Optimization of the production of acetylated distarch adipates using the novel software ‘MULTIPLEX’

Abstract

Acetylated, cross‐linked and pregelatinized cassava starches were produced in a single‐screw extruder with different moisture contents (180, 220 and 260 g kg–1), reagent (adipic acetic mixed anhydride) concentrations (4, 11 and 18 g kg–1) and screw speeds (100, 130 and 160 r.p.m.). The acetylation, cross‐linking and pregelatinization increased cold viscosity (CV), water absorption index (WAI) and gel hardness, it also reduced gel cohesiveness, paste clarity and retrogradation of the modified‐starches compared with control samples (CSs). A novel microcomputer program called MULTIPLEX was developed for the optimization of the process. The optimization process maximized CV, WAI, gel hardness and paste clarity, and minimized gel cohesiveness and retrogradation of the modified‐starches. The optimum conditions were moisture of 240 g kg–1, reagent concentration of 4 g kg–1 and screw speed of 100 r.p.m. Experimentally determined values for all responses found in products processed under the optimum conditions were very close to the predicted values and this confirmed the validity of predicted models.

Literature Data Compilation of WAI and WSI of Extrudate Food Products

“…2006 [51] G T S N E N E Lazou, A. et al 2009 [52] T T S E E E E Liceti, A.E. et al 1995 [53] T S S E E Lin, Y.-H. et al 2003 [54] T T S E E E E Lue, S. et al 1994 [55] T T S E E Mali, S. et al 2001 [56] T S S E E E E Mali, S. et al 2001 [57] T S S E E Martinez-Bustos, F. et al…”

FAME Storage Time in an Optimized Natural Antioxidant Mixture

“…e coefficient of determination ( 2 ) was greater than 0.99 indicating low dispersion of the experimental data. e model was signi�cant at the level of 5% (Table 5) and the lack of �t was not signi�cant (10.39%), indicating that the model can be considered suitable for prediction purposes [43].…”

Cytocompatibility of a matrix of methylated cassava starch and chitosan

“…1,2 Thus, modified starches are used in a wide array of industrial applications. 4,6,8,27 The chemical modification of interest in the present work was methylation. Starch is easily modified using iodide methyl or dimethyl sulfate (DMSO 4 ), and, when dried, it forms rigid, plastic-like films.…”