Pure nano gold Colloidal dispersions as a marker in biological system

In recent years, the gold nanoparticles assembly of DNA mediated research widely attention, alkane thiol modified oligonucleotides with nanometer gold covalent bonding, form and purpose polynucleotide sequence probe hybridization, reversible gold nanoparticles were assembled into supramolecular structure, accumulation process is with red to blue, the color change of the resulting derived new method colorimetry to detect backlog DNA sequence.The method has high selectivity and good sensitivity, and can be used in dot hybridization, chip detection and other fields. The dispersion system formed by gold nanoparticles in water is commonly known as colloidal gold. The gold particles can be firmly bound with the amino group by non-covalent electrostatic adsorption, forming a strong AU-S covalent bond with the sulfhydryl group, which makes the colloidal gold can be combined with the bioactive molecules, and the probe formed can be used in the detection of biological system. Immunogold and immunogold silver staining using colloidal gold as a marker can be used for single or multiple labeling, and can be used for qualitative, localization and even quantitative study of macromolecules, which has been widely used in many fields of medicine and biology. Guangzhou Hongwu Material Technology Co.,ltd is supplying 99.99% au colloidal gold dispersion, size 20nm, 100ppm-10000ppm. Every order that we process reflects the care and quality that has been the cornerstone of our continued growth.