Abstract
The magnetic relaxation times were determined at 32 °C by pulsed NMR on aqueous solutions of six kinds of sugar, i.e. glucose, galactose, fructose, maltose, sucrose and lactose, and the amounts of bound water were calculated. Above 1.0 gH2O/gDM of the water content, regardless of the kinds of sugar, the amount of bound water of these sugars was almost constant and was as low as 0.01 gH2O/gDM, which was remarkably lower than the value obtained on rice starch.
The amount of monolayer sorption water at 35°C was estimated as practical zero, independently of the kinds of sugar. Therefore, the amount of the bound water estimated from the magnetic relaxation times seemed to correspond virtually the monolayer sorption water.
