Rheological, pasting, thermal and retrogradation properties of octenyl succinic anhydride modified potato starch
No hay miniatura disponible
Fecha
Título de la revista
ISSN de la revista
Título del volumen
Editor
Sociedade Brasileira de Ciência e Tecnologia de Alimentos
Resumen
Descripción
The objective of the present study was to investigate the rheological, pasting, and thermal properties of octenyl succinic anhydrate (DSA)-modified potato starch. Potato starch was modified using different concentrations of DSA (0, 1, 3, and 5%, v/v). The degree of substitution (DS) for the DSA-modified starch ranged from 0.0012 to 0.0055. The amylose leaching values of native and DSA-modified potato starch with different DS levels were in the range of 47.09-87.32%. The gel strength values of the DSA-modified starch were lower than those of native potato starch. Rapid Visco Analyzer data showed that peak, hot pasting, final and setback viscosities of the native starch decreased after DSA modification. Dynamic shear rheological tests, conducted at 4 °C, indicated that DSA-modified potato starch had weak gel-like behavior with the storage moduli (G’) higher than the loss moduli (G”) over most of the frequency ranges (0.63-63.8 rad·s -1 ).
Palabras clave
Agrociencias