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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.
Sobral P.J.A.
Kieckbusch T.G.
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.
Rights: fechado
Identifier DOI: 10.1007/s10973-005-7111-z
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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