Wikipedia Article About Guar gum on Wikipedia Guar gum, a natural gum, is an edible thickening agent extracted from the guar bean (Cyamopsis tetragonoloba). Guar gum is a cold water soluble polysaccharide, consisting of mannose and galactose units. This ability to hydrate without heating makes it very useful in many industrial and food applications. Solutions with different gum concentrations can be used as emulsifiers and stabilizers because they prevent oil droplets from coalescing. Guar gum is also used as suspension stabilizer.