Research Article

Tyrosinase-Immobilized Biosensor Based on the Functionalized Hydroxyl Group-MWNT and Detection of Phenolic Compounds in Red Wines

Figure 4

SEM images of the surface of ITO glass (a), chitosan-coated ITO (b), tyrosinase-immobilized chitosan-ITO electrode (c), and tyrosinase-immobilized biosensor based on poly(GVPB)- -MWNT (d).
916515.fig.004a
(a)
916515.fig.004b
(b)
916515.fig.004c
(c)
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(d)