INHIBITORY EFFECT OF SILVER NANOPARTICLES PRODUCED BY ARABIC GUM EXTRACT ON THE INHIBITION OF THE PRODUCTION OF FUMONISIN B1 BY FUSARIUM OXYSPORUM

Aims: Production of Silver Nanoparticles by Arabic gum extract on the Inhibition of the production of Fumonisin B1 by Fusarium Oxysporum

Study Design: The quality of silver nanoparticles AgNPs biosynthesized by Arabic gum was assessed, and the efficacy of silver nanoparticles in inhibiting the production of Fumonisin B1by Fusarium Oxysporum was also evaluated.

Methodology: The production of silver nanoparticles was mix 4ml of Arabic gum extract and fill the volume to 5.5 ml of distilled water, then the pH is equalized by sodium hydroxide NaOH, then 1ml of silver nitrate AgNO3 is added at a concentration of 0.2 ml, then the mixture is put on a heater at a temperature of 90 ° C for a period of time. 2 hours and wait for the color to change.

Results: The results indicated the efficacy of Arabic gum extract in producing silver nanoparticle . Findings also confirmed product quality dependent on Characterization of bio synthesized AgNPs depending on the physical characteristics including UV- Spectrophotometer analysis that showed peak at 420nm wavelength , Scanning Electron Microscopy Test (SEM) showed that silver nanoparticles are spherical in shape and have a diameter ranging between 50-30nm, The results of Fourier-transform infrared spectroscopy (FTIR) showed the presence of a wide band of hydroxyl groups present in Arabic gum , which act as reducing agents to form SNPS , The results of X-Ray diffraction (XRD) showed that the highest diffraction peaks are at 111 and 200 at angles 44, 38ᶿ and that the silver nanoparticles are crystalline in nature.. The results showed that all nano-treatments inhibited the production of Fumonisin B1.

Conclusion: The study was conducted in the advanced fungi laboratory in the College of Education for Girls, University of Kufa. Isolation of the fungus Fusarium oxysporum was obtained from Dr. Ali Faraj Jubeir, College of Agriculture, University of Al-Muthanna .