ArticleFood chemistry: X2026
Effect of extrusion parameters and feed composition on physical characteristics, aroma profile and acrylamide content in pea protein-enriched corn extrudates.
Article in Food chemistry: X, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Low-moisture extrusion is gaining relevance for high-protein snacks, yet its effect on product quality and safety remain insufficiently understood. In this study, the effects of pea protein isolate content (0-70%), moisture (15-17%), and extrusion parameters, including screw speed (400-500 rpm) and barrel temperature (up to 145-160 °C) were studied using a twin-screw extruder. Product characteristics were evaluated in terms of bulk density, dimensions, texture, colour, and aroma profile while acrylamide levels were quantified to assess safety. Feed composition had a greater influence than extrusion parameters. Among the investigated processing conditions, formulations containing up to 50% pea protein represented a practical optimum, providing relatively better physical properties and enhanced aroma formation while maintaining low acrylamide levels, whereas higher protein incorporation (70%) led to pronounced and less desirable changes. Overall, low-moisture extrusion is promising for high-protein snacks with low acrylamide risk.
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