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Detection of bisphenol A using palm-size NanoAptamer analyzer
Hyun Jeong Lim1, Beelee Chua2, Ahjeong Son1
1Department of Environmental Science and Engineering, Ewha Womans University, Seoul, Republic of Korea.
Biosensors & Bioelectronics
|February 27, 2017
Summary
A new palm-size NanoAptamer analyzer detects bisphenol A (BPA) at low ppb levels. This device uses aptamer-based fluorescence quenching for sensitive and rapid BPA analysis in environmental samples.
Area of Science:
- Environmental Science
- Analytical Chemistry
- Biotechnology
Background:
- Bisphenol A (BPA) is an endocrine-disrupting chemical found in the environment.
- Accurate detection of BPA at environmentally relevant concentrations is crucial for risk assessment.
- Existing detection methods can be complex and time-consuming.
Purpose of the Study:
- To develop and characterize a portable NanoAptamer analyzer for BPA detection.
- To assess the analyzer's performance using a modified NanoGene assay.
- To validate the analyzer's accuracy against established laboratory protocols.
Main Methods:
- A NanoAptamer analyzer was designed for single-cuvette reaction and fluorescence measurement.
- A modified NanoGene assay utilizing aptamer-DNA-quantum dot conjugates was employed.
- BPA detection was based on aptamer-BPA affinity leading to fluorescence quenching.
Main Results:
- The NanoAptamer analyzer successfully detected BPA at concentrations below 1 ng/mL (ppb).
- Optimization of incubation time, rinse cycles, and cuvette vibration was performed.
- High correlation was observed between the NanoAptamer analyzer and reference methods.
Conclusions:
- The palm-size NanoAptamer analyzer offers a sensitive and portable solution for BPA detection.
- The device demonstrates potential for rapid, on-site environmental monitoring of BPA.
- Further validation confirmed its reliability for quantifying BPA in environmental samples.
