Abstract
The mobility of water in corn starch suspensions and high‐moisture powders (10 to 70% corn starch) was investigated by Nuclear Magnetic Resonance (NMR) spectroscopy, in water and deuterium oxide. Both oxygen‐17 (17O) and deuterium (2H) nuclei were probed with a single pulse. The standard isotropic two‐state model with fast exchange was used to interpret these data by means of a physical model (I) and a chemical activity model (II). According to I plots of relaxation rate against concentration indicated three regions of decreasing water mobility. According to II, the relaxation rate was linear with chemical activity over the entire concentration range. The correlation time calculated for the bound water showed high mobility.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 79-83 |
| Number of pages | 5 |
| Journal | Starch ‐ Stärke |
| Volume | 39 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1987 |
ASJC Scopus subject areas
- Food Science
- Organic Chemistry