| abstract |
Substituted glutamic acid derivatives according to the formula (I) or their physiologically acceptable salts (I) wherein X is selected from hydrogen, methyl or ethyl, Y is selected from hydrogen, methyl or ethyl, Z is CI, Br, F or I, and R 1 and R 3 together with the bonds through which they are connected, forms a 5-membered ring, or R 2 and R 3 together with the bonds through which they are connected, forms a 3-membered ring are useful to impart, enhance or modify umami-and/or salt taste in a comestible product. |