Δευτέρα, 9 Ιανουαρίου 2017

Optimizing the effects of Persian gum and carrot pomace powder for development of low-fat donut with high fibre content

Publication date: Available online 10 January 2017
Source:Bioactive Carbohydrates and Dietary Fibre
Author(s): Mehran Nouri, Behzad Nasehi, Vahid Samavati, Saman Abdanan Mehdizadeh
The objective of present study was to develop and optimize a low-fat high fibre donut formulation using response surface methodology. A 5-level-3-factor central composite rotatable design was employed, where the independent variables were Persian gum (0–1.5g/100g), carrot pomace powder (0–15g/100g) and water (38–53g/100g), while the dependent variables were physicochemical properties of donuts. It was found that Persian gum and carrot pomace powder both effectively contributed to retention of donuts moisture content which in turn led to significant reduction of fat uptake during frying process (p < 0.05). Persian gum decreased the donuts firmness while carrot pomace powder adversely affected the textural properties as well as specific volume (p < 0.05). Image analysis revealed that carrot pomace powder influenced all the image analysis parameters investigated negatively. Response surface methodology described that donuts with optimum formulation of 1.20g/100gPersian gum, 6.45g/100gcarrot pomace powder and 48.16g/100g water had considerably lower fat uptake and acceptable sensory attributes compared to control sample.



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