Journal: Journal of Materials Science. Materials in Medicine

Article Title: Tunable soy protein isolate hydrogel for nanoparticles brain release

doi: 10.1007/s10856-026-07072-9

Figure Lengend Snippet: The hydrogels were prepared in a Petri dish and then freeze-dried, before undergoing scanning electron microscopy (SEM) analysis using a TESCAN Mira 3 XMU microscope (TESCAN ORSAY HOLDING s.a., Czech Republic) equipped with a field emission source, operated at 5 kV using its In-Beam SE (secondary electrons) model. Images were acquired at multiple magnifications. a Representative images of the 10% w/v SPI, 20 mg MTGase/g SPI hydrogels are shown. b Representative images of the 10% w/v SPI, 40 mg MTGase/g SPI hydrogels are shown. Scale bars are embedded in the images. c – e Rheological characterization of SPI hydrogels. Hydrogel physical and mechanical properties were characterized through rheological tests on a rotational rheometer. c The amplitude sweep test evaluates the hydrogel’s mechanical properties by applying progressively increasing deformation. The resulting elastic (Storage) modulus (G′) and viscous (Loss) modulus (G″) curves are obtained under controlled shear strain. Brain tissue G′ interval (0.1–1 kPa) is highlighted. d The steady-state flow test revealed pronounced shear-thinning behavior. e A frequency sweep test was performed to assess how the hydrogel responds to constant deformation at increasing frequencies. Data are presented as the mean ± SD of at least three replicates

Article Snippet: The hydrogels were prepared in a Petri dish and then freeze-dried, before undergoing scanning electron microscopy (SEM) analysis using a TESCAN Mira 3 XMU microscope (TESCAN ORSAY HOLDING s.a., Czech Republic) equipped with a field emission source, operated at 5 kV using its In-Beam SE (secondary electrons) model.

Techniques: Electron Microscopy, Microscopy, Shear