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2. Temporal control of xyloglucan self-assembly into layered structures by radiation-induced degradation

Author

Maria Antonietta Sabatino, Clelia Dispenza, Donatella Bulone, Maria Laura Di Giacinto, Simona Todaro, Maria Rosalia Mangione, Pasquale Picone, Todaro, S., Sabatino, M., Mangione, M., Picone, P., Di Giacinto, M., Bulone, D., and Dispenza, C.

Subjects
Materials Chemistry2506 Metals and Alloys, Time Factors, Materials science, Morphology (linguistics), Polymers and Plastics, Cell Survival, 02 engineering and technology, engineering.material, 010402 general chemistry, 01 natural sciences, Polymerization, Neuroblastoma, chemistry.chemical_compound, Biopolymers, Dynamic light scattering, Cell Line, Tumor, Materials Testing, Spectroscopy, Fourier Transform Infrared, Materials Chemistry, Humans, High energy-irradiation, Composite material, Fourier transform infrared spectroscopy, Xyloglucan, Glucans, Polymers and Plastic, Viscosity, Medicine (all), Organic Chemistry, Temperature, Hydrogels, Self-assembly, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Hydrogel, Membrane, chemistry, Chemical engineering, Gamma Rays, Self-healing hydrogels, engineering, Xylans, Thermoresponsive biopolymer, Biopolymer, Shear Strength, 0210 nano-technology
Abstract

Partially degalactosylated xyloglucan from tamarind seeds (Deg-XG) is a very appealing biopolymer for the production of in situ gelling systems at physiological temperature. In this work, we observe that the morphology of hydrogels evolves towards high degrees of structural organization with time, yielding to dense stacks of thin membranes within 24 h of incubation at 37 °C. We also explore the possibility offered by gamma irradiation of controlling the time scale of this phenomenon, the final morphology and mechanical properties of the system. Structural and molecular modifications of Deg-XG with dose are investigated by FTIR, dynamic light scattering (DLS) and rotational viscosimetry. The impact on gelation ability and gel strength is studied by rheological analysis. The morphology evolution is investigated by SEM analysis, and absence of cytotoxicity verified by MTS assay and optical microscopy of neuroblastoma cells.

Published
2016

3. Temporal control of xyloglucan self-assembly into layered structures by radiation-induced degradation.

Author

Todaro S, Sabatino MA, Mangione MR, Picone P, Di Giacinto ML, Bulone D, and Dispenza C

Subjects
Cell Line, Tumor, Cell Survival drug effects, Glucans chemical synthesis, Glucans radiation effects, Humans, Hydrogels chemistry, Materials Testing, Neuroblastoma pathology, Polymerization radiation effects, Shear Strength, Spectroscopy, Fourier Transform Infrared, Temperature, Time Factors, Viscosity, Xylans chemical synthesis, Xylans radiation effects, Biopolymers chemistry, Biopolymers pharmacokinetics, Biopolymers radiation effects, Gamma Rays, Glucans chemistry, Glucans pharmacokinetics, Hydrogels chemical synthesis, Hydrogels pharmacokinetics, Xylans chemistry, Xylans pharmacokinetics
Abstract

Partially degalactosylated xyloglucan from tamarind seeds (Deg-XG) is a very appealing biopolymer for the production of in situ gelling systems at physiological temperature. In this work, we observe that the morphology of hydrogels evolves towards high degrees of structural organization with time, yielding to dense stacks of thin membranes within 24h of incubation at 37°C. We also explore the possibility offered by gamma irradiation of controlling the time scale of this phenomenon, the final morphology and mechanical properties of the system. Structural and molecular modifications of Deg-XG with dose are investigated by FTIR, dynamic light scattering (DLS) and rotational viscosimetry. The impact on gelation ability and gel strength is studied by rheological analysis. The morphology evolution is investigated by SEM analysis, and absence of cytotoxicity verified by MTS assay and optical microscopy of neuroblastoma cells., (Copyright © 2016 Elsevier Ltd. All rights reserved.)

Published
2016
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