PMID: 2095566Dec 1, 1990Paper

Amorphous-to-crystalline transformation of sucrose

Pharmaceutical Research
J T Carstensen, K Van Scoik

Abstract

The transformation of amorphous sugar in the form of lyophilized spheres into crystalline sucrose was studied. The lyophilisate, when exposed to moist atmospheres, picks up moisture to a constant weight. The amount of moisture addition is a function of relative humidity of the atmosphere and temperature. The loose "lyophilisate structure" collapses to form a denser amorphous phase ("hydrated amorphate"). After a lag time which varies with relative humidity of the atmosphere and temperature, the hydrated amorphate loses moisture (weight) and, in the process, forms crystalline sucrose. The phase nature of the hydrated amorphate is equivalent to an aqueous solution that is supersaturated with respect to crystalline sucrose. A model was developed for the lag time which accounts for the experimental results.

Citations

Mar 3, 2004·Chemical & Pharmaceutical Bulletin·Shinji OhmoriToshio Kashihara
Apr 10, 2016·Pharmaceutical Research·Anna-Kaisa KoskinenAnne M Juppo
Sep 21, 2020·Food Chemistry·Adrienne L VoelkerLisa J Mauer
Jul 13, 2020·International Journal of Pharmaceutics·Seema ThakralRaj Suryanarayanan
Mar 7, 2002·International Journal of Pharmaceutics·Pierre O SouillacJ Howard Rytting
Mar 21, 2002·Journal of Agricultural and Food Chemistry·Christophe CordellaLouisette Lizzani-Cuvelier

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