Abstract
Waxy maize starch was chemically modified to varying benzylation levels and the degree of benzylation substitution was measured using a nuclear magnetic resonance (NMR) method. Fourier Transform (FT) Raman spectra of the chemically modified starches were acquired and aromatic C=C stretch Raman bands characteristic of the benzylation modification were used to derive a calibration curve for the Raman intensity of these marker bands versus the degree of benzylation substitution. The best-fit linear regression to the plotted data gave a linear correlation coefficient of 0.997. The FT-Raman technique provides a fast, nondestructive method for the measurement of the degree of benzylation substitution of modified waxy maize starches and should be applicable for use with benzylated starches from other botanical sources.
| Original language | English |
|---|---|
| Pages (from-to) | 629-631 |
| Number of pages | 3 |
| Journal | Cereal Chemistry |
| Volume | 78 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2001 |
| Externally published | Yes |