E951 – Aspartame

Description

N-L-α-aspartyl-L-phenylalanine 1-methyl ester; synthesized by combining aspartic acid and phenylalanine, then modified with methanol

Risks

Notes

Aspartame is an artificial sweetener made by combining two naturally occurring amino acids - aspartic acid and phenylalanine - with methanol (a simple alcohol). These components are chemically bonded together in laboratories to create a compound that's about 200 times sweeter than sugar. The amino acids used can be produced through fermentation processes using bacteria, similar to how yogurt or cheese is made, though the final aspartame molecule is assembled synthetically. This popular sweetener is used to provide intense sweetness without calories in thousands of products worldwide. You'll find it in diet sodas, sugar-free gum, low-calorie desserts, yogurts, and tabletop sweetener packets. It's particularly valued because it tastes very similar to sugar without the lingering aftertaste that some other artificial sweeteners can have, though it does break down when heated for long periods. Aspartame is suitable for vegetarian and vegan diets and complies with most religious dietary requirements. However, it contains phenylalanine, one of its component amino acids, which means products containing aspartame must carry a warning label for people with phenylketonuria (PKU), a rare genetic condition where the body can't properly process phenylalanine. For everyone else, it's considered safe and doesn't affect blood sugar levels, making it popular among diabetics.