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Rehydration behaviour and ageing of dairy powders assessed by calorimetric measurements

Abstract : On the basis of dissolution enthalpy measurements, the aims of this study were i) to investigate the feasibility of lassifying the dissolvability of various dairy powders, and ii) to establish whether a change in rehydration behaviour that occurs with ageing could be predicted. No clear correlations could be established between the exothermic or endothermic nature of the calorimetric response and the rehydration ability of the powders studied. Dissolution enthalpy cannot thus be considered an absolute parameter that could be used to classify one dairy powder among others. On the contrary, it is experimentally shown that dissolution enthalpy is very sensitive both to the composition and the physical state of the powder. Consequently, dissolution enthalpy value can be considered as a marker representative of the manufacturing process and storage conditions. Evidence is made that following dissolution enthalpy over time could be a way to detect changes in powders due to ageing.
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O. Syll, B. Richard, Jean-François Willart, Michel Descamps, P. Schuck, et al.. Rehydration behaviour and ageing of dairy powders assessed by calorimetric measurements. Innovative Food Science and Emerging Technologies, Elsevier, 2012, 14, pp.139-145. ⟨10.1016/j.ifset.2012.01.001⟩. ⟨hal-00924760⟩



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