WATER ACTIVITY AND SOLUBILITY OF TREHALOSE

Authors
LAMMERT AM SCHMIDT SJ DAY GA
Citation
Am. Lammert et al., WATER ACTIVITY AND SOLUBILITY OF TREHALOSE, Food chemistry, 61(1-2), 1998, pp. 139-144
Citations number
29
Categorie Soggetti
Food Science & Tenology","Nutrition & Dietetics","Chemistry Applied
Journal title
Food chemistry → ACNP
ISSN journal
03088146
Volume
61
Issue
1-2
Year of publication
1998
Pages
139 - 144
Database
ISI
SICI code
0308-8146(1998)61:1-2<139:WAASOT>2.0.ZU;2-U
Abstract
The water activity, moisture sorption isotherm, and solubility of treh alose were determined. The water activity of a saturated solution of t rehalose, as measured by an electric hygrometer, was 0.98 and 0.97 at 20 and 25 degrees C, respectively. The water activity was also measure d by a Decagon water activity instrument and found to be 0.96 and 0.95 at 20 and 25 degrees C, respectively. The moisture sorption isotherm of trehalose at 20 degrees C was found to be a Type III isotherm. Treh alose solubility from 10-40 degrees C was determined using a two step method. The solubility of trehalose in water at 10, 20, 30, and 40 deg rees C was found to be 42.3, 46.6, 52.3 and 59.7% (g trehalose 100 g(- 1) solution), respectively. (C) 1998 Elsevier Science Ltd. All rights reserved.