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Clenbuterol Assay by Spectral Imaging Surface Plasmon Resonance Biosensor System
Yichuan Wu1, Manwen Yao1, Xiangyi Fang2
1Functional Materials Research Laboratory, Tongji University, Shanghai, People's Republic of China.
Applied Biochemistry and Biotechnology
|August 31, 2015
Summary
New sensor methods efficiently detect clenbuterol, a banned substance. These rapid, label-free techniques enhance food safety and prevent illegal clenbuterol use.
Area of Science:
- Analytical Chemistry
- Biosensing Technology
Background:
- Clenbuterol (CLE) is a banned substance with illegal applications in food production.
- Current detection methods for CLE lack efficiency and reliability.
- There is a need for advanced analytical techniques for accurate CLE detection.
Purpose of the Study:
- To develop and validate novel methods for sensitive and specific clenbuterol detection.
- To utilize a spectral imaging surface plasmon resonance (SI-SPR) sensor system for CLE analysis.
- To compare two distinct inhibition assay formats for clenbuterol detection.
Main Methods:
- Implemented two inhibition-based detection strategies using a SI-SPR sensor system.
- Method 1: Target site compensation using immobilized anti-clenbuterol antibody.
- Method 2: Solution competition using immobilized clenbuterol-bovine serum albumin (BSA) conjugate.
Main Results:
- Both methods demonstrated a detectable concentration range of 6.25–100 μg/mL for clenbuterol.
- The limit of detection (LOD) for the target site compensation method was 6.7 μg/mL.
- The LOD for the solution competition method was 4.5 μg/mL, indicating higher sensitivity.
Conclusions:
- The developed SI-SPR sensor methods provide efficient, reliable, and label-free detection of clenbuterol.
- The methods exhibit high specificity, high-throughput, and operational convenience.
- These advancements support quality control in the food industry and combat illegal clenbuterol usage.
