guar gum is galactomannan that is removed from the seed of the leguminous shrub cyamopsis tetragonoloba. The plant is indigenous to this semi - arid area of western india, which produces 70 % of guar in the world. it is colloidal in nature,has ability to rapidly hydrate in cold water, and attain uniform viscosity at relatively low concentrations, makes it useful as a thickening & binding agent.