The use of sentul fruit peel (SandoricumKoetjape) as a biostabilizer in the fabrication of zinc oxide (ZnO) nanoparticles has been carried out as an alternative way to environmentally friendly production. This study aims to obtain zinc oxide (ZnO) nanoparticles by reacting 0.2 M Zn(NO3)2.6H2O (zinc nitrate hexahydrate) precursor solution with sentul fruit peel extract (KBS). Samples were va…