Rheological behavior at 60 °C, granule size distribution and Differential Scanning Calorimetry (DSC) tests were employed to study the effect of diverse reaction conditions: adipic acid concentration, pH and temperature during cross‐linking of banana (Musa paradisiaca) starch. These properties were determined in native banana starch pastes for the purpose of comparison. Rheological behavior from pastes of cross‐linked starch at 60 °C did not show hysteresis, probably due the cross‐linkage of starch that avoided disruption of granules, elsewhere, native starch showed hysteresis in a thixotropic loop. All pastes exhibited non‐Newtonian shear thinning behavior. In all cases, size distribution showed a decrease in the median diameter in cross‐linked starches. This condition produces a decrease in swelling capacity of cross‐linked starch. The median diameter decreased with an increase of acid adipic concentration; however, an increase of pH and Temperature produced an increase in this variable. Finally, an increase in gelatinization temperature and entalphy (ΔH) were observed as an effect of cross‐linkage. An increase in acid adipic concentration produced an increase in and a decrease in ΔH. pH and temperature. The cross‐linked of banana starch produced granules more resistant during the pasting procedure.
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7 July 2008
THE XV INTERNATIONAL CONGRESS ON RHEOLOGY: The Society of Rheology 80th Annual Meeting
3–8 August 2008
Monterey (California)
Research Article|
July 07 2008
Rheological Behavior, Granule Size Distribution and Differential Scanning Calorimetry of Cross‐Linked Banana (Musa paradisiaca) Starch.
María C. Núñez‐Santiago;
María C. Núñez‐Santiago
Centro de Desarrollo de Productos Bióticos—Instituto Politécnico Nacional. Km. 8.5 Carr. Yautepec‐Jojutla, Yautepec, Morelos CP. 62731, México
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Amira J. Maristany‐Cáceres;
Amira J. Maristany‐Cáceres
Centro de Desarrollo de Productos Bióticos—Instituto Politécnico Nacional. Km. 8.5 Carr. Yautepec‐Jojutla, Yautepec, Morelos CP. 62731, México
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Francisco J. García Suárez;
Francisco J. García Suárez
Centro de Desarrollo de Productos Bióticos—Instituto Politécnico Nacional. Km. 8.5 Carr. Yautepec‐Jojutla, Yautepec, Morelos CP. 62731, México
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Arturo Bello‐Pérez
Arturo Bello‐Pérez
Centro de Desarrollo de Productos Bióticos—Instituto Politécnico Nacional. Km. 8.5 Carr. Yautepec‐Jojutla, Yautepec, Morelos CP. 62731, México
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AIP Conf. Proc. 1027, 1256–1258 (2008)
Citation
María C. Núñez‐Santiago, Amira J. Maristany‐Cáceres, Francisco J. García Suárez, Arturo Bello‐Pérez; Rheological Behavior, Granule Size Distribution and Differential Scanning Calorimetry of Cross‐Linked Banana (Musa paradisiaca) Starch.. AIP Conf. Proc. 7 July 2008; 1027 (1): 1256–1258. https://doi.org/10.1063/1.2964535
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