Adsorption isotherm of amorphous trehalose

✍ Scribed by Iglesias, Héctor A; Chirife, Jorge; Buera, María P

• Book ID: 101223847
• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 238 KB
• Volume: 75
• Category: Article
• ISSN: 0022-5142
• DOI: 10.1002/(sici)1097-0010(199710)75:2<183::aid-jsfa860>3.0.co;2-t

✦ Synopsis

The water adsorption isotherm at 25¡C of freeze-dried amorphous trehalose and trehalose with the addition of maltodextrin (MD) DE 10.9 was obtained. Moisture uptake as a function of time at various relative humidities (RH) was also measured. At low relative humidities (RH) amorphous trehalose adsorbs moisture but at 44% RH and above the isotherm exhibits a plateau indicating crystallisation (formation of the dihydrate) of amorphous trehalose and this was reÑected on the shape of the isotherm. Trehalose crystallisation was delayed in the system containing maltodextrin (50 : 50) as compared with pure trehalose.