Abstract
AbstractThis paper deals with the ester‐ester interchange reaction using an immobilized lipase (Lipozyme TL IM) as biocatalyst and sodium methoxide as a chemical catalyst for incorporating oxygenated FA such as 12‐hydroxyoleic, 12‐hydroxystearic, and 12‐epoxyoleic in soy phospholipids. As much as 65% hydroxyoleic acid, 57% hydroxystearic acid, and 43% epoxyoleic acid were incorporated in soy phospholipid with lipase. The corresponding incorporations of these acids were 51, 49, and 35%, respectively, by using the chemical catalyst. Interface properties such as critical micelle concentration (CMC), effectiveness of interfacial tension reduction (γCMC), maximum surface excess concentration (Γmax), and minimum area/molecule at the interface (Amin) of the modified products were measured and found to be different from those of the original soy phospholipids.
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