Effect of Different Hydrothermal Treatments on Pasting, Textural, and Rheological Properties of Single and Dual Modified Corypha Umbraculifera L. Starch. (10th December 2021) - Navaf, Muhammed
Abstract: Starch isolated from Corypha umbraculifera L. (talipot palm), a non‐conventional source of starch, is modified by heat‐moisture treatment (HMT), annealing (ANN), autoclaving (AUT), and HMT followed by AUT (HMT‐AUT), and ANN followed by AUT (ANN‐AUT). The effect of single and dual treatments on physicochemical, structural, and functional properties of starch is studied. All treated samples showed an A‐type crystalline pattern, however, the relative crystallinity increased by treatments from 16.35±0.42% to 26.76±0.64%, and the highest relative crystallinity is observed for ANN starch. The swelling power and solubility significantly changed ( p ≤ 0.05) after modifications (S1 ). A higher pasting temperature and final viscosity are noticed in ANN‐AUT and AUT, respectively. However, all the treatments markedly decreased the breakdown viscosity. A higher gel hardness value of 112.58±1.2 N is observed in the HMT‐AUT starch sample. Abstract : Talipot palm is a new source of nonconventional stem pith starch and is treated with different physical methods. The modification of talipot palm starch with heat moisture treatment, annealing, autoclave treatment, and their combinations cause considerable changes in structural, pasting, textural, and rheological properties. This work helps to demonstrate the industrial utility of talipot palm starch.