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Updated: Sep 9, 2025
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In vitro Digestion of Emulsions in a Single Droplet via Multi Subphase Exchange of Simulated Gastrointestinal Fluids
Published on: November 18, 2022
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Research on Fatty Acid Demulsification Technology and Mechanism of Peanut OBs
Chen Liu1,2, Fusheng Chen2
1College of Biology and Food, Shangqiu Normal University.
Journal of Oleo Science
|August 31, 2025
Summary
Octanoic acid effectively demulsifies peanut oil bodies (OBs) using an aqueous enzymatic method. This process destabilizes OBs by altering protein structure and surface charge, enabling efficient peanut oil extraction.
Area of Science:
- Food Science
- Biochemistry
- Chemical Engineering
Background:
- Peanut oil bodies (OBs) are complex emulsions requiring efficient demulsification for extraction.
- Aqueous enzymatic methods offer a sustainable route for oil extraction but face demulsification challenges.
Purpose of the Study:
- To optimize fatty acid-mediated demulsification of peanut OBs.
- To elucidate the mechanism underlying fatty acid-induced OB destabilization.
- To assess the efficiency of octanoic acid for peanut oil extraction.
Main Methods:
- Screening various fatty acids for demulsification efficacy.
- Optimizing demulsification process parameters.
- Analyzing protein structural changes using fluorescence spectroscopy.
- Investigating interfacial membrane integrity.
Main Results:
- Octanoic acid demonstrated the highest demulsification efficiency (98.23%).
- Octanoic acid induced oil droplet aggregation by neutralizing surface charge at the isoelectric point (pI).
- Protein unfolding and interfacial membrane disruption were observed, leading to OB destabilization.
Conclusions:
- Octanoic acid is a highly efficient demulsifier for peanut OBs.
- The study provides a theoretical foundation for industrializing peanut oil extraction via aqueous enzymatic methods.
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