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Goroho banana is one of plantain type, locally grown crops in North Sulawesi and potential as excellent source bioactivities including antioxidant phytochemical content and macronutrients.The silver nanoparticles have made by mixing goroho banana peel extract with silver nitrate solution (10 -3 M) at roomtemperature. The silver nanoparticles were characterized using spectrophotometer UV-Vis and infrared (IR), while the morphology and particle size have determined by SEM (Scanning Electron Microscope). The anti-photooxidative activity of silver nanoparticles with the concentration 40; 60100and200mg/mL were evaluated in linoeat acid emulsion system that containing 5 μg/mL erythrosine as sensitizer and illuminated with fluorecent 4000 lux for 5 hours. TheUV-Vis spectra shows that surface plasmon resonance (SPR) at wavelength 423-442 nm. It proves that there was a reduction of silver ion (Ag + ) to silver (Ag 0 ) and indicates the formation of silver particles. The spectra of IR at 4302 cm -1 shows that the presence of hidroxyl groups (OH) from polyphenol compounds in goroho banana peel extracts while the IR spectras of silver nanoparticles at the ribbon 3448 cm -1 . The characterization with SEM shows that silver nanoparticles have sized by the range at 254-768 nm; 41-98 nm and 53-90 nm. On assessment with the silver nanoparticles having effect on singlet oxygen quenching at all of concentration levels compared to banana goroho extract. The results of this research proves that antioxidant of banana goroho peels extract can act as an agent to synthesized silver nanoparticles possess singlet oxygen quenching acitivity.

Singlet Oxygen Quenching activity of Silver Nanoparticles Synthesized using Goroho Banana Peel (Musa acuminata)