Novel Method for Characterizing Short-Range Molecular Order in Noncrystalline Starch by 13 C CP/MAS NMR
Abstract
C CP/MAS NMR spectroscopic method was developed to provide the quantitative assessment of short-range molecular order in noncrystalline starches. Spectral components (i.e., subspectra) of ordered phases in noncrystalline starches were subtracted from the subspectra of amorphous starches that were calibrated by multiplying with a scale factor. After peak fitting of the subspectra of ordered phases of noncrystalline and amorphous starches, the band at 95 ppm in the C1 region was identified as a characteristic of short-range order in noncrystalline starches. The relative peak area (RPA) at 95 ppm was negatively correlated with water content and is thus proposed as a relatively quantitative metric for estimating the proportion of short-range order of noncrystalline starches. This newly developed method will help to better understand the structure-functionality of starchy materials.
Fields of Study & Subjects
Food composition and properties
NMR spectroscopy and applications
Advanced NMR Techniques and Applications
Publication details
- Journal / source
- Journal of Agricultural and Food Chemistry
- Publisher
- American Chemical Society (ACS)
- Volume
- 74
- Issue
- 3
- Pages
- 3146–3156
- Publication date
- 13 January 2026
- Language
- EN