Research Article Open Access

Optimization of Egg Tofu Formulations Containing Carrageenan, Gum Arabic and Corn Starch by Descriptive Sensory Analysis

Maizura Murad1, Aminah Abdullah2 and Wan Aida Wan Mustapha2
  • 1 School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia
  • 2 School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

Abstract

The objectives of this study was to determine the effects of carrageenan, gum Arabic and corn starch on the sensory characteristics of egg tofu and to optimize egg tofu formulations using Response Surface Methodology (RSM). A Central Composite Design (CCD) with three factors was used to study the effects of carrageenan (0.1-0.2%), gum Arabic (0.1-1.0%) and corn starch (1.5-2.5%) on the sensory characteristics of egg tofu. Eight trained panelists performed quantitative descriptive analysis. Analysis of Variance (ANOVA) showed that several of the response variables (egg aroma, starchiness, cohesiveness, astringency and aftertaste) were significantly different (p<0.05) and that the coefficients of determination (R2) were in the range of 0.77-0.96. Based on the superimposed plot to determine the overlay region for sensory attributes, the formulation of egg tofu with desired sensory quality was obtained by incorporating 0.12% carrageenan, 0.61% gum Arabic and 2.00% corn starch. The best sensory performances were set as a goal for each response and the results showed that the optimum predicted response values obtained for egg aroma, starchiness, cohesiveness, astringency and aftertaste were 62, 88, 37, 34 and 60 mm respectively.

American Journal of Applied Sciences
Volume 12 No. 1, 2015, 47-57

DOI: https://doi.org/10.3844/ajassp.2015.47.57

Submitted On: 6 December 2014 Published On: 11 March 2015

How to Cite: Murad, M., Abdullah, A. & Mustapha, W. A. W. (2015). Optimization of Egg Tofu Formulations Containing Carrageenan, Gum Arabic and Corn Starch by Descriptive Sensory Analysis. American Journal of Applied Sciences, 12(1), 47-57. https://doi.org/10.3844/ajassp.2015.47.57

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Keywords

  • Egg Tofu
  • Descriptive Sensory Analysis
  • Optimization
  • Respond Surface Methodology (RSM)
  • Central Composite Design (CCD)