Composition and properties of Albizia lebbeck gum exudate.
An analytical study has been made of six gum specimens from Albizia lebbeck. Galactose, mannose, arabinose, glucuronic acid and its 4-0-α-methyl analogue were present in all the specimens studied. Rhamnose was not detected according to sugar analysis and spectral data. The absence of this sugar, the high acidity and the relatively low limit viscosity number contrast with the values reported previously for one African sample of A. lebbeck. The lead content is much higher than that recorded for other Albizia gums. The 13C-NMR spectrum of this gum, in deuterium oxide, showed good resolution.