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Compaction agglomeration of corn starch in presence of different binders

Dhanalakshmi, K. and Suvendu, Bhattacharya (2011) Compaction agglomeration of corn starch in presence of different binders. Journal of Food Engineering, 104. pp. 348-355.

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A model powder system comprising corn starch has been subjected to compaction agglomeration in presence of different binders like sugar (0–20%), pre-gelatinised starch (PGS) powder (0–20%) and vegetable oil (0–5%). The compacted masses are examined for density and different textural parameters (linear limit of deformation and modulus of deformability, and failure properties like failure stress/energy/ strain) employing uniaxial compression. An increase in sugar and PGS markedly increases the failure stress, energy for failure and modulus of deformability while showing a reverse trend for oil added samples. The strain at failure increases with the addition of PGS and oil (6.9–14.5 and 6.9–24.4%, respectively) whereas marginal effect (6.9–8.1%) occurs with sugar. Compacted mass having 20% PGS behaves as the toughest sample. Cluster analysis among the textural parameters indicates a high similarity of 85% between failure stress and energy for failure. A mechanism of failure has been proposed for compacted mass during compression that has been supported by microstructures.

Item Type: Article
Uncontrolled Keywords: Agglomeration, Compaction, Corn starch, Binder, Texture
Subjects: 600 Technology > 08 Food technology > 25 Sugar/Starch/Confectionery
600 Technology > 08 Food technology > 14 Physical properties > 05 Texture
Divisions: Food Engineering
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 15 Jun 2011 05:03
Last Modified: 25 Sep 2018 06:51
URI: http://ir.cftri.com/id/eprint/10106

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