buffers

views updated

buffers Substances that prevent a change in the pH when acid or alkali is added. Salts of weak acids and bases are buffers and are commonly used to control the acidity of foods. Amino acids and proteins also act as buffers. The pH of blood is maintained by physiological buffers including phosphates, bicarbonate, and proteins.

About this article

buffers

Updated About encyclopedia.com content Print Article Share Article