THE INVENTORS OF THIS INVENTION HAVE CONDUCTED THE SEARCH FOR MOST OF VARIATIONAL COMPOUNDS WHICH MAY POSSESS A DESIRED CASR AGONIST ACTIVITY TO THUS FIND OUT A SUBSTANCE CAPABLE OF IMPARTING A KOKUMI, WHICH SHOWS A MORE EXCELLENT KOKUMI-IMPARTING EFFECT, IN PARTICULAR, A KOKUMI-IMPARTING EFFECT OF THE INITIAL TASTE-IMPARTING TYPE ONE, WHICH IS EXCELLENT IN THE STABILITY AND WHICH CAN EASILY BE PRODUCED AT A LOW COST AND THE PRESENT INVENTION THUS PROVIDE A KOKUMI-IMPARTING AGENT CONSISTING OF SUCH A SUBSTANCE AS WELL AS A COMPLEX KOKUMI-IMPARTING AGENT COMPRISING THE SUBSTANCE AND OTHER SUBSTANCES POSSESSING THE CASR AGONIST ACTIVITIES IN COMBINATION. MORE PARTICULARLY, THE PRESENT INVENTION HEREIN PROVIDES A KOKUMI-IMPARTING AGENT CONSISTING OF y-GLU-NVA (L-y-GLUTAMYL-L-NORVALINE) AND A COMPLEX KOKUMI-IMPARTING AGENT COMPRISING THE FOREGOING SUBSTANCE AND ANOTHER SUBSTANCE HAVING A CASR AGONIST ACTIVITY, IN COMBINATION.
