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The L -isomer is used to biochemically form proteins coded for by DNA. Phenylalanine is a precursor for tyrosine, the monoamine neurotransmitters dopamine, norepinephrine (noradrenaline), and epinephrine (adrenaline), and the biological pigment melanin. It is encoded by the messenger RNA codons UUU and UUC.
Aspartame is a methyl ester of the dipeptide of the natural amino acids L - aspartic acid and L - phenylalanine. [4] Under strongly acidic or alkaline conditions, aspartame may generate methanol by hydrolysis. Under more severe conditions, the peptide bonds are also hydrolyzed, resulting in free amino acids.
Aspartame controversy. The artificial sweetener aspartame has been the subject of several controversies since its initial approval by the U.S. Food and Drug Administration (FDA) in 1974. The FDA approval of aspartame was highly contested, beginning with suspicions of its involvement in brain cancer, [1] alleging that the quality of the initial ...
Coke Zero has an almost identical ingredient list, except that it uses aspartame and acesulfame potassium as sweetening agents while Diet Coke just uses aspartame. Additionally, the flavors used ...
That’s because the WHO’s consumption limit of aspartame was a maximum of 40 milligrams per kilogram of body weight per day. For a 130-pound person, that is equivalent to 12 cans of Diet Coke ...
In lieu of sugar, Diet Coke and Diet Pepsi employ aspartame, an artificial sweetener that imparts sweetness sans calories. Some other diet drinks on the market use different low- or no-cal ...
Diet soda. Diet or light beverages (also marketed as sugar-free, zero-calorie, low-calorie, zero-sugar or zero) are generally sugar-free, artificially sweetened beverages with few or no calories. They are marketed for diabetics and other people who want to reduce their sugar and/or caloric intake.
A low-phenylalanine diet avoids high-protein foods like meat, dairy, nuts, and certain grains. Additionally, products containing aspartame must carry a warning for people with PKU.