Mobility of water in various sugar-water systems as studied by oxygen-17 NMR
Journal
Food Chemistry
Journal Volume
46
Journal Volume
46
Journal Issue
1
Journal Issue
1
Pages
55-60
Start Page
55
End Page
60
ISSN
03088146
Date Issued
1993
Author(s)
Schmidt, Shelly J.
Abstract
Proton decoupled oxygen-17 NMR transverse relaxation rates (R2, s-1) were used to measure the mobility of water in three sugar solutions, lactose (L), sucrose (S) and fructose (F), and their solution combinations, L : S, L : F and S:F, as a function of concentration and combination ratio (1:9, 1:1 and 9:1). The behavior of R2 as a function of concentration for the single sugar solutions was similar at low concentrations. However, at high sugar concentrations deviations for sucrose and fructose were observed. The R2 of the sugar solution combinations (L:S, L:F and S:F) at low concentrations was not influenced by sugar type or combination ratio, but only by the total concentration of the sugars present. A mass balance approach was used to predict the R2 of the sugar solution combinations; however only at low total sugar concentrations did the equation adequately predict the experimentally obtained R2 values.
SDGs
Type
journal article