DOAJ Open Access 2025

A rapid, multiplexed, and naked-eye-readable paper assay for detecting heavy metal pollution in food using a catalytic colorimetric reaction

Ying Huang Jianwei Wu Wenping Yang Qilin Qiu Qin Liu +4 lainnya

Abstrak

ABSTRACT: Heavy metal contamination is a serious food safety issue. Herein, we report a rapid, multiplexed, and naked-eye-readable method for detecting heavy metal pollution in food samples, including milk, using an inexpensive colorimetric paper. We leverage the urease catalysis reaction to amplify the presence of the heavy metal ions Hg2+ and Pb2+ by exploiting their strong inhibitory effect on urease. Integrating with a paper-folding strategy, the visual assay realizes rapid detection of over 10 samples within 5 min. It allowed detection of Hg2+ as low as 0.1 nM and Pb2+ as low as 2 μM. Results can be visually interpreted with the naked eye or a smartphone, making it practical for on-site testing and ensuring the safety of dairy products against metal contamination.

Topik & Kata Kunci

Dairy processing. Dairy products Dairying

Penulis (9)

Ying Huang

Jianwei Wu

Wenping Yang

Qilin Qiu

Qin Liu

Jie Li

Jiangwei Wen

Wenbo Cheng

Xuhan Xia

Format Sitasi

APA MLA BibTeX

Huang, Y., Wu, J., Yang, W., Qiu, Q., Liu, Q., Li, J. et al. (2025). A rapid, multiplexed, and naked-eye-readable paper assay for detecting heavy metal pollution in food using a catalytic colorimetric reaction. https://doi.org/10.3168/jds.2024-25838

Akses Cepat

PDF tidak tersedia langsung

Cek di sumber asli →

Lihat di Sumber doi.org/10.3168/jds.2024-25838

Informasi Jurnal

Tahun Terbit: 2025
Sumber Database: DOAJ
DOI: 10.3168/jds.2024-25838
Akses: Open Access ✓