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XANTHAN GUM1] Description: Exocellular heteropolysaccharide produced by fermentation. Exhibits pseudoplastic behavior in solution (i.e. high viscosity at rest, viscosity decreases with increasing shear rates, and instantly returns as shear is reduced or removed). Higher degree of pseudoplasticity than other commercial hydrocolloids.
Viscosity is maintained over a wide pH range (pH 2 to 12). Compatible with most common acids, and most basic compounds.
pH increases in the presence of soluble multivalent cations, which can cause cross-linking to an insoluble gel.
Viscosity increases in the presence of a salt, including divalent metal salts such as calcium and magnesium.
2] Physical Characteristics:
CPKelco Xantural® Grades 180, 75, 11k, EP, JPE, USP/NF
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Xantural Family of Xanthan Gum Products for Pharmaceutical Application rev.10/99, Kelco Biopolymers