Simple and visual approach for highly selective biosensing of vitamin B1 based on glutathione coated silver nanoparticles as a colorimetric probe

We report a simple visual colorimetric method for the highly sensitive and selective detection of thiamine (Vitamin B1) by silver nanoparticles (AgNPs) as a probe. AgNPs surface was modified by glutathione (GSH) and their morphology, size distribution and optical properties were characterized by high resolution transmission electron microscope (HR-TEM) and various analytical spectroscopic techniques. The sensitivity of colorimetric assay is...