The application provides a method for screening active ingredients capable of activating TAS1R3 receptors, and belongs to the technical field of screening of active ingredients of traditional Chinese medicines. The application establishes a
biosensor, and the
biosensor detects the current
signal after each concentration of compound solution reacts with the TAS1R3
receptor; the
dissociation constant K D of the interaction between the compound and the TAS1R3
receptor is calculated according to the
linear fitting equation between the
common logarithm of the concentration of the compound and the current change, and the compound with the K D value in the range of 10 ‑13 -10 ‑8 M is screened as the
active ingredient capable of activating the TAS1R3
receptor. In the application, the interaction
dissociation constant K D of the Atractylodes
lactone II and the glycyrrhizic acid with the TAS1R3
protein is 3.759*10 ‑8 M and 4.435*10 ‑9 M respectively, and the
binding force with the TAS1R3
protein is very strong. Moreover, the Atractylodes
lactone II and the glycyrrhizic acid have the function of improving
anemia within a certain concentration, and provide a new idea for the screening of candidate compounds with the sweet characteristic and the treatment of
anemia or blood
deficiency syndrome in traditional Chinese medicines and the research and development of new drugs.