The biosynthesis of metal nanoparticles using plants, enzymes, and microorganisms has been recognized as an environmentally friendly procedure as an alternative to physical and chemical methods. In this research, ZnO nanoparticles was synthesized using Zn(NO3)2 and pineapple peel extract (ananascomosus) as precursor and bioreductor, respectively. The synthesis process was carried out by mi…