Biosynthesis of Stable Polyshaped Gold Nanoparticles from Microwave-Exposed Aqueous Extracellular Anti-malignant Guava (Psidium guajava) Leaf Extract View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2009-10-06

AUTHORS

D. Raghunandan, S. Basavaraja, B. Mahesh, S. Balaji, S. Y. Manjunath, A. Venkataraman

ABSTRACT

Addition of microwave-exposed aqueous extracellular anti-malignant guava (Psidium guajava) leaf extract to the aqueous gold chloride solution yielded stable polyshaped gold nanoparticles of high composition. Microwave-assisted route selected for the preparation of aqueous guava leaf extract was to suppress the enzymatic action. The formation of nanoparticles was understood from the UV–visible and X-ray diffraction studies. The size and shape analysis was done using field emission scanning electron microscopy, transmission electron microscopy, and atomic force microscopy. Zeta potential experiment shows that the bio-functionalized gold nanoparticles colloidal solution obtained as above will maintain its stability even after 30 weeks of storage. It is observed that the flavonoids which are separated during microwave heating of extracellular solution of the guava leaves are responsible for the biosynthesis of gold nanoparticles. More... »

PAGES

34-41

References to SciGraph publications

  • 2004-04-30. Applications of nanoparticles in biology and medicine in JOURNAL OF NANOBIOTECHNOLOGY
  • 2008-03. Antioxidant properties of gold nanoparticles studied by ESR spectroscopy in RUSSIAN CHEMICAL BULLETIN
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s12030-009-9030-8

    DOI

    http://dx.doi.org/10.1007/s12030-009-9030-8

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