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The use of CP/MAS 13C-NMR for evaluating starch degradation in injection molded starch-plastic composites |
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| Authors: | S. H. Imam S. H. Gordon A. R. Thompson R. E. Harry-O'kuru R. V. Greene |
| Affiliation: | (1) Biopolymer Research Unit, and Analytical Chemistry Support, Agricultural Research Service, 61604 Peoria, Illinois, U.S.A.;(2) National Center for Agricultural Utilization Research. The United States Department of Agriculture, Agricultural Research Service, 61604 Peoria, Illinois, U.S.A. |
| Abstract: | Summary Cross-polarization/magic angle spinning (CP/MAS) 13C solid-state-NMR was utilized to evaluate the extent of hydrolysis and structure of starch in enzymatically digested injection molded starch-polyethylene-co-acrylic acid (EAA)-polyethylene (PE) plastic composites. It is a simple, quick and semi-quantitative method. Results are in agreement with reducing sugar assays routinely used for measuring starch degradation. |
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