Abstract
Complete dissolution is needed for the separation, characterization, or homogeneous labeling of whole starch molecules. A method is presented to quantify the extent of starch dissolution in DMSO for the first time; it is validated on a commercial rice starch. It is used directly on starch dispersions containing possible undissolved or co-dissolved species. High-amylose maize starches, known to be digested slowly in vivo, only quantitatively dissolve in the presence of high concentrations of an H-bond disrupter, LiBr, although they form clear dispersions at low LiBr concentrations. Starch quantitatively dissolves from waxy rice flours; non-starch components partially co-dissolve but do not interfere with the dissolution quantification.
| Original language | English |
|---|---|
| Pages (from-to) | 506-514 |
| Number of pages | 9 |
| Journal | Macromolecular Bioscience |
| Volume | 9 |
| Issue number | 5 |
| Publication status | Published - 2009 |
Keywords
- digestion
- dimethyl sulfoxide
- gel permeation chromatography
- nuclear magnetic resonance
- solvation
- starch