[PDF] Top 20 Gold nanoparticle based colorimetric biosensors

... of colorimetric biosensors as they can be easily functionalised, displaying different colours depending on their size, shape and state of ...of biosensors have been developed to exploit the extent of ... See full document

... in colorimetric platforms for the detection of a variety of analytes ...the gold salt and functionalization with phosphorylated dipeptide pTyr-Arg substrate occurred simultaneously in the presence of ... See full document

... MNPs have particular optical properties which are significantly different from those observed in the bulk metal. When incident light interacts with MNPs, the electromagnetic field of the light induces a collective coherent ... See full document

... of sensor probe with a 2 cm sensing length shown in Fig. 4.2 (b) is much higher than those of sensor probes with a 1 cm sensing length and with GNRs aspect ratios lower than 4.1, but still lower than that of sensor ... See full document

... The in vitro cytotoxicity of the beacon was assessed prelimi- narily by the colorimetric 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide (MTT) assay using HepG-2 and PC12 cells. Briefly, the cells ... See full document

... performance with longer sequences and failure with the probe and target interactive analysis [20 – 22]. These might be due to the higher charges on the biomolecules that make a stronger interaction with GNP surface elec- ... See full document

... [1]. Biosensors typically consist of a biological recognition layer ...a colorimetric signal and with detection limits approaching picomolar ...in biosensors, optical-based technique is the ... See full document

... 2+ colorimetric assays were developed based on AuNPs probes modified by specifically combining molecules of with Pb 2+ specific agents, such as DNAzyme [4]-[8] and molecular containing sulfydryl group, ... See full document

... of biosensors, zeolites are promising materials for enzyme immobilization since they have a large sur- face area, thermal/mechanical stabilities, ion exchange capacity and controllable ...containing ... See full document

... To demonstrate the viability of the method for clinical assays, quantifications of PSA in serum samples from two healthy donors and two prostate patients were carried out. It can be clearly observed that the solution ... See full document

... AuNP-GO biosensors, GO immobi- lized in the AuNP-GO nanocomposite showed the high- est bioaffinity, with good sensitivity, low detection limit, and fast response toward the protein ...plying biosensors in ... See full document

... Table 1 lists GNP characterization in different media. According to these studies, when GNP are dispersed in biological fluids, DLS shows an increase of their hydro- dynamic size. As mentioned in several references of ... See full document

... The increasing number of pollutants and their derivatives both in surface and ground waters as well as the stricter regulations for pollutant detection set by legislative bodies prompted great interest in a inexpensive ... See full document

... Lipid rafts are increasingly regarded as membrane structures having an important impact in major cellular functions, e.g., cell signaling, internalization of extracellular molecules and entities. Moreover, it is now ... See full document

... The present paper describes a variety of approaches and strategies to construct nanosensors based on lipid film technology and implement them for food and environmental analyses. The recent technological advances ... See full document

... introduced. Gold nanopar ticles (GNPs) have received considerable attention due to their ease of synthesis, flexible surface modification, bioconjugation and optical ... See full document

... Keywords: heavy metal analyses; gold nanoparticles; oligonucleotide; antimony; color change.. Antimony pollution is of increasing interest because of its wide use in various.[r] ... See full document

... The detection and prevention of food borne pathogenic bacteria are obviously very important in maintaining humans and other animals healthy. Campylobacter, Salmonella, Listeria monocytogenes, Escherichia coli (E. coli) ... See full document

... 14-nm gold nanoparticles promoted an increase in the G2/M cell phase, compared to the control, which lead to enhanced SK-OV-3 cell sen- sitivity to 6 MV X-ray exposure (Geng et  ... See full document

... adding AuNP to the methylene blue solution, the blue color changes readily, indicating a oxidation reaction took place immediately. The purple color emerged instead of clear solution, which suggested that the AuNPs were ... See full document