Physical properties and applications of aqueous solutions of Albizia zygia gum

Abstract

Some physical properties of aqueous solutions of African Albizia zygia (D.C.) Macbride have been evaluated. Approximately 80 % of the gum is soluble in the cold with the remainder dispersed as fine particles of gel. pH titration of the gum indicates one acid group, pK, = 3.8, for every three monosaccharide units. Solutions of the gum exhibit typical polyelectrolyte behaviour. The viscosity of the solutions increases with concentration but above 1.5 % the solutions exhibit shear-thinning. The viscosity of an ice cream mix containing the gum and the properties of the resultant ice cream are compared with standard mixes.

Fractionation and some physicochemical properties of almond gum (Amygdalus communis L.) exudates

“…As mentioned earlier, the higher the amount of the soluble fraction in a gum, the higher is the quality of the gum. The insoluble fractions of albizia amara, albizia harveyi, and albizia zygia are reportedly around 20% w/w (Ashton, Jefferies, Morley, Pass, Phillips, & Power, 1975;Mhinzi, 2002). This may be compared with the insoluble fraction of Tanzanian Acacia gum which is around 10.9% w/w.…”

Flavonoids from Sudanese <i>Albizia zygia</i> (Leguminosae, Subfamily Mimosoideae), a Plant with Antimalarial Potency

“…Also, the gum of the plant has been widely investigated for its chemical and physical properties (e.g. as thickening agent) in comparison with other mucilages (Ashton et al, 1975;Mital et al, 1979). In traditional medicine, the powdered bark of A. zygia is used alone or as a decoction in southern Sudan as an antimalarial and antiparasitic drug.…”

Recently Investigated Natural Gums and Mucilages as Pharmaceutical Excipients: An Overview

“…It consists of β -1-3-linked D galactose units with some ß1-6-linked D-galactose units. Albizia gum has been investigated as a possible substitute for gum arabic as a natural emulsifier for food and pharmaceuticals [17, 18]. These gums were tried as coating materials in compression-coated tablets, which degraded, by the colonic microflora, thereby releasing the drug [19].…”