Related Experiment Video
Updated: Aug 7, 2025
06:59
Environmental Dynamic Mechanical Analysis to Predict the Softening Behavior of Neural Implants
Published on: March 1, 2019
7.8K
Strain-dependent assessment of dough's polymer structure and functionality during the baking process.
Thekla Alpers1, Thomas Becker1, Mario Jekle2
1Research Group Cereal Technology and Process Engineering, Chair of Brewing and Beverage Technology, Technical University of Munich, Freising, Germany.
Plos One
|March 7, 2023
Summary
This study reveals how dough structure impacts baking. Different dough types and strains show that gluten functionality is key during baking, affecting oven rise and dough degradation.
Area of Science:
- Food Science
- Materials Science
- Rheology
Background:
- Dough functionality changes during baking due to polymer conformational transitions.
- Thermally induced structural changes impact polymer involvement and dough matrix properties.
Purpose of the Study:
- To investigate how different deformation types and magnitudes reveal structural information in wheat dough.
- To differentiate the functionality of standard and aerated yeasted wheat doughs under varying strains.
- To link rheological properties to oven rise behavior and dough degradation during baking.
Main Methods:
- Small Amplitude Oscillatory Shear (SAOS) rheology in multiwave mode.
- Large deformation extensional rheometry.
- Laser Scanning (LSF) technique for inline fermentation and baking analysis.
Main Results:
- Starch functionality dominated dough behavior under SAOS rheology, while gluten functionality prevailed in large deformation tests.
- Heat-induced gluten polymerization increased strain hardening above 70°C.
- Aerated dough showed early strain hardening due to gas cell expansion; degradation occurred beyond maximal gas holding capacity.
- Yeast fermentation and thermal treatment significantly impact wheat dough strain hardening.
- Decreased connectivity and early strain hardening in yeasted dough correlated with limited oven rise around 60°C.
Conclusions:
- Rheological measurements effectively probe different structural levels and interactions within dough matrices.
- Gluten network development and its response to strain are critical for dough performance during baking.
- Understanding dough rheology provides insights into baking processes, including oven rise and potential degradation issues.
Related Concept Videos
01:21Polymer Classification: Crystallinity
2.9K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
2.9K
01:22Problem Solving on Stress and Strain
1.1K
Stress is a quantity that describes the magnitude of a force that causes deformation, generally defined as internal force per unit area. When forces pull on an object and cause its elongation, like the stretching of an elastic band, it is called tensile stress. When forces cause the compression of an object, it is known as compressive stress. When an object is being squeezed uniformly from all sides, like a submarine in the depths of the ocean, we call this kind of stress bulk stress (or volume...
1.1K
01:26Polymer Classification: Stereospecificity
2.5K
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
2.5K
01:17Studying the Cytoskeleton
6.4K
The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...
6.4K
01:18Residual Stresses in Bending
220
In the study of elastoplastic members subjected to bending moments, understanding the loading and unloading phases is crucial for assessing material behavior and structural integrity. During the loading phase, as the bending moment increases, the material initially responds elastically, adhering to Hooke's Law, where stress is directly proportional to strain. When the load exceeds the yield strength, plastic deformation occurs, resulting in permanent strain and deformation that remains even...
220