Acesulfame Potassium (E950)

Type of additiveSweeteners
E NumberE950
Chemical FormulaC4H4KNO4S
Also Known AsAcesulfame K
Ace K

Purpose and Function

Acesulfame potassium, commonly referred to as Ace-K, is an artificial sweetener that is approximately 200 times sweeter than sucrose (table sugar). Due to its intense sweetness, it is used in very small amounts to achieve the desired sweetness in various food and beverage products without adding calories. Ace-K is often found in sugar-free and “diet” products, such as:

  • Beverages: Used in soft drinks, energy drinks, and flavored waters as a low-calorie sweetener.
  • Baked Goods: Employed in sugar-free baked products to provide sweetness without contributing to the caloric content.
  • Dairy Products: Found in products like sugar-free yogurts and ice creams.
  • Tabletop Sweeteners: Often combined with other sweeteners like aspartame or sucralose to create a balanced flavor profile.

Beyond food, acesulfame potassium is also used in pharmaceuticals and oral hygiene products, such as toothpaste and mouthwash, where it provides sweetness without contributing to dental decay.


Potential Risks and Side Effects

Acesulfame potassium is generally recognized as safe by major health regulatory agencies, including the FDA, EFSA, and WHO. However, its safety has been a subject of controversy and ongoing debate due to concerns raised in some studies and by certain health advocates.

  • Carcinogenic Concerns: Some early animal studies suggested a potential link between acesulfame potassium and cancer. However, subsequent studies and reviews by regulatory agencies have not confirmed these findings, and Ace-K is currently deemed non-carcinogenic at the levels typically consumed by humans.
  • Effect on Gut Health: There is emerging research on the impact of artificial sweeteners, including Ace-K, on gut microbiota. Some studies suggest that these sweeteners could potentially alter gut bacteria, leading to metabolic changes. However, more research is needed to draw definitive conclusions.
  • Potential for Overconsumption: Since acesulfame potassium is used in many low-calorie and sugar-free products, there is a potential for cumulative overconsumption, especially among individuals who consume large quantities of these products. While the additive is considered safe within recommended limits, excessive intake could potentially lead to unintended health consequences.