Rheological characterization of galactomannans extracted from seeds of Caesalpinia pulcherrima

► Caesalpinia pulcherrima gum was extracted from legume endosperms of C. pulcherrima L. ► Steady shear and dynamic viscoelastic properties were studied. ► The rate of entanglement of the polymer is dependent on concentration of the polymer and exhibits shear thinning nonNewtonian behavior. ► The rheological characteristics of the galactomannan demonstrated the suitability of gum as a viscosity modifier in food industry as well as in pharmaceutical industry.