In this work

a new micro-electrochemical biosensor for glucose is developed for real-time monitoring of plant glucose in vivo. The glucose oxidase（ GOD） is used to catalyze glucose. The cellulose acetate（ CA） is used to increase the immobilization amount of GOD. The polyurethane-epoxy resin（ PU-Epoxy） is used to improve the selectivity and stability of the sensor. The sensor has the advantages of wide linear range

low detection limit

high sensitivity and selectivity

and good reproducibility and stability. The as-prepared biosensor is successfully used to real-time monitoring the glucose in aloe in real-time and in vivo.