Biosynthetic Route for the Preparation of Nonregular Gold Nanoparticles Using Aqueous Extracted of Nettle (Urtica dioica L.) Plant

2015-01-01
Molaei, Rahim
Farhadi, Khalil
Forough, Mehrdad
Pourhossein, Atefeh
In this study, the bioreduction of Au (III) ions to Au-0 are proposed by using the biomass come from nettle (Urtica dioica L.) leaves as a pharmaceutical plant. This biomimetic, safe and cost effective procedure has led to the preparation of irregular gold nanosized particles. The synthesized gold nanoparticles were characterized with UV-Vis, transmission electron microscopy, X-ray diffraction, dynamic light scattering, FT-IR, and zeta potential measurement techniques. The obtained results indicated the formation of colloids with hydrodynamic diameters from 1 to 195 nm, different shapes, fcc crystalline structure, and negative surface charge of particles in gold nanosuspension.
SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY

Suggestions

Enzymatic extraction of activated sludge extracellular polymers and implications on bioflocculation
Sesay, Ml; Özcengiz, Gülay; Sanin, Faika Dilek (Elsevier BV, 2006-04-01)
This study examines enzyme hydrolysis, a mild, effective, but a rarely used method of extracellular polymer extraction, in removing polymers from mixed culture activated sludge flocs. Two carbohydrate specific enzymes (a-amylase and cellulase) and a protein specific enzyme (proteinase) are used during the study. First, the kinetic aspect is investigated, then enzyme dose optimization is carried out on laboratory grown activated sludge samples cultured at solids retention times (SRT) of 4 and 20 days. A more...
Enzymatic Hydrolysis of Fruit Peels and Other Lignocellulosic Biomass as a Source of Sugar
POCAN, Pelin; BAHÇEGÜL, Erinc; Öztop, Halil Mecit; Hamamcı, Haluk (2018-06-01)
Glucose and reducing sugars were obtained from corn cobs, orange and pomegranate peels by employing different enzymatic hydrolysis and pretreatment strategies. For the hydrolysis of corn cobs, effect of alkaline pretreatment was examined. Effect of cellobiase loading on hydrolysis was also investigated. Glucose content was measured using a Blood Glucose Monitor. When cellobiase was also added to hydrolysate, glucose and TRS yield increased from 20 and 34% respectively. Unlike corncobs, alkaline pretreatment...
Protease secretion capacity and perforce analysis of recombinant Bacillus species
Çalık, Pınar; Ozdamar, TH (2000-10-08)
Recombinant Bacillus species carrying subC gene encoding serine alkaline protease (SAP) enzyme were developed in order to increase the yield and selectivity in the bioprocess for SAP production. subC gene was amplified from the chromosomal DNA of the wild-type Bacillus licheniformis by using PCR technology; thereafter, subC gene was first cloned into the pRS316 E. coli yeast shuttle plasmid, then sub-cloned into the pHV1431 E. coli-Bacillus shuttle vector, and transferred to the host Bacillus species, i.e. ...
Activated carbon-supported CuO nanoparticles: a hybrid material for carbon dioxide adsorption
Boruban, Cansu; Nalbant Esentürk, Emren (Springer Science and Business Media LLC, 2018-02-28)
Activated carbon-supported copper(II) oxide (CuO) nanoparticles were synthesized by simple impregnation method to improve carbon dioxide (CO2) adsorption capacity of the support. The structural and chemical properties of the hybrid material were characterized by scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD), Xray photoelectron spectroscopy (XPS), atomic absorption spectroscopy (AAS), and Brunauer-Emmett-Teller (BET) analyses. The analyses showed that CuO nanopart...
Resveratrol as a Growth Substrate for Bacteria from the Rhizosphere
Kurt, Zöhre; Spain, Jim C. (2018-05-01)
Resveratrol is among the best-known secondary plant metabolites because of its antioxidant, anti-inflammatory, and anticancer properties. It also is an important allelopathic chemical widely credited with the protection of plants from pathogens. The ecological role of resveratrol in natural habitats is difficult to establish rigorously, because it does not seem to accumulate outside plant tissue. It is likely that bacterial degradation plays a key role in determining the persistence, and thus the ecological...
Citation Formats
R. Molaei, K. Farhadi, M. Forough, and A. Pourhossein, “Biosynthetic Route for the Preparation of Nonregular Gold Nanoparticles Using Aqueous Extracted of Nettle (Urtica dioica L.) Plant,” SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY, pp. 1489–1494, 2015, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/90437.