Abstract
Tetramethyl ammonium (TMA) gellan does not gel. Light scattering studies suggest that in solutions of TMA gellan, in tetramethyl ammonium chloride (TMACI), the gellan molecules assemble end to end to produce elongated fibrous structures. Such fibrils are envisaged as resulting from double-helix formation between the ends of neighbouring gellan molecules. Fibrils with molecular weights ranging from (1.06 ± 0.06) × 10 5 to (4.5 ± 0.1) × 10 6 have been observed. The molecular weights obtained depended upon the pore size of the filters used to clarify the solutions. The formation of strong gels, in the presence of gel promoting cations, is attributed to a localized ordered lateral association, or crystallization of regions of these fibrils. It is suggested that such a model for gelation may be of general applicability to a number of polysaccharide systems.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Biological Macromolecules
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
