Artigo
Prediction of cassava starch edible film properties by chemometric analysis of infrared spectra
Fecha
2005-01-01Registro en:
Spectroscopy Letters. Philadelphia: Taylor & Francis Inc., v. 38, n. 6, p. 749-767, 2005.
0038-7010
10.1080/00387010500316080
WOS:000234818600007
Autor
Univ Aix Marseille 3
Universidade Estadual Paulista (Unesp)
Univ Catolica Dom Bosco
Universidade de São Paulo (USP)
Resumen
Cassava starch has been shown to make transparent and colorless flexible films without any previous chemical treatment. The functional properties of edible films are influenced by starch properties, including chain conformation, molecular bonding, crystallinity, and water content. Fourier-transform infrared (FTIR) spectroscopy in combination with attenuated total reflectance (ATR) has been applied for the elucidation of the structure and conformation of carbohydrates. This technique associated with chemometric data processing could indicate the relationship between the structural parameters and the functional properties of cassava starch-based edible films. Successful prediction of the functional properties values of the starch-based films was achieved by partial least squares regression data. The results showed that presence of the hydroxyl group on carbon 6 of the cyclic part of glucose is directly correlated with the functional properties of cassava starch films.