Functional Magnetic Nanoparticles for Highly Efficient Cholesterol Removal

Area of Science:

• Materials Science
• Nanotechnology
• Food Chemistry

Background:

• Cholesterol removal from food products is crucial for health and processing.
• Developing efficient and reusable adsorbents is a key challenge in food purification.

Purpose of the Study:

• To synthesize and characterize magnetic nanoparticles functionalized with carboxylated β-cyclodextrin (Fe₃O₄@CM-β-CD).
• To evaluate the efficiency of Fe₃O₄@CM-β-CD nanoparticles for cholesterol removal from milk and egg yolk.
• To investigate the adsorption mechanism and reusability of the synthesized nanoparticles.

Main Methods:

• Synthesis of Fe₃O₄ nanoparticles and functionalization with CM-β-CD.
• Characterization using FTIR, XPS, TGA, XRD, and TEM.
• Adsorption isotherm and kinetic studies for cholesterol removal.
• Evaluation of cholesterol removal from milk and egg yolk, including saponified samples.

Main Results:

• Successful conjugation of CM-β-CD onto Fe₃O₄ nanoparticles with 9.164% loading.
• Fe₃O₄@CM-β-CD nanoparticles maintained Fe₃O₄ phase and had an average size of 15 nm.
• Adsorption followed Langmuir model and pseudo-first-order kinetics, indicating enhanced cholesterol removal.
• High cholesterol removal efficiency (98.8% from milk, 94.6% from egg yolk) achieved in 1 hour.
• Nanoparticles showed efficient removal after 6 reuse cycles.

Conclusions:

• Fe₃O₄@CM-β-CD nanoparticles are effective adsorbents for cholesterol removal from milk and egg yolk.
• Saponification enhances cholesterol removal efficiency.
• The developed magnetic nanoparticles offer a promising, reusable solution for cholesterol reduction in food products.