Optimization of a spray drying process for flaxseed gum
2001
Oomah, B.D. | Mazza, G.
Spray drying of flaxseed gum optimized using response surface methodology (RSM). Water seed ratio (7-20), feed temperature (25-100 degrees C) and outlet temperature (60-110 degrees C) were the factors investigated with respect to yield, rheological characteristics (apparent viscosity, dynamic viscosity, storage G' and loss G" moduli), colour and cyanogenic glycoside contents of the spray-dried flaxseed gum. Optimization of the spray drying process was performed to achieve maximum yield and functionality (rheological properties) of flaxseed gum. Water:seed ratio and outlet temperature were the two major factors affecting the response variables of the gum. The highest yield of spray dried flaxseed gum was obtained at a water:seed ratio of approximately 18 L kg-1. Optimization for high yield led to the production of gums with low viscosities. Maximum stationary points for gum yield and minimum stationary point for rheological characteristics were observed at relatively high water:seed ratio (approximately 18), combined with moderate inlet feed temperature (61.7 degrees C) and high outlet temperature (92 degrees C).
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