Characterization of two Acacia gums and their fractions using a Langmuir film balance

The mechanical properties of monolayers from two Acacia gums [Acacia senega l (L.) Willd. and Acacia seyal Del.] and their three fractions isolated by hydrophobic interaction chromatography were studied with a Langmuir film ba lance to obtain a more complete understanding of their action mode. The ana lysis of compression isotherms revealed that A. senegal gums globally exhib it better interfacial properties than A. seyal ones. The behavior of the wh ole gums appeared to be strongly influenced by their arabinogalactan-protei n complex.