HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Starch in rubbery and glassy states by FTIR spectroscopy

Abstract : The organization of various starch samples varying in molecular structure, organization and moisture content was studied by ATR-FTIR spectroscopy. The comparison of the infrared spectra showed that band intensities in the 1065-870 cm(-1) region can be explained by their mobility related to the glass transition, T-g, which occurs at room temperature in the 15-21% water content range. Spectra analyzed using principal component analysis showed main structure/moisture changes for the 1000/1022 cm(-1) intensity ratio. The helix organization at a short order range was weakly moisture dependant below T-g, whereas the signal became increasingly water dependant with the crystalline/amorphous ratio above T-g. This result is in agreement with the model of liquid crystal structure and mesophase variation: water allows the self-assembly of amylopectin helices leading to layered organized structure.
Document type :
Journal articles
Complete list of metadata

https://hal.inrae.fr/hal-02667004
Contributor : Migration Prodinra Connect in order to contact the contributor
Submitted on : Sunday, May 31, 2020 - 9:51:23 AM
Last modification on : Thursday, January 13, 2022 - 3:12:02 PM

Links full text

Identifiers

Collections

Citation

Isabelle Capron, Paul Robert, Paul Colonna, Maurice Brogly, Veronique Planchot. Starch in rubbery and glassy states by FTIR spectroscopy. Carbohydrate Polymers, Elsevier, 2007, 68, pp.249-259. ⟨10.1016/j.carbpol.2006.12.015⟩. ⟨hal-02667004⟩

Share

Metrics

Record views

4