Biosynthesis of phyto-functionalized silver nanoparticles using olive fruit extract and evaluation of their antibacterial and antioxidant properties Tekijä Sami Ullah, Rimsha Khalid, Muhammad F. Rehman, Muhammad I. Irfan, Azhar Abbas, Ali Alhoshani, Farooq Anwar, Farooq Anwar, Hatem M. A. Amin, Hatem M. A. Amin