The intermolecular interactions between the bovine serum albumin (BSA) and cress seed gum (CSG) were investigated by rheological characterization as a function of pH (7.0- 2.0), and concentrations of BSA (0.1, 0.5 and 1%, w/w) and CSG (0.01, 0.05 and 0.1%, w/w). Dominant storage modulus (G\\\\\\\\\\\\\\\') over loss modulus (G\\\\\\\\\\\\\\\") demonstrated the formation of a weak gel-like structure. Moreover, the complex viscosity (η*) of the complex coacervate decreased linearly in a small range of frequency (0.1-10), implying the shear-thinning behavior of the coacervates. These results reflect that CSG-BSA complex coacervate could be a suitable biopolymer carrier for sensitive and bioactive compounds.

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