PMID- 31141208 OWN - NLM STAT- MEDLINE DCOM- 20191111 LR - 20200108 IS - 1470-8744 (Electronic) IS - 0885-4513 (Linking) VI - 66 IP - 4 DP - 2019 Jul TI - Green synthesis and bactericidal activities of isotropic and anisotropic spherical gold nanoparticles produced using Peganum harmala L leaf and seed extracts. PG - 664-672 LID - 10.1002/bab.1782 [doi] AB - Shape, size, and homogeneity affect the biological activity of gold nanoparticles (AuNPs) in nanomedicine and catalytic applications. Here we biosynthesized monodispersed isotropic and polydispersed anisotropic spherical AuNPs from leaf and seed extract broths of the medicinal plant Peganum harmala L. (Ph. L). Synthesized AuNPs were characterized by ultraviolet-visible spectroscopy, Fourier-transform infrared spectroscopy (FT-IRS), field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), and transmission electron microscopy (TEM). The antimicrobial activity of AuNPs against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) human pathogens was also assessed. Leaf- and seed-derived AuNPs had characteristic localized surface plasmon resonances of 530 and 578 nm, respectively. TEM, FE-SEM, EDX, and XRD revealed the formation of elemental face-centered cubic spherical monodispersed isotropic AuNPs of average size 43.44 nm and polydispersed anisotropic AuNPs of average size 52.04 nm from leaf and seed extract broths, respectively. FT-IR revealed polyphenols and alcohols as responsible for AuNP capping, reduction, and protection. Anisotropic AuNPs showed no antibacterial activity, whereas isotropic AuNPs showed good inhibition of both E. coli and S. aureus. This represents a simple and ecofriendly protocol for the green synthesis of monodispersed isotropic spherical AuNPs, which may have value in a variety of applications. CI - (c) 2019 International Union of Biochemistry and Molecular Biology, Inc. FAU - Moustafa, Nagy E AU - Moustafa NE AUID- ORCID: 0000-0003-1104-6445 AD - Department of Chemistry, Faculty of Science and Arts in Mukwah, Albaha University, 65931, Bidah Valley, Saudi Arabia. FAU - Alomari, Abdulaziz Ali AU - Alomari AA AD - Department of Chemistry, Faculty of Science and Arts in Mukwah, Albaha University, 65931, Bidah Valley, Saudi Arabia. LA - eng PT - Journal Article DEP - 20190605 PL - United States TA - Biotechnol Appl Biochem JT - Biotechnology and applied biochemistry JID - 8609465 RN - 0 (Plant Extracts) RN - 7440-57-5 (Gold) SB - IM MH - Escherichia coli/chemistry/*metabolism MH - Gold/chemistry/*metabolism MH - *Green Chemistry Technology MH - Humans MH - Metal Nanoparticles/*chemistry MH - Peganum/*chemistry/metabolism MH - Plant Extracts/chemistry/metabolism MH - Plant Leaves/*chemistry/metabolism MH - Seeds/*chemistry/metabolism MH - Staphylococcus aureus/chemistry/*metabolism MH - Surface Plasmon Resonance OTO - NOTNLM OT - Peganum harmala L OT - anisotropic OT - antibacterial OT - gold nanoparticles OT - isotopic EDAT- 2019/05/30 06:00 MHDA- 2019/11/12 06:00 CRDT- 2019/05/30 06:00 PHST- 2019/03/19 00:00 [received] PHST- 2019/05/28 00:00 [accepted] PHST- 2019/05/30 06:00 [pubmed] PHST- 2019/11/12 06:00 [medline] PHST- 2019/05/30 06:00 [entrez] AID - 10.1002/bab.1782 [doi] PST - ppublish SO - Biotechnol Appl Biochem. 2019 Jul;66(4):664-672. doi: 10.1002/bab.1782. Epub 2019 Jun 5.