Related Experiment Video
Updated: Nov 1, 2025
08:22
Ultrasensitive Detection of Biomarkers by Using a Molecular Imprinting Based Capacitive Biosensor
Published on: February 16, 2018
12.3K
Specific recognition of protein by deep eutectic solvent-based magnetic β-cyclodextrin molecularly imprinted polymer
Xiyan He1, Yuzhi Wang2, Heqiong Li1
1State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, People's Republic of China.
Mikrochimica Acta
|June 17, 2021
Summary
A novel magnetic imprinted polymer, magnetic β-cyclodextrin (MCD) surface molecularly imprinted polymer (MCD@DES-MIP), was developed for selective bovine hemoglobin (BHb) capture. This material demonstrates high capacity and selectivity for BHb purification.
Area of Science:
- Materials Science
- Biochemistry
- Analytical Chemistry
Background:
- Developing selective and efficient materials for protein separation is crucial in biochemical analysis.
- Molecularly imprinted polymers (MIPs) offer tailored recognition capabilities for specific target molecules.
- Magnetic nanoparticles enhance material recovery and simplify separation processes.
Purpose of the Study:
- To synthesize and characterize a magnetic β-cyclodextrin surface molecularly imprinted polymer (MCD@DES-MIP) for the specific recognition and separation of bovine hemoglobin (BHb).
- To evaluate the adsorption properties, selectivity, and stability of the synthesized material for BHb purification.
Main Methods:
- Free radical polymerization was employed to synthesize magnetic imprinted microspheres using magnetic β-cyclodextrin (MCD) and deep eutectic solvents (DESs).
- Adsorption thermodynamics, kinetics, and pH control experiments were conducted to investigate the adsorption behavior.
- Competitive adsorption experiments with bovine serum albumin (BSA) and analysis of complex biological samples were performed to assess selectivity and practical applicability.
- Circular dichroism spectroscopy was used to confirm the structural integrity of BHb after elution.
Main Results:
- The MCD@DES-MIP exhibited a maximum adsorption capacity of 195.94 mg g⁻¹ for BHb with an imprinting factor of 4.68.
- The material demonstrated excellent selectivity for BHb over BSA in binary mixtures.
- Effective separation of BHb from complex biological samples was achieved.
- The secondary structure of BHb remained intact during the elution process, as confirmed by circular dichroism.
Conclusions:
- MCD@DES-MIP is a highly effective and selective adsorbent for the separation and purification of BHb.
- The use of DESs as functional monomers and cross-linkers in MIP synthesis is a promising approach.
- The developed material holds potential for applications in biochemical analysis and purification processes.
