pH is the term used universally to express the intensity of the acidity of a solution. pH is defined as the negative logarithm of the hydrogen ion concentration.
More precisely, acids are defined as those compounds that release a proton (H+, hydrogen ion) whereas bases are those compounds that accept protons. Thus, pH is the measurement of hydrogen ion (H+) activity.
pH adjusting agent, acid-reacting material or water correcting agent means a food additive that is used to alter or control the acidity or alkalinity of a food or to prevent a food from drying out.
Example of permitted pH adjusting agents, acid-reacting materials and water correcting agents:
Acetic Acid
Adipic acid
Calcium Acetate
Ammonium Bicarbonate
Calcium Carbonate
Carbon Dioxide
Ammonium citrate, monobasic
Ammonium hydroxide
Citric Acid
Lactic Acid
pH adjusting agent
