be useful for sprouting your seeds or for preserving canned, dried and frozen foods.