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Cholesterol removal by selected metal-organic frameworks as adsorbents
Emin Yilmaz1, Ezgi Şenel1, Selçuk Ok1
1Department of Food Engineering, Faculty of Engineering, Çanakkale Onsekiz Mart University, 17020 Çanakkale, Turkey.
Journal of Food Science and Technology
|January 25, 2020
Summary
Metal-organic frameworks (MOF) show potential for selective cholesterol removal from oils. Aluminum-MOF and titanium-MOF effectively reduced cholesterol, outperforming other adsorbents but not β-cyclodextrin complexation.
Area of Science:
- Materials Science
- Food Chemistry
- Adsorption Technology
Background:
- Cholesterol reduction in oils is crucial for health and food processing.
- Existing methods for cholesterol removal have limitations.
- Metal-organic frameworks (MOFs) offer tunable properties for adsorption applications.
Purpose of the Study:
- To evaluate the cholesterol removal capacity of seven MOFs.
- To compare MOF performance against activated carbon and β-cyclodextrin complexation.
- To investigate the influence of MOF parameters on cholesterol adsorption.
Main Methods:
- Screening of seven MOFs for cholesterol adsorption from oil.
- Comparative analysis with activated carbon and β-cyclodextrin.
- Optimization of MOF treatment conditions (adsorbent level, time, temperature).
- Analysis of oil quality parameters (free fatty acids, peroxide value).
Main Results:
- Aluminum-MOF (Al-MOF) and titanium-MOF (Ti-MOF) demonstrated significant cholesterol reduction (27.45% and 26.27%).
- MOFs showed lower free fatty acid and peroxide values compared to control.
- Optimal conditions for Al-MOF and Ti-MOF included 3.0% adsorbent level and 180 min treatment time at 50°C.
- Al-MOF proved effective in butter and sheep tail tallow.
Conclusions:
- MOFs, particularly Al-MOF and Ti-MOF, are effective adsorbents for selective cholesterol removal from oils.
- MOF adsorption offers advantages in maintaining oil quality.
- MOFs present a promising alternative for cholesterol reduction in food applications.
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