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Cold Plasma-Treated Chickpea Protein Isolate: Effects on Rheological Behavior and Quality Characteristics of
Jiayu Sun1, Jian Wang1, Zimo Wen1
1State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, College of Food Science and Engineering, Ningbo University, Ningbo 315832, China.
Abstract:
Allergen-free (AF) baked goods usually show inferior texture and mouth-feel due to lack of functional proteins. This study evaluated the quality characteristics of AF muffins incorporated with three different sources of chickpea protein isolate (CPI), including commercial CPI, laboratory CPI, and cold plasma-modified laboratory CPI at varying addition levels (5%, 10%, and 15%). Results indicate that commercially available CPI exhibits high viscoelasticity in whole wheat muffin batter due to mixed protein types and severe denaturation, but the finished muffins are excessively hard with insufficient elasticity. Adding 15% laboratory CPI treated with cold plasma significantly enhanced the viscoelasticity of the muffin batter. The final product achieved a volume of 99.43 cm3, representing a 20.1% increase compared to the protein-free control group. This resulted in a superior product with enhanced elasticity, moderate hardness, and improved color. This study confirms that cold plasma modification technology effectively unlocks the structural and functional potential of chickpea protein in AF baking systems, offering an innovative solution for developing high-quality, high-protein AF foods. Future research will focus on the industrial scalability of this technology, product sensory characteristics, and shelf-life evaluation.
