Absar Ahmad et al 2003 Nanotechnology 14 824 doi:10.1088/0957-4484/14/7/323
Intracellular synthesis of gold nanoparticles by a novel alkalotolerant actinomycete, Rhodococcus species
Absar Ahmad1,5, Satyajyoti Senapati2, M Islam Khan1, Rajiv Kumar2, R Ramani3, V Srinivas3 and Murali Sastry4,5
Show affiliationsThe development of reliable, eco-friendly processes for the synthesis of nanoscale materials is an important aspect of nanotechnology. In this paper, we report on the use of an alkalotolerant actinomycete (Rhodococcus sp.) in the intracellular synthesis of gold nanoparticles of the dimension 5–15 nm. Electron microscopy analysis of thin sections of the gold actinomycete cells indicated that gold particles with good monodispersity were formed on the cell wall as well as on the cytospasmic membrane. The particles are more concentrated on the cytoplasmic membrane than on the cell wall, possibly due to reduction of the metal ions by enzymes present in the cell wall and on the cytoplasmic membrane. The metal ions were not toxic to the cells and the cells continued to multiply after biosynthesis of the gold nanoparticles.
- PACS
-
87.16.-b Subcellular structure and processes
87.85.Qr Nanotechnologies-design
81.16.Fg Supramolecular and biochemical assembly
81.07.Bc Nanocrystalline materials
- Subjects
- Dates
-
Issue 7 (July 2003)
Received 22 April 2003
Published 6 June 2003
-
Intracellular synthesis of gold nanoparticles by a novel alkalotolerant actinomycete, Rhodococcus species
Absar Ahmad et al 2003 Nanotechnology 14 824
-
Discrepancies in air density determination between the thermodynamic formula and a gravimetric method: evidence for a new value of the mole fraction of argon in air
A Picard et al 2004 Metrologia 41 396
-
A Product Integraph
J C Jaeger and J D Clarke 1949 J. Sci. Instrum. 26 155
-
Fast ion-induced CO molecule fragmentation in the strong interaction regime
L Adoui et al 1999 J. Phys. B: At. Mol. Opt. Phys. 32 631
-
Amplitude distribution of eigenfunctions in mixed systems
Arnd Bäcker and Roman Schubert 2002 J. Phys. A: Math. Gen. 35 527
-
Pulse oximetry as a medical physics practical on school trips
Adam P Gibson et al 2009 Phys. Educ. 44 577
-
Two-parameter nonlinear spacetime perturbations: gauge transformations and gauge invariance
Marco Bruni et al 2003 Class. Quantum Grav. 20 535
-
Invariant manifolds of L3 and horseshoe motion in the restricted three-body problem
Esther Barrabés and Mercè Ollé 2006 Nonlinearity 19 2065
-
Angular distribution of the Ne
autoionization resonances: experimental and theoretical study
B Langer et al 1997 J. Phys. B: At. Mol. Opt. Phys. 30 593
-
Reconstruction of conductivity changes and electrode movements based on EIT temporal sequences
Tao Dai et al 2008 Physiol. Meas. 29 S77
Users also read
What's this?- Synthesis and optical properties of colloidal gold nanoparticles
- Synthesis of nanosilver particles by reverse micelle method and study of their bactericidal properties
- Biosynthesis and stabilization of Au and Au–Ag alloy nanoparticles by fungus, Fusarium semitectum