Physicochemical and hydration properties of different cereal and legume gluten‐free powders

Nohed Boucheham 1 Laurence Galet 2 Severine Patry 2 Mohammed Nasreddin Zidoune 1
1 INATAA - Institut de la nutrition, de l'alimentation et des technologies agro-alimentaires
2 RAPSODEE - Centre de recherche d'Albi en génie des procédés des solides divisés, de l'énergie et de l'environnement
Abstract : Background: The wetting and hydration stage is the key step in manufacture process of several cereal-based products. Knowledge of hydration properties of gluten-free ingredients can contribute to improve the quality of gluten-free products. The objec-tive of the present work was to investigate hydration properties for a large variety of gluten-free ingredients. Powders of tow gluten-free cereals (rice and maize) and powders of tow legumes (chickpea and faba bean) in comparison with durum wheat semolina. The hydration properties were evaluated at 25°C by vapor and liquid water addition. Results : Legume powders had the highest sorption capacity and stronger interaction with vapor water. Rice showed the highest vapor water diffusion at all RH intervals. Water holding capacity, swelling kinetics, and immersion enthalpy in liquid water were higher for legume and maize powders. Conclusion : Gluten-free cereal powders show hydration properties different from those of legumes. Different combinations of these gluten-free materials can be made to approach the properties of wheat powders.
Keywords : Water diffusion Thermodynamic properties Gluten-free powders Water holding Sorption isotherms Physicochemical properties
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Nohed Boucheham, Laurence Galet, Severine Patry, Mohammed Nasreddin Zidoune. Physicochemical and hydration properties of different cereal and legume gluten‐free powders. Food Science & Nutrition, 2019, 7 (9), pp.3081-3092. ⟨10.1002/fsn3.1170⟩. ⟨hal-02271399⟩

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