Nanogold is an emerging and versatile therapeutic agent since decades. Nanoogold its’complexes can be synthesized through different ways. Its’ use in oncology as a drug delivery vehicle, phothothermal agent, Nucliec acid vehicle photodynamic has been investigated by many researchers. Au nanoparticles (AuNPs) are nanovehicles with inimitable optical properties incredible biocompatibility which h...

In this study, a virtual laboratory for synthesizing and analyzing nanogold particles is developed by using the virtual reality technology and situated learning theory. The users can conduct a virtual experiment to become familiar with the process of synthesizing nanogold and understand that nanogold particles in different sizes can be produced by mixing chloroauric acid (HAuCl4) with sodium ci...

COVID-19 virus has spread almost all over the world, including Indonesia until now. in people with diabetes mellitus have a risk of exacerbating symptoms. Diabetes is disease caused by high blood sugar levels. Nanogold very strong anti-oxidant capability, while nanosilver anti-bacterial properties. In this research, nanogold-nanosilver was presented form health drinking water packaged 1 L bottl...

This research has the purpose to determine characteristics of synthesis 20 ppm nanogold using TEM, effect adding on antioxidant activity Moringa leaves, and best concentration that supports increasing in leaves. Nanogold nanosilver were synthesized bottom-up methods. The concentrations used for leaf extract 5, 10, 15, 20, 25, 30 ppm. is Nanosilver at a had inhibition antibacterial activity. Tes...

The reactivity of tyrosinase adsorbed on nanogold bound with 4,4'-bis(methanethiol)biphenyl monolayer self-assembled on a gold disk with catechol in a dipolar aprotic solvent, acetonitrile (AN), was studied by cyclic voltammetric and amperometric methods. Tyrosinase exhibited characteristics of a Michaelis-Menten kinetic mechanism. The tyrosinase attached to the nanogold continued to react with...

Toluidine blue and toluidine blue-nanogold mixtures were incorporated into polyurethane and silicone polymers by a swell-encapsulation-shrink method using acetone-water mixtures. The surface and mechanical properties of the polymers were changed by the swell-shrink process especially the Young’s modulus, but not by the introduction of toluidine blue or nanogold. The antibacterial properties of ...

The study of the interaction of bacteria with surfaces requires the detection of specific bacterial groups with high spatial resolution. Here, we describe a method to rapidly and efficiently add nanogold particles to oligonucleotide probes, which target bacterial ribosomal RNA. These nanogold-labeled probes are then used in an in situ hybridization procedure that ensures both cellular integrity...

The phytohormone abscisic acid (ABA) is the major player in mediating the adaptation of plants to stress. Previously developed phytohormonal biosensors usually employed indirect detection of the products of conjugated oxidase reactions. A label-free electrochemical impedance immunosensor for ABA detection was developed using an anti-ABA antibody adsorbed directly on a porous nanogold film. The ...

Nanogold functionalized mesoporous carbon foam (Au/MCF) coupling with a signal amplification by C-Au synergistic silver enhancement was designed for sensitive electrochemical immunosensing of biomarker. The Au/MCF was prepared by in situ growth of nanogold on carboxylated MCF and used as a tracing tag to label signal antibody via the inherent interaction between protein and nanogold. The immuno...