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- Schefer, Larissa, et al. Show all 6 Authors
- Biomacromolecules 2019 v.20 no.4 pp. 1731-1739
- X-ray scattering; anisotropy; atomic force microscopy; biopolymers; gelation; gellan gum; hydrogels; ions; iota-carrageenan; kappa carrageenan; lambda-carrageenan; models; potassium; potassium chloride; proteins; sodium; spectroscopy; statistical analysis; uncertainty
- ... Polysaccharides are ubiquitous in nature and represent an essential class of biopolymers with multiple levels of conformation and structural hierarchy. However, a standardized structural nomenclature, as in the case of proteins, is still lacking due to uncertainty on their hierarchical organization. In this work we use carrageenans as model polysaccharides to demonstrate that several structural le ...
- Schefer, Larissa, et al. Show all 3 Authors
- Biomacromolecules 2015 v.16 no.3 pp. 985-991
- atomic force microscopy; electrolytes; ionic strength; kappa carrageenan; models; physics; polymers; screening; sodium; sodium chloride; statistical analysis
- ... The macromolecular conformations of anionic polysaccharides with decreasing linear charge densities − lambda, iota, and kappa carrageenan −, at varying NaCl concentrations, are studied by single-chain statistical analysis of high-resolution atomic force microscopy (AFM) images. Lambda remains in the random coil conformation, whereas iota and kappa undergo ion-induced coil–helix transitions, with a ...