Effects of SDS on the sol–gel transition of konjac glucomannan in SDS aqueous solutions

The interaction between konjac glucomannan (KGM) and an anionic surfactant, sodium dodecyl sulfate (SDS) is studied by rheological, circular dichroism (CD), conductivity, electron spin resonance (ESR), and FT-IR measurements. Since KGM is a neutral polysaccharide and has no significant hydrophobic side groups, the critical micelle concentration value of SDS is not influenced with the addition of KGM, and no marked binding occurs between them....