Breakthrough in Nanotechnology: Silver Nanoparticles Detect Tartrazine in Candy Samples

A team of researchers at Gandhigram Rural Institute - Deemed to be University has made a significant breakthrough in the field of nanotechnology, developing a novel fluorescent sensor that can detect Tartrazine (TZ) in candy samples using spectrofluorimetry method. The researchers successfully synthesized Silver nanoparticles decorated Blue Carbon Dots-based Pectin films (AgNPs@BCDs/PN), which exhibited a limit of detection (LOD) of 21.02 nM within the range of 0-32 mM.

Key Takeaways:

• The researchers developed a unique fluorescent sensor using Silver nanoparticles decorated Blue Carbon Dots-based Pectin films (AgNPs@BCDs/PN) for the detection of Tartrazine (TZ) in candy samples.
• The sensor achieved a limit of detection (LOD) of 21.02 nM within the range of 0-32 mM, with recoveries and relative standard deviations of 94.11-99.42% and 1.61-1.91% respectively.
• The researchers used Photoinduced Electron Transfer (PET) and Surface state modulation for the sensing mechanism.
• The sensor detection was confirmed through spectrofluorimetry method.
• The synthesized AgNPs@BCDs were found to have particle sizes in the range of 12.5 to 23.8 nm.
• Blue Carbon Dots were prepared through hydrothermal treatment of Citric acid and Thiourea.

Statistics:

• Limit of detection (LOD): 21.02 nM
• Range of detection: 0-32 mM
• Recoveries: 94.11-99.42%
• Relative standard deviations: 1.61-1.91%
• Particle sizes of AgNPs@BCDs: 12.5 to 23.8 nm

Sources:

• "Silver nanoparticles decorated Blue Carbon Dots based Pectin films: A unique fluorescent sensor for the detection of Tartrazine in candy samples." Spectrochimica Acta Part A, 2025;340:126304.
• Gandhigram Rural Institute - Deemed to be University, Department of Chemistry, Gandhigram, Dindigul 624 302 Tamil Nadu, India.