Identification of acetaldehyde based on plasmonic patterns of a gold nanostructure conjugated with chromophore and H(2)O(2): a new platform for the rapid and low-cost analysis of carcinogenic agents by colorimetric affordable test strip (CATS)

Overview

Farshchi and colleagues developed a colorimetric affordable test strip (CATS) based on gold nanoflowers (AuNFs) functionalized with cysteamine for the detection of acetaldehyde, an IARC Group 1 carcinogen generated during fermentation. Gold nanoflowers catalyze TMB oxidation by H2O2 and the color response is modulated by acetaldehyde; gold is the analytical reagent, not the food contaminant. The test strip format enables phone-camera readout without laboratory equipment.

Key numbers

LOD: 0.1 µM acetaldehyde. Linear range: 0.1 to 17.33 µM. Validated in urine samples; fermented food and environmental water are stated application domains.

Implications for the wiki

This paper contributes to Gold as documentation of AuNP-based sensing platforms applied to carcinogen monitoring in food matrices. No food occurrence data for gold or any heavy metal are provided.

Related evidence

• Gold

Update history

No substantive edit history is available in this build. The full commit record is available in git.