Dual-function dextrin modulators in protein-rich matrices: Controlled aggregation for tailored fluid-gel transitions
Bowen Zou1, Junwei Zhang1, Xiaohan Zheng1
1School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; State Key Laboratory of Marine Food Processing & Safety Control, Dalian Polytechnic University, Dalian 116034, China; Liaoning Key Laboratory of Food Nutrition and Health, Dalian Polytechnic University, Dalian 116034, China; National Engineering Research Center of Seafood, China.
This study presents a method to control soy protein (SP) aggregation using preheating, beta-cyclodextrin (β-CD), and resistant dextrin (RD). These ingredients allow for tailored rheological properties in high-protein foods.
Area of Science:
- Food Science
- Protein Chemistry
- Materials Science
Background:
- High-protein (HP) foods are popular for nutritional value.
- Uncontrolled soy protein (SP) aggregation during thermal processing limits HP food applications.
Purpose of the Study:
- To develop a method for regulating SP aggregation and gel properties.
- To investigate the effects of beta-cyclodextrin (β-CD) and resistant dextrin (RD) on SP.
Main Methods:
- A preheating process combined with β-CD and RD.
- Conformational changes and interaction analysis.
- Rheological measurements (flow behavior index, storage modulus).
Main Results:
- β-CD inhibited SP aggregation by binding to hydrophobic regions, improving flowability (2.27-fold increase in flow behavior index).
- RD promoted SP aggregation by strengthening hydrophobic interactions, accelerating gelation and increasing storage modulus (138% increase).
Conclusions:
- β-CD and RD offer strategies to precisely control SP rheological and nutritional properties.
- This enables the development of diverse SP-based HP foods for various consumer demands.
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