Work

Sub- or Supercritical CO 2 -Assisted Melting Point Depression of Free Fatty Acids and Triglycerides for Microencapsulation Processes in Sustainable Veterinary Applications

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide The process based on the particles from gas-saturated solutions (PGSS) using supercritical fluids offers a green alternative to conventional lipid-based encapsulation methods, which typically require higher thermal energy. This study presents experimental data including onset (first melting), completion (last melting), and freezing temperatures for the binary system formed by fatty acids and carbon dioxide at pressures range from 5 to 35 MPa. The results revealed notable melting point depressions across all tested compounds, with the greatest depression observed for myristic acid (Δ T = 16.36 K) at approximately 15 MPa. The completion (last melting) depression data were modeled by the means of the Peng–Robinson equation of state involving van der Waals mixing rule showing good agreement and providing understanding about the thermodynamic behavior of binary systems of fatty acids and triglycerides under pressurized carbon dioxide.

Source: ACS Omega

DOI: 10.1021/acsomega.5c08084

Authors: Gurbuz Comak, Sedra Jrab

Institution: Mersin Üniversitesi

Language: English

Topic: Phase Equilibria and Thermodynamics

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Climate action

Open Access status: gold

Estimated APC paid: $1,935