Self-powered and dual-amplified photoelectrochemical sensing platform for highly sensitive detection of aflatoxin B1
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View abstract on PubMed
Summary
This summary is machine-generated.A new portable sensor detects Aflatoxin B1 (AFB1) rapidly and cost-effectively. This photoelectrochemical (PEC) sensor uses In(OH)3 and hybridization chain reaction (HCR) for reliable on-site AFB1 analysis.
Area Of Science
- Analytical Chemistry
- Biosensing Technology
- Materials Science
Background
- Aflatoxin B1 (AFB1) is a highly toxic contaminant in food, necessitating rapid detection methods.
- Current detection methods can be time-consuming and require specialized equipment, limiting on-site application.
Purpose Of The Study
- To develop a portable and sensitive photoelectrochemical (PEC) sensor for on-site detection of AFB1.
- To utilize In(OH)3 nanomaterials and a hybridization chain reaction (HCR) strategy for signal amplification.
Main Methods
- Fabrication of a screen-printed electrode modified with In(OH)3, gold nanoparticles, and capture probes.
- AFB1 detection via an HCR-triggered process involving methylene blue (MB) and ascorbic acid under illumination.
- Quantification of AFB1 by measuring the amplified PEC signal.
Main Results
- The developed PEC sensor demonstrated a linear detection range of 1-1000 ng/mL for AFB1.
- A low detection limit of 0.743 ng/mL was achieved, indicating high sensitivity.
- The sensor proved effective for on-site AFB1 detection.
Conclusions
- The In(OH)3/HCR/MB-based PEC sensor offers a promising platform for rapid, portable, and cost-effective AFB1 detection.
- This technology can significantly contribute to safeguarding public health by ensuring food safety.
- The sensor's design highlights the potential of integrated nanomaterials and molecular recognition for practical biosensing applications.
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