food acidity regulator, also known as pH regulators, food acidity regulator are substances used to maintain or change the pH of foods. It is mainly useful for controlling acidifiers, alkaline agents and salts that have a buffering effect. Acidifiers have many functional properties that improve food quality, such as changing and maintaining the acidity of food and improving its flavor; enhancing the antioxidant effect to prevent food from rancidity; complexing with heavy metal ions, preventing oxidation or fade reactions, stabilizing color, reducing Turbidity, enhancing gelling properties, etc.