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|Type:||Artigo de periódico|
|Title:||Water Sorption And Glass Transition Of Freeze-dried Camu-camu (myrciaria Dubia (h.b.k.) Mc Vaugh) Pulp|
|Author:||Da Silva M.A.|
|Abstract:||Differential scanning calorimetry (DSC) was used to determine phase transitions of freeze-dried camu-camu pulp in a wide range of moisture content. Samples were equilibrated at 25°C over saturated salt solutions in order to obtain water activities (a w) between 0.11-0.90. Samples with a w>0.90 were obtained by direct water addition. At the low and intermediate moisture content range, Gordon-Taylor model was able to predict the plasticizing effect of water. In samples, with a w>0.90, the glass transition curve exhibited a discontinuity and T g was practically constant (-58.8°C), representing the glass transition temperature of the maximally concentrated phase (T' g). © 2006 Akadémiai Kiadó.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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