Volume 13, Issue 48 (7-2009)
jwss 2009, 13(48): 231-238 |
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Farahnaki A, Dehghn A, Mesbahi G, Majzobi M. Production of Gelatinized Wheat and Maize Starches by a Double Drum Drier and Their Use in the Formulation of Salad Dressing. jwss 2009; 13 (48) :231-238
URL: http://jstnar.iut.ac.ir/article-1-1002-en.html
URL: http://jstnar.iut.ac.ir/article-1-1002-en.html
, farahnak@shirazu.ac.ir
Abstract: (23139 Views)
Salad dressing is a semisolid emulsion and a colloidal system with high consumer demand. Food polysaccharides (e.g starch) are used in the formulation of salad dressing to improve its physical properties and sensory attributes. In this research, 10% mixture of wheat or maize starches were used to produce pregelatinized starches by a double drum drier, followed by milling and sieving. The pregelatinized starches (10%) were applied in the formulation of a salad dressing instead of native starch. Viscosity (at 25 and 35◦C), Hunter color parameters of the samples were evaluated and compared. Pregelatinized starches were more effective in increasing viscosity of the samples compared to corresponding native starches, and the effect of maize starch was greater than wheat starch. Significant differences were recorded in terms of color parameters of the samples. Pregelatinized starch caused higher L values (lighter samples) while the native starch samples were creamy-light yellow. In general, it can be concluded that the pregelatinized starches had better functional properties in salad dressing compared to native starches, and the produced pregelatinized starches can be used instead of native starch in the formulation of salad dressing.
Keywords: Gelatinized wheat starch, Gelatinized maize starch, Salad dressing, Viscosity, Rheology, Colorimetery
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