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  • Title: Concomitant dehydration mechanisms in single crystals of alpha,alpha-trehalose.
    Author: Dupray V, Berton B, Ossart S, Atmani H, Petit MN, Coquerel G.
    Journal: Carbohydr Res; 2009 Dec 14; 344(18):2539-46. PubMed ID: 19875105.
    Abstract:
    The dehydration behaviour of alpha,alpha-trehalose (alpha-D-glucopyranosyl alpha-D-glucopyranoside) dihydrate single crystals is investigated by thermomicroscopy, Raman microscopy, and differential scanning calorimetry. The results show at a given stage the simultaneous presence of two polymorphic forms, amorphous material, and movement of a fluid phase. The study also underlines that the characterization of the average phase by conventional XRPD and DSC techniques is not sufficient to describe the dehydration mechanisms of alpha,alpha-trehalose particles. Moreover, it confirms that the dehydration behaviour is mainly driven by heterogeneities and the rate of water loss.
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