Effect of structuring psyllium (Plantago ovata) husk emulsion gels by
ultrasound for the application in dysphasia food
Abstract
The aim of this paper was to investigate effects of inulin and
ultrasonic homogenization on particle size distribution and
microstructure of oil-in-water emulsion gels stabilized by psyllium husk
were investigated. The emulsion gel was assessed their utility in meat
puree prepared for people with dysphagia. The results showed that
increasing inulin percentage resulted in reduced particle size and
improved emulsion stability with the optimum at 20% w/w inclusion.
Ultrasonic homogenization further enhanced the emulsion stability by
reducing the size of emulsion droplet and improving encapsulation of
emulsion droplet. Increasing inulin concentrations in the emulsion gels
added into purees also corresponded with decreasing total expressible
fluid (TEF). The stability of puree against the action of
carbohydrate-hydrolyzing enzymes (α-amylase and α-glucosidase) was
improved with the addition of emulsion gels. Therefore, these developed
emulsion gels could be beneficial in formulating modified-texture food
prepare for people with dysphagia.