Rini, Ari Sulistyo2022-01-172022-01-172021-07wahyu sari yenihttps://repository.unri.ac.id/handle/123456789/10402Biosynthesis of silver (Ag) nanoparticles has been carried out by reacting pineapple peel extract as a reductant and 5 mM AgNO3 solution. The nanoparticle synthesis process was done at a temperature of 80oC for 30 minutes. The obtained nanoparticles were characterized using UV-Vis spectrophotometer and FTIR to study their optical properties and functional groups. The UV-Vis absorption spectrum showed the formation of nanoparticles which is indicated by the appearance of the absorbance peak at a wavelength of 406 nm. The FTIR spectrum shows the optical absorption of functional groups O-H, C=O, and C≡C which is the polyphenol content of pineapple peel extractenBiosynthesisPineapple peelNanoparticleArticle