1 23 Journal of Nanostructure in Chemistry ISSN 2008-9244 Volume 9 Number 2 J Nanostruct Chem (2019) 9:111-117 DOI 10.1007/s40097-019-0301-1 Biosynthesis, characterization and antimicrobial activity of gold nanoparticles from leaf extracts of Annona muricata Aderonke Folorunso, Sunday Akintelu, Abel Kolawole Oyebamiji, Samuel Ajayi, Babawale Abiola, Ibrahim Abdusalam & Adetoun Morakinyo