Nanomechanical Characterization of Food Biopolymer Systems

Food biopolymers such as proteins, polysaccharides and hydrogel networks exhibit complex hierarchical structures that govern texture, stability and mouthfeel. Nanomechanical characterization probes the mechanical properties of these materials at length scales from nanometres to micrometres, providing insights into molecular interactions, network connectivity and phase behaviour. Techniques including atomic force microscopy, nanoindentation and internal friction measurements enable quantification of local stiffness, elasticity and viscoelastic dissipation with high spatial resolution. By linking microstructural motifs—such as crosslink density, hydration shell dynamics and colloidal interactions—to bulk functional properties, researchers can tailor biopolymer formulations for controlled gelation, emulsion stability and targeted release of nutrients or bioactives. Advances in instrumentation, data‐analysis models and multifunctional probes have extended the range of measurable forces and deformations, facilitating the design of next-generation food systems with improved sensory attributes and shelf stability.

Research from Nature Portfolio

No recent Nature Portfolio content available.

Nanomechanical Characterization of Food Biopolymer Systems publication trend

The graph below shows the total number of articles in nanomechanical characterization of food biopolymer systems across all publications each year (not limited to Nature Index journals).

Technical terms

Biopolymer: A polymeric material of biological origin, such as proteins or polysaccharides, forming networks in food systems.

Atomic force microscopy: A high-resolution technique using a nanoscale probe to measure surface topography and mechanical forces.

Scanning force microscopy: A mode of atomic force microscopy focused on quantifying mechanical interactions between probe and sample.

Nanoindentation: Localised indentation at nanometre scales to assess material stiffness and elastic response.

Young’s modulus: A measure of material stiffness defined as the ratio of stress to strain in the elastic regime.

Internal friction: Dissipative energy loss within a material under oscillatory deformation, indicative of microstructural dynamics.

References

1. Getting the feel of food structure with atomic force microscopy. Food Hydrocolloids (2018).
2. The use of internal friction measurements for the study of ultra- and nanofiltration of modified curd whey. Proceedings of the Voronezh State University of Engineering Technologies (2019).
3. Nanodeformations of microcapsules: comparing the effects of cross-linking and nanoparticles. RSC Advances (2022).