a calorie-free artificial sweetener, also known as acesulfame k or ace k, and marketed under the trade names sunett and sweet one. Acesulfame potassium is 180-200 times sweeter than sucrose (table sugar), as sweet as aspartame, about half as sweet as saccharin, and one-quarter the sweetness of sucralose. Like saccharin, it has a slightly bitter aftertaste, especially at high concentrations. Kraft foods has patented the use of sodium ferulate to mask acesulfame’s aftertaste. Alternatively, acesulfame k is often blended with other sweeteners (usually sucralose or aspartame) acidophilus bacteria found in yogurt that, when ingested, helps restore the normal bacterial populations in the human digestive system.