A mixture of polysaccharides and proteins can also be unstable when associative interactions are operational. In that case the polysaccharides adsorb onto the protein surfaces. If the amount of polymer is not large enough to completely cover the protein, a polysaccharide may adsorb onto more than one protein surface, thereby bridging two or more protein particles. Such a process is also called complex coacervation, denoted as such by Bungenberg de Jong (1949). In summary, polysaccharides either adsorb onto proteins or induce effective attractions between the protein/colloidal particles.