What is the most common type of food additive used in the world?

The most common type of food additive used in the world is salt, also known as sodium chloride. Salt is used as a preservative and flavor enhancer in a wide variety of foods, including meats, breads, cheese, and snack foods. It is estimated that about 90% of the sodium in the average American diet comes from salt added to processed and restaurant foods.

Other common food additives include preservatives, flavorings, emulsifiers, and thickeners. Preservatives are used to prevent spoilage and extend shelf life, while flavorings are added to enhance the taste of food. Emulsifiers are used to keep ingredients from separating, while thickeners are used to create a desired texture or consistency.