Related Experiment Video
Updated: Sep 17, 2025
10:09
Fabricating Reactive Surfaces with Brush-like and Crosslinked Films of Azlactone-Functionalized Block Co-Polymers
Published on: June 30, 2018
8.4K
Azodicarbonamide, Hydrogen Peroxide, and l-Ascorbic Acid Aid in the Modification of Protein Texture During
Aniket Kamboj1, Jana K Richter1, Chih-Ling Lee2
1School of Food Science, Washington State University, Pullman, Washington, USA.
Journal of Food Science
|July 3, 2025
Summary
Functional additives like azodicarbonamide (ADA), hydrogen peroxide (H2O2), and l-ascorbic acid (AA) impact wheat protein isolate texturization during high-moisture extrusion. Optimal concentrations enhance texture, while higher levels create porous structures, affecting meat analog properties.
Area of Science:
- Food Science
- Materials Science
- Biochemistry
Background:
- Protein texturization is key for high-moisture meat analogs (HMMA).
- Functional additives modulate protein structure during extrusion.
- The specific impact of additives like azodicarbonamide (ADA), hydrogen peroxide (H2O2), and l-ascorbic acid (AA) on HMMA texturization is not fully understood.
Purpose of the Study:
- To investigate the influence of ADA, H2O2, and AA on wheat protein isolate (WPI) texturization during high-moisture extrusion.
- To determine how varying concentrations of these additives affect protein texture, microstructure, and physicochemical properties.
- To understand the molecular mechanisms governing fibrous texture formation in plant-based meat analogs.
Main Methods:
- High-moisture extrusion of wheat protein isolate (WPI) with varying concentrations (0.1%-2.0%) of ADA, H2O2, and AA at 45% and 60% moisture levels.
- Analysis of extrudate texture (hardness, chewiness, cutting force), microstructure (SEM, CLSM), and physicochemical properties (color).
- Amino acid composition analysis using ninhydrin-based ion-exchange chromatography.
Main Results:
- Low additive concentrations (ADA, H2O2, AA) promoted protein cross-linking and aggregation, increasing hardness and chewiness.
- High additive concentrations led to disrupted protein networks, resulting in more porous and fragmented structures.
- Additive concentration significantly affected extrudate color; ADA increased brightness and yellowness, while H2O2 and AA had moderate effects.
- Minor modifications in proline and lysine content correlated with textural changes.
Conclusions:
- Thermally reactive and oxidative additives significantly influence protein cross-linking and aggregation during extrusion.
- These molecular changes are critical for controlling fibrous texture development in plant-based meat analogs.
- Potential residues of ADA and H2O2 necessitate further safety-focused quantification.
