An alkalizing agent is a substance that helps increase the alkalinity (pH value) of a solution or substance, making it less acidic and more basic. It balances the acidity by adding alkaline properties. Full definition
Well, I recently learned that proper red velvet is made with buttermilk, a little vinegar, and natural cocoa (as opposed to Dutch - processed or cocoa processed with alkalizing agents). (noexcusesnutrition.com)
Citric acid helps stabilize blood sugar levels and combat the inflammatory effects of sugar while also serving as an alkalizing agents for the body. (drjockers.com)
I often add a simple greens powder that contains algae, leafy greens, and vegetables for extra fiber, cleansing and alkalizing agents. (mindbodygreen.com)