Aspartame is a high intensity sweetener also identified as N-L-alpha-Aspartyl-L-phenylalanine-1-methly ester. It is a dispeptide composed of two amino acids, L-aspartic acid and L-phenylalanine. These constituents are found in everyday foods and are metabolized by human body. Niutang Aspartame has a clean sweet taste that is approximately 200-300 sweeter than sugar. It has an energy value of 4 calories per gram and can reduce products calorie content by 99%, significantly lower the glycaemic index (GI) of foods and is non-cariogenic. Aspartame has been approved by the World Health Organization (WHO) in addition to the Food and Agricultural Organization (FAO). It is ratified for use in over 130 countries and regions around the world. Aspartame can be found in over 4000 different types of food and beverages.