ABSTRACT Research on the biosynthesis of ZnO nanomaterials using pineapple extract and their antibacterial activity has been carried out. The aim of this research were to modify and characterize ZnO nanomaterials and its application as an E.Coli antibacterial. ZnO nanomaterials were formed through a biosynthesis process of Zn(NO3)2.6H2O as precursor with pineapple fruit extract acts as a biore…