Sucrose capped gold nanoparticles as a plasmonic chemical sensor based on non-covalent interactions: Application for selective detection of vitamins B 1 and B 6 in brown and white rice food samples

We report simple and selective method for detection of vitamins B and B in brown and white rice samples using localized surface plasmon resonance (LSPR) of sucrose capped gold nanoparticles (AuNPs) as a chemical sensor colorimetrically. Here, detection is based on the color change of AuNPs from pink to blue followed by a red shift of LSPR absorption band in UV-vis region with the addition of vitamins B and B into the NPs solution A good linear range was observed in the range of 25-1000 ngmL with detection limit of 8 ngmL for B and 50-1000 ngmL with detection limit of 15 ngmL for vitamins B . The employment of AuNPs for detection of B and B vitamins in rice food samples showed remarkable abilities in terms of the simplicity, low cost, stability, reproducibility and sensitivity.