Abstract: For detecting the process of reaction between Bromelain and Fibrinogen, quantum dots synthesized in aqueous solution were used to label bromelain in order to form CdTeBromelain. CdTeBromelain were used to detect the reaction process between CdTeBromelain and Fibrinogen as fluorescent probes. The results show that fluorescence spectrum is gradual blueshift and the fluorescence intensity declines gradually with the increase of time.

Key words: quantum dots, bromelain, electrostatic interaction, fibrinogen