Premium
Preparation and surface‐active properties of hydroxy and epoxy fatty acid‐containing soy phospholipids
Author(s) -
Das Soma,
Bhattacharyya D. K.
Publication year - 2006
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-006-5156-1
Subject(s) - lipase , sodium methoxide , chemistry , critical micelle concentration , catalysis , soy protein , organic chemistry , surface tension , phospholipid , fatty acid , micelle , chromatography , enzyme , biochemistry , membrane , aqueous solution , physics , quantum mechanics
This 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 (γ CMC ), maximum surface excess concentration (Γ max ), and minimum area/molecule at the interface ( A min ) of the modified products were measured and found to be different from those of the original soy phospholipids.